Program Information

	Therapy General Poster Discussion	Sunday - 7/31/2016
		3:00 PM - 6:00 PM	Room: Exhibit Hall

3:00 PM - 6:00 PM Sunday

SU-F-T-1 : Optimization of the Accelerated Partial Breast Brachytherapy Fractionation with Consideration of Physical Doses to Tumor and Organ at Risk W. Fu*, M. Huq

3:00 PM - 6:00 PM Sunday

SU-F-T-2 : Estimation of Radiobiological Doses (BED and EQD2) of Single Fraction Electronic Brachytherapy That Equivalent to I-125 Eye Plaque: By Using Linear-Quadratic and Universal Survival Curve Models Y. Kim*, T. Waldron, E. Pennington

3:00 PM - 6:00 PM Sunday

SU-F-T-3 : Radiobiological Evaluation of a Directional Brachytherapy Device Surgically Implanted Following EBRT M. Rivard*, J. Emrich, J. Poli

3:00 PM - 6:00 PM Sunday

SU-F-T-5 : Dosimetric Evaluation and Validation of Newlydeveloped Well Chamber for Use in the Calibration of Brachytherapy Sources S. Saminathan*, H. Godson, R. Ponmalar, R. Manickam, J. Mazarello

3:00 PM - 6:00 PM Sunday

SU-F-T-6 : Development of a Formalism for Practical Dose Measurements in Brachytherapy in the German Standard DIN 6803 F. Hensley*, N. Chofor, A. Schonfeld, D. Harder

3:00 PM - 6:00 PM Sunday

SU-F-T-7 : Dosimetric Impact of the Dwell Position Inaccuracy in HDR Ring and Tandem Treatments with VarisourceIX Afterloader I. Veltchev*, R. Price, P. Anderson, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-8 : Brachytherapy Film Dosimetry in a Water Phantom for a Ring and Tandem HDR Applicator B. Lee*, Z. Grelewicz, Z. Kang, D. Cutright, M. Gopalakrishnan, V. Sathiaseelan, H. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-9 : In Phantom Full-Implant Validation of Plastic Scintillation Detectors for in Vivo Dosimetry During Low Dose Rate Brachytherapy F. Therriault-Proulx*, L. Beaulieu, T. Bruno, S. Beddar

3:00 PM - 6:00 PM Sunday

SU-F-T-10 : Validation of ELP Dosimetry Using PRESAGE Dosimeter: Feasibility Test and Practical Considerations K. Lambson*, K. Lafata, J. Schaal, D. Miles, S. Yoon, W. Liu, M. Oldham, J. Cai

3:00 PM - 6:00 PM Sunday

SU-F-T-11 : Scintillator Based Quality Assurance Device for HDR Brachytherapy G. Jozsef*

3:00 PM - 6:00 PM Sunday

SU-F-T-12 : Monte Carlo Dosimetry of the 60Co Bebig High Dose Rate Source for Brachytherapy L. Campos*, C. de Almeida

3:00 PM - 6:00 PM Sunday

SU-F-T-13 : Transit Dose Comparisons for Co-60 and Ir-192 HDR Sources V. Gimenez-Alventosa, J. Vijande*, F. Ballester, J. Perez-Calatayud

3:00 PM - 6:00 PM Sunday

SU-F-T-14 : Dosimetric Impacts of Various Uncertainties in Cervical Cancer HDR Brachytherapy: Are Conventional Point Doses Good Surrogates for 3D Dosimetry? X. Liang*, D. Zheng, X. Zhang, G. Narayanasamy, S. Morrill, J. Penagaricano, N. Paudel, Z. Li

3:00 PM - 6:00 PM Sunday

SU-F-T-15 : Evaluation of 192Ir, 60Co and 169Yb Sources for High Dose Rate Prostate Brachytherapy Inverse Planning Using An Interior Point Constraint Generation Algorithm E. Mok Tsze Chung*, H. Safigholi, A. Nicolae, M. Davidson, A. Ravi, D. Aleman, W. Song

3:00 PM - 6:00 PM Sunday

SU-F-T-16 : Experimental Determination of Ionization Chamber Correction Factors for In-Phantom Measurements of Reference Air Kerma Rate and Absorbed Water Dose Rate of Brachytherapy 192Ir Source M. Chan*, G. Law, V. Lee, M. Wong, R. Leung, K. Lee, S. Tung

3:00 PM - 6:00 PM Sunday

SU-F-T-17 : A Feasibility Study for the Transit Dosimetry with a Glass Dosimeter in Brachytherapy S. Moon*, M. Yoon, W. Chung, M. Chung, D. Kim

3:00 PM - 6:00 PM Sunday

SU-F-T-18 : The Importance of Immobilization Devices in Brachytherapy Treatments of Vaginal Cuff M. Shojaei*, N. Dumitru, S. Pella, A. Bacala

3:00 PM - 6:00 PM Sunday

SU-F-T-19 : The Consistency Dosimetric Analysis of the Accelerated Breast Brachytherapy J. Pinder*, S. Chandrasekara, S. Pella, A. Bacala

3:00 PM - 6:00 PM Sunday

SU-F-T-20 : Novel Catheter Lumen Recognition Algorithm for Rapid Digitization J. Dise*, J. Dise, D. McDonald, M. Ashenafi, J. Peng, C. Mart, N. Koch, K. Vanek

3:00 PM - 6:00 PM Sunday

SU-F-T-21 : A Novel Beam-Light View, Collimating Applicator for HDR Ocular Conjunctiva Brachytherapy-Treatments S. Koren*, J. Kindler, A. Guemnie Tafo, G. Cohen, E. Reich

3:00 PM - 6:00 PM Sunday

SU-F-T-22 : Clinical Implications When Using TG-186 (ACE) Heterogeneity Software A. Likhacheva, E. Grade, A. Sadeghi, T. Sokolowski*

3:00 PM - 6:00 PM Sunday

SU-F-T-23 : Correspondence Factor Correction Coefficient for Commissioning of Leipzig and Valencia Applicators with the Standard Imaging IVB 1000 J. Donaghue*, S. Gajdos

3:00 PM - 6:00 PM Sunday

SU-F-T-24 : Impact of Source Position and Dose Distribution Due to Curvature of HDR Transfer Tubes A. Khan*, N. Yue

3:00 PM - 6:00 PM Sunday

SU-F-T-25 : Design and Implementation of a Multi-Purpose Applicator for Pelvic Brachytherapy Applications J. Bogue*, E. Parsai

3:00 PM - 6:00 PM Sunday

SU-F-T-26 : A Study of the Consistency of Brachytherapy Treatments for Vaginal Cuff M. Shojaei, S. Pella, N. Dumitru*, A. Bacala

3:00 PM - 6:00 PM Sunday

SU-F-T-27 : A Comparative Case Study Among Four Modalities for the Superficial Treatment of Squamous Cell Carcinoma M. Ashenafi*, N. Koch, J. Peng, L. Terwillinger, J. Wilder, D. McDonald, C. Mart, J. Jenrette, K. Vanek

3:00 PM - 6:00 PM Sunday

SU-F-T-28 : Evaluation of BEBIG HDR Co-60 After-Loading System for Skin Cancer Treatment Using Conical Surface Applicator H. Safigholi*, A. Meigooni, D. Han, A. Soliman, W. Song

3:00 PM - 6:00 PM Sunday

SU-F-T-29 : The Important of Each Fraction Image-Guided Planning for Postoperative HDR-Brachytherapy in Endometrial Carcinoma D. Piriyasang*, P. Pattaranutaporn, K. Manokhoon

3:00 PM - 6:00 PM Sunday

SU-F-T-30 : Comprehensive Dosimetric Characterization of the Novel Direction Modulation Brachytherapy (DMBT) Tandem Applicator Using Monte Carlo Simulations H. Safigholi*, D. Han, S. Mashouf, A. Soliman, A. Owrangi, W. Song

3:00 PM - 6:00 PM Sunday

SU-F-T-31 : Shape and Isodose Distributions in Co60 HDR Brachytherapy for Different Utero-Vaginal Time Ratios G. Gonzalez-Sprinberg*, G. Piriz

3:00 PM - 6:00 PM Sunday

SU-F-T-32 : Evaluation of the Performance of a Multiple-Array-Diode Detector for Quality Assurance Tests in High-Dose-Rate Brachytherapy with Ir-192 Source K. Harpool*, T. De La Fuente Herman, S. Ahmad, I. Ali

3:00 PM - 6:00 PM Sunday

SU-F-T-33 : Air-Kerma Strength and Dose Rate Constant by the Full Monte Carlo Simulations S. Tsuji*, M. Oita, N. Narihiro

3:00 PM - 6:00 PM Sunday

SU-F-T-34 : Transition Form CT-Based to Ultrasound-Based HDR Treatment Planning for Prostate Cancer I. Veltchev*, R. Price, E. Horwitz, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-35 : Optimization of Bladder and Rectal Doses Using a Multi-Lumen Intracavitary Applicator for Gynecological Brachytherapy S. Laoui*, S. Dietrich, V. Sehgal, M. Al-Ghazi

3:00 PM - 6:00 PM Sunday

SU-F-T-36 : Dosimetric Comparison of Point Based Vs. Target Based Prescription for Intracavitary Brachytherapy in Cancer of the Cervix M. Ashenafi*, D. McDonald, J. Peng, C. Mart, N. Koch, L. Cooper, K. Vanek

3:00 PM - 6:00 PM Sunday

SU-F-T-37 : Dosimetric Evaluation of Planned Versus Decay Corrected Treatment Plans for the Treatment of Tandem-Based Cervical HDR Brachytherapy M. Goyal*, J. Manjhi, T. Kehwar, D. Rai, J. Barker, B. Heintz, K. Shide

3:00 PM - 6:00 PM Sunday

SU-F-T-38 : How Much Dose Is Given in MR Guided Cervical Cancer Brachytherapy with the Ring and Tandem Applicators? H. Zhang*

3:00 PM - 6:00 PM Sunday

SU-F-T-39 : Comparing Nomograms for Ordering of Palladium-103 Seeds for Dynamic Intraoperative Prostate Seed Implantation P. Taylor*, L. Wang, A. Riegel

3:00 PM - 6:00 PM Sunday

SU-F-T-40 : Can CBCT Images Be Used for Volume Studies of Prostate Seed Implants for Boost Treatment? H. Xu*, S. Lee, T. Diwanji, P. Amin, K. Krudys, M. Guerrero

3:00 PM - 6:00 PM Sunday

SU-F-T-41 : 3D MTP-TRUS for Prostate Implant P. Yan*

3:00 PM - 6:00 PM Sunday

SU-F-T-42 : MRI and TRUS Image Fusion as a Mode of Generating More Accurate Prostate Contours M. Petronek*, A. Purysko, S. Balik, J. Ciezki, E. Klein, D. Wilkinson

3:00 PM - 6:00 PM Sunday

SU-F-T-43 : Prediction of Dose Increments by Brain Metastases Resection Cavity Shrinkage Model with I-125 and Cs-131 LDR Seed Implantations D. Han*, S. Braunstein, P. Sneed, M. McDermott, L. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-44 : A Comparison of the Pre-Plan, Intra-Operative Plan, and Post-Implant Dosimetry for a Prostate Implant Case Using Prefabricated Linear Polymer-Encapsulated Pd-103 R. Sheu*, A. Powers, H. McGee, R. Stock, Y. Lo

3:00 PM - 6:00 PM Sunday

SU-F-T-45 : Dosimetric Effects of Saline Filled Balloons During IORT Using Xoft Electronic Brachytherapy G. Redler, A. Templeton, J. Turian, J. Chu, D. Bernard, H. Zhen, Y. Liao*

3:00 PM - 6:00 PM Sunday

SU-F-T-46 : The Effect of Inter-Seed Attenuation and Tissue Composition in Prostate 125I Brachytherapy Dose Calculations K. Tamura*, F. Araki, T. Ohno

3:00 PM - 6:00 PM Sunday

SU-F-T-47 : MRI T2 Exclusive Based Planning Using the Endocavitary/interstitial Gynecological Benidorm Applicator: A Proposed TPS Library and Preplan Efficient Methodology J. Richart*, A. Otal, S. Rodriguez, M. Santos, J. Perez-Calatayud

3:00 PM - 6:00 PM Sunday

SU-F-T-48 : Clinical Implementation of Brachytherapy Planning System for COMS Eye Plaques C. Ferreira*, M. Islam, S. Ahmad, T. De La Fuente Herman

3:00 PM - 6:00 PM Sunday

SU-F-T-49 : Dosimetry Parameters and TPS Commissioning for the CivaSheet Directional Pd-103 Brachytherapy Source M. Rivard*

3:00 PM - 6:00 PM Sunday

SU-F-T-50 : Evaluation of Monte Carlo Simulations Performance for Pediatric Brachytherapy Dosimetry C. Chatzipapas*, P. Papadimitroulas, G. Loudos, N. Papanikolaou, G. Kagadis

3:00 PM - 6:00 PM Sunday

SU-F-T-51 : Investigating the Effect of Eye Size and Eccentricity On Normal Tissue Doses From Eye Plaque Brachytherapy E. Polsdofer*, R. Crilly

3:00 PM - 6:00 PM Sunday

SU-F-T-52 : Study of Energy Dependent Effect of Dosimetry Systems Used in Therapeutic Soft X-Ray Energy Range S. Souri*, X. Qian, G. Gill, A. Jamshidi, Y. Cao, Y. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-53 : Treatment Planning with Inhomogeneity Correction for Intraoperative Radiotherapy Using KV X-Ray Beams Y. Chen*, M. Ghaly, S. Souri, L. Wang, F. Diaz, Y. Cao, E. Klein, A. Jamshidi

3:00 PM - 6:00 PM Sunday

SU-F-T-54 : Determination of the AAPM TG-43 Brachytherapy Dosimetry Parameters for A New Titanium-Encapsulated Yb-169 Source by Monte Carlo Calculations F. Reynoso*, J. Munro, S. Cho

3:00 PM - 6:00 PM Sunday

SU-F-T-55 : Reproducibility of Interstitial HDR Brachytherapy Plans S. Lee*, R. Ellis, B. Traughber, T. Podder

3:00 PM - 6:00 PM Sunday

SU-F-T-56 : Dosimetric Characterization of the INTRABEAM 50 KV X-Ray System with a Needle Applicator in Heterogeneous Tissues Y. Chen*, S. Souri, X. Qian, L. Wang, M. Ghaly, Y. Cao, A. Jamshidi

3:00 PM - 6:00 PM Sunday

SU-F-T-57 : Delivered Activity Accuracy of Radium 223 Dichloride Injections, When Being Administrated for Castration Resistant Prostate Cancer, Symptomatic Bone Metastases. The Impact of Residual Activity in the Spent Syringe and Dispensing Accuracy of Ra 223 G. Jennings*

3:00 PM - 6:00 PM Sunday

SU-F-T-58 : Dosimetric Evaluation of Breast Tissue Composition for Electronic Brachytherapy (BET) Source In High Dose Rate Accelerated Partial Breast (APBI) Irradiation W. Taylor*, D. Johnson, S. Ahmad, Y. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-59 : The Effect of Radiotherapy Dose On Immunoadjuvants M. Moreau*, S. Yasmin-Karim, Y. Hao, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-60 : A Quick Dose Calculation Check for Accuboost Breast Treatment A. Sen*

3:00 PM - 6:00 PM Sunday

SU-F-T-61 : Treatment Planning Observations for the CivaSheet Directional Brachytherapy Device Using VariSeed 9.0 M. Rivard*, D. Rothley

3:00 PM - 6:00 PM Sunday

SU-F-T-62 : Three-Dimensional Dosimetric Gamma Analysis for Impacts of Tissue Inhomogeneity Using Monte Carlo Simulation in Intracavitary Brachytheray for Cervix Carcinoma T. Thi Thao Nguyen*, H. Arimura, Y. Oku, T. Nakamoto, Y. Shibayama, T. Yoshiura

3:00 PM - 6:00 PM Sunday

SU-F-T-63 : Dosimetric Relevance of the Valencia and Leipzig HDR Applicators Plastic Cap D. Granero*, C. Candela-Juan, J. Vijande, F. Ballester, J. Perez-Calatayud, D. Jacob, F. Mourtada

3:00 PM - 6:00 PM Sunday

SU-F-T-64 : An Alternative Approach to Determining the Reference Air-Kerma Rate From Extrapolation Chamber Measurements T. Schneider*

3:00 PM - 6:00 PM Sunday

SU-F-T-65 : AutomaticTreatment Planning for High-Dose Rate (HDR) Brachytherapy with a VaginalCylinder Applicator Y. Zhou*, J. Tan, S. Jiang, K. Albuquerque, X. Jia

3:00 PM - 6:00 PM Sunday

SU-F-T-66 : Characteristics of Electron Beams From Varian Trubeam A. Dimofte*, C. Kennedy, T. Zhu

3:00 PM - 6:00 PM Sunday

SU-F-T-67 : Correction Factors for Monitor Unit Verification of Clinical Electron Beams J. Haywood*

3:00 PM - 6:00 PM Sunday

SU-F-T-68 : Characterizes of Microdetectors in Electron Beam Dosimetry I. Das*, A. Andersen, Y. Akino

3:00 PM - 6:00 PM Sunday

SU-F-T-69 : Correction Model of NIPAM Gel and Presage for Electron and Proton PDD Measurement C. Lin*, T. Chao, C. Lin, H. Nien, P. Tu, C. Wu, C. Yueh

3:00 PM - 6:00 PM Sunday

SU-F-T-70 : A High Dose Rate Total Skin Electron Irradiation Technique with A Specific Inter-Film Variation Correction Method for Very Large Electron Beam Fields X. Yang, J. Rosenfield, X. Dong, E. Elder, A. Dhabaan*

3:00 PM - 6:00 PM Sunday

SU-F-T-71 : A Practical Method for Evaluation of Electron Virtual Source Position Z. Huang*, W. Jiang, B. Stuart, S. Leu, T. Liu, Y. Feng

3:00 PM - 6:00 PM Sunday

SU-F-T-72 : Experimental Determination of the Positionuncertainties for ROOS Ionization Chambers in Clinical Electron Beams P. von Voigts-Rhetz*, T. Pretzsch, D. Czarnecki, H. Vorwerk, K. Zink

3:00 PM - 6:00 PM Sunday

SU-F-T-73 : Experimental Determination of the Effective Point of Measurement in Electron Beams Using a Commercial Scintillation Detector E. Simiele*, B. Smith, W. Culberson

3:00 PM - 6:00 PM Sunday

SU-F-T-74 : Experimental Validation of Monaco Electron Monte Carlo Dose Calculation for Small Fields . Varadhan*, S. Way, L. Arentsen, B. Gerbi

3:00 PM - 6:00 PM Sunday

SU-F-T-75 : Dosimetry Considerations in the Use of Hanging-Eye Block for Lesions of the Conjunctiva Z. Grelewicz*, B. Lee, D. Cutright, Z. Kang, M. Gopalakrishnan, V. Sathiaseelan, H. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-76 : Total Skin Electron Therapy: An-End-To-End Examination of the Absolute Dosimetry with a Rando Phantom G. Cui*, J. Ha, S. Zhou, J. Cui, A. Shiu

3:00 PM - 6:00 PM Sunday

SU-F-T-77 : A Novel Test for Coincidence Between Light Fields and Electron Radiation Fields G. Gibbard*, C. Shang, S. Khanal

3:00 PM - 6:00 PM Sunday

SU-F-T-78 : Minimum Data Set of Measurements for TG 71 Based Electron Monitor-Unit Calculations H. Xu*, M. Guerrero, K. Prado, B. Yi

3:00 PM - 6:00 PM Sunday

SU-F-T-79 : Monte Carlo Investigation of Optimizing Parameters for Modulated Electron Arc Therapy E. Al Ashkar*, A. Eldib, K. Eraba, M. Imam, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-80 : A Mobile Application for Intra-Operative Electron Radiotherapy Treatment Planning C. Williams*, E. Crowley, J. Wolfgang

3:00 PM - 6:00 PM Sunday

SU-F-T-81 : Treating Nose Skin Using Energy and Intensity Modulated Electron Beams with Monte Carlo Based Dose Calculation L. Jin*, J. Fan, A. Eldib, R. Price, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-82 : Dosimetric Evaluation of a Shield Used for Hemi-Body Skin Electron Irradiation C. Rivers, I. AlDahlawi*, I. Wang, A. Singh, M. Podgorsak

3:00 PM - 6:00 PM Sunday

SU-F-T-83 : Infant Total Skin Electron Therapy Using Five Fields Technique H. Saleh*, T. Howlin, V. Massey

3:00 PM - 6:00 PM Sunday

SU-F-T-84 : Measurement and Monte-Carlo Simulation of Electron Phase Spaces Using a Wide Angle Magnetic Electron Spectrometer F. Englbrecht*, F. Lindner, J. Bin, A. Wislsperger, M. Reiner, F. Kamp, C. Belka, G. Dedes, J. Schreiber, K. Parodi

3:00 PM - 6:00 PM Sunday

SU-F-T-85 : Energy Modulated Electron Postmastectomy Unreconstructed (PU) Chest Wall (CW) Irradiation Technique to Achieve Heart Sparing L. Hong*, A. Ballangrud, B. McCormick, J. Mechalakos

3:00 PM - 6:00 PM Sunday

SU-F-T-86 : Electron Dosimetric Effects of Bolus and Lens Shielding in Treating Superficial Eye Lesions L. Young, L. Wootton*, O. Gopan, J. Liao

3:00 PM - 6:00 PM Sunday

SU-F-T-87 : Comparison of Advanced Radiotherapy Techniques for Post-Mastectomy Breast Cancer Patients D. Heins*, R. Zhang, K. Hogstrom, M. Sanders

3:00 PM - 6:00 PM Sunday

SU-F-T-88 : Field's Metal for Electron Beam Inserts and Blocks J. Ha*, A. Gallogly, J. Cui, R. Jennelle

3:00 PM - 6:00 PM Sunday

SU-F-T-89 : Investigation of Simultaneous Optimization of Photon and Electron Apertures for Mixed Beam Radiotherapy Based On An Academic Case S. Mueller*, A. Joosten, M. Fix, D. Henzen, W. Volken, D. Frei, M. Stampanoni, P. Manser

3:00 PM - 6:00 PM Sunday

SU-F-T-90 : Patterns of Electron IORT Treatments in the U.S., Europe and Asia S. Adamczyk*, D. Goer, R. Ash

3:00 PM - 6:00 PM Sunday

SU-F-T-91 : Development of Real Time Abdominal Compression Force (ACF) Monitoring System T. Kim*, S. Kim, D. Kim, S. Kang, M. Cho, K. Kim, D. Shin, Y. Noh, T. Suh

3:00 PM - 6:00 PM Sunday

SU-F-T-92 : Clinical Benefit for Breast and Chest Wall Setup in Using a Breast Board S. Li*, C. Miyamoto, D. Serratore, Q. Liang, E. Dziemianowicz

3:00 PM - 6:00 PM Sunday

SU-F-T-93 : Breast Surface Dose Enhancement Using a Clinical Prone Breast Board M. Guerra*, G. Jozsef

3:00 PM - 6:00 PM Sunday

SU-F-T-94 : Plan2pdf - a Software Tool for Automatic Plan Report for Philips Pinnacle TPS C. Wu*

3:00 PM - 6:00 PM Sunday

SU-F-T-95 : An Automatic Data Verification Method During An Eclipse/Aria Version Upgrade Using Cryptographic Secure Hash Algorithm Z. Xu*, J. Baker, S. Ryu

3:00 PM - 6:00 PM Sunday

SU-F-T-96 : A New Paradigm of Weekly Chart Checking for Radiation Therapy Clinics J. Tan*, A. Pompos, S. Jiang, Y. Yan

3:00 PM - 6:00 PM Sunday

SU-F-T-97 : Outlier Identification in Radiation Therapy Knowledge Modeling Y. Sheng*, Y. Ge, L. Yuan, T. Li, F. Yin, Q. Wu

3:00 PM - 6:00 PM Sunday

SU-F-T-98 : Knowledge Modeling for The Outcome of Brain Stereotactic Radiosurgery Q. Wu, J. Hauck*, L. Yuan, J. Kirkpatrick

3:00 PM - 6:00 PM Sunday

SU-F-T-99 : Data Visualization From a Treatment Planning Tracking System for Radiation Oncology K. Cline*, C. Kabat, Y. Li, C. Ha, N. Kirby, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-100 : Development and Implementation of a Treatment Planning Tracking System Into the Radiation Oncology Clinic C. Kabat*, K. Cline, Y. Li, C. Ha, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-101 : Insight Into Dosimetry Workload and Planning Timelines: A 6 Year Review at One Institution R. Cardan*, R. Popple, H. Smith, J. Fiveash

3:00 PM - 6:00 PM Sunday

SU-F-T-102 : Automatic Curation for a Scalable Registry Using Machine Learning D. Ruan*, W. Shao, J. wong, D. Veruttipong, M. Steinberg, D. Low, P. Kupelian

3:00 PM - 6:00 PM Sunday

SU-F-T-103 : Analysis of Hepatitis B Virus Reactivation After Conformal Radiotherapy in Patients with Hepatocellular Carcinoma Using the Lyman NTCP Model Z. Li, W. Huang, H. Li, B. Li*

3:00 PM - 6:00 PM Sunday

SU-F-T-104 : Determining the NTCP Parameters of Pharyngeal Constrictors and Proximal Esophagus for Radiation Induced Swallowing Problems Recorded Six Months After Radiation Therapy for Head and Neck Tumors P. Mavroidis*, A. Price, M. Kostich, R. Amdur, W. Mendenhall, N. Sheets, R. Green, S. Das, L. Marks, B. Chera

3:00 PM - 6:00 PM Sunday

SU-F-T-105 : The Predicted Radiation Response of Non-Small Cell Lung Cancer for SRS, SBRT and HDR Brachytherapy Z. Huang*, Y. Feng, S. Lo, T. Williams, J. Grecula, N. Mayr, W. Yuh

3:00 PM - 6:00 PM Sunday

SU-F-T-106 : A Dosimetric Study of Intensity Modulated Radiation Therapy to Decrease Radiation Dose to the Thoracic Vertebral Bodies in Patients Receiving Concurrent Chemoradiation for Lung Cancer D. DiCostanzo*, C. Barney, J. Bazan

3:00 PM - 6:00 PM Sunday

SU-F-T-107 : Correlations Between Dosimetric Indices of Pharyngeal Constrictors and Proximal Esophagus with Associated Patient-Reported Outcomes Six Months After Radiation Therapy for Head and Neck Cancer B. Chera, A. Price*, M. Kostich, R. Amdur, W. Mendenhall, N. Sheets, R. Green, L. Marks, S. Das, P. Mavroidis

3:00 PM - 6:00 PM Sunday

SU-F-T-108 : Texture Analysis for Toxicity Prediction From Dose Surface Maps A. Witztum*, S. Warren, M. Partridge, M. Hawkins

3:00 PM - 6:00 PM Sunday

SU-F-T-109 : A Shortcoming of the Fisher-Kolmogorov Reaction-Diffusion Equation for Modeling Tumor Growth E. Dahlman, Y. Watanabe*

3:00 PM - 6:00 PM Sunday

SU-F-T-110 : LKB Modeling of Acute Hematologic Toxicity in Rectal Cancer H. Deng*

3:00 PM - 6:00 PM Sunday

SU-F-T-111 : Investigation of the Attila Deterministic Solver as a Supplement to Monte Carlo for Calculating Out-Of-Field Radiotherapy Dose M. Mille*, C. Lee, G. Failla

3:00 PM - 6:00 PM Sunday

SU-F-T-112 : Long-Term Follow-Up of NSCLC Patients Treated with Lung SBRT Using the Modified Conformal Arc (MDCA) Planning Technique E. Ku*, A. Desai, D. Fang, C. Lawrence, C. Iannuzzi, C. Shi

3:00 PM - 6:00 PM Sunday

SU-F-T-113 : Inherent Functional Dependence of Spinal Cord Doses of Variable Irradiated Volumes in Spine SBRT L. Ma*, S. Braunstein, J. Chiu, A. Sahgal

3:00 PM - 6:00 PM Sunday

SU-F-T-114 : A Novel Anatomically Predictive Extension Model of Computational Human Phantoms for Dose Reconstruction in Retrospective Epidemiological Studies of Second Cancer Risks in Radiotherapy Patients G. Kuzmin*, C. Lee, J. Jung, C. Pelletier, C. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-115 : Uncertainty in the Esophagus Dose in Retrospective Epidemiological Study of Breast Cancer Radiotherapy Patients E. Mosher, S. Kim*, C. Lee, C. Pelletier, J. Jung, E. Jones, C. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-116 : Predicting IQ and the Risk of Hearing Loss Following Proton Versus Photon Radiotherapy for Pediatric Brain Tumor Patients D. Fortin*, A. Ng, D. Tsang, M. Sharpe, N. Laperriere, D. Hodgson

3:00 PM - 6:00 PM Sunday

SU-F-T-117 : A Pilot Study of Organ Dose Reconstruction for Wilms Tumor Patients Treated with Radiation Therapy R. Makkia*, M. Gopalakrishnan, C. Lee, M. Mille, C. Pelletier, J. Kalapurakal, C. Lee, J. Jung

3:00 PM - 6:00 PM Sunday

SU-F-T-118 : Characterization of Change in Fractional Anisotropy After Radiation Therapy: Does Nearby Disruption Predict for White Matter Damage? N. Pettersson*, R. Karunamuni, M. Connor, V. Moiseenko, A. Dale, H. Bartsch, J. Brewer, A. Krishnan, J. Kuperman, D. Halger, C. McDonald, N. Farid, N. White, J. Hattangadi-Gluth, L. Cervino

3:00 PM - 6:00 PM Sunday

SU-F-T-119 : Development of Heart Prediction Model to Increase Accuracy of Dose Reconstruction for Radiotherapy Patients E. Mosher*, M. Choi, E. Jones, C. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-120 : How Many and Which Respiratory Phases Should Be Included During the 4D Robust Optimization Process S. Ge*, X. Wang, R. Mohan

3:00 PM - 6:00 PM Sunday

SU-F-T-121 : Abdominal Compression Effectively Reduces the Interplay Effect and Enables Pencil Beam Scanning Proton Therapy of Liver Tumors K. Souris*, A. Glick, M. Kang, G. Janssens, E. Sterpin, H. Lin, J. McDonough, C. Simone II, T. Solberg, E. Ben-Josef, J. Lee, L. Lin

3:00 PM - 6:00 PM Sunday

SU-F-T-122 : 4Dand 5D Proton Dose Evaluation with Monte Carlo U. Titt*, D. Mirkovic, P. Yepes, A. Liu, C. Peeler, S. Randenyia, R. Mohan

3:00 PM - 6:00 PM Sunday

SU-F-T-123 : The Simulated Effect of the Breath-Hold Reproducibility Treating Locally-Advanced Lung Cancer with Pencil Beam Scanned Proton Therapy J. Dueck*, R. Perrin, G. Persson, A. Lomax, M. Josipovic, S. Engelholm, D. Weber, P. Munck af Rosenschold

3:00 PM - 6:00 PM Sunday

SU-F-T-124 : Radiation Biological Equivalent Presentations OfLEM-1 and MKM Approaches in the Carbon-Ion Radiotherapy W. Hsi*, G. Jiang, Y. Sheng

3:00 PM - 6:00 PM Sunday

SU-F-T-125 : Radial Dose Distributions From Carbon Ions of Therapeutic Energies Calculated with Geant4-DNA O. Vassiliev*

3:00 PM - 6:00 PM Sunday

SU-F-T-126 : Microdosimetic Evaluation of Proton Energy Distributions in the Vicinity of Metal Implants S. Heczko*, G. McAuley, J. Slater, A. Wroe

3:00 PM - 6:00 PM Sunday

SU-F-T-127 : Charged Particle Transport in Condensed Media M. Dingfelder*, R. McLawhorn, E. Maertz, J. Shinpaugh

3:00 PM - 6:00 PM Sunday

SU-F-T-128 : Dose-Volume Constraints for Particle Therapy Treatment Planning R. Stewart*, W. Smith, K. Hendrickson, J. Meyer, N. Cao, E. Lee, O. Gopan, G. Sandison, U. Parvathaneni, G. Laramore

3:00 PM - 6:00 PM Sunday

SU-F-T-129 : Impact of Radial Fluctuations in RBE for Therapeutic Proton Beams M. Butkus*, T. Palmer

3:00 PM - 6:00 PM Sunday

SU-F-T-130 : [18F]-FDG Uptake Dose Response in Lung Correlates Linearly with Proton Therapy Dose D. Kim*, U. Titt, D. Mirkovic

3:00 PM - 6:00 PM Sunday

SU-F-T-131 : No Increase in Biological Effectiveness Through Collimator Scattered Low Energy Protons T. Matsuura*, S. Takao, Y. Matsuzaki, F. Yuusuke, T. Fujii, K. Maeda, H. Ueda, H. Koyano, K. Umegaki, H. Shirato

3:00 PM - 6:00 PM Sunday

SU-F-T-132 : Variable RBE Models Predict Possible Underestimation of Vaginal Dose for Anal Cancer Patients Treated Using Single-Field Proton Treatments A. McNamara*, T. Underwood, J. Wo, H. Paganetti

3:00 PM - 6:00 PM Sunday

SU-F-T-133 : Uniform Scanning Proton Therapy for Lung Cancer: Toxicity and Its Correlation with Dosimetry Y. Zheng*, S. Rana, G. Larson

3:00 PM - 6:00 PM Sunday

SU-F-T-134 : Can We Use the Same Dose Constrains Learnt From Photon World to Plan Proton for Lung Cancer? Z. Xiao*, J. Zou, N. Yue, M. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-135 : A Retrospective Analysis of the Impact of Range Uncertainty in Brain Patients K. Grantham*, L. Santanam, S. Goddu, B. Sun, T. Zhang, S. Mutic, C. Robinson, J. Huang, S. Perkins, C. Tsien, J. Bradley, T. Zhao

3:00 PM - 6:00 PM Sunday

SU-F-T-136 : Breath Hold Lung Phantom Study in Using CT Density Versus Relative Stopping Power Ratio for Proton Pencil Beam Scanning System J. Syh*, H. Wu, L. Rosen

3:00 PM - 6:00 PM Sunday

SU-F-T-137 : Out-Of-Beam Dose for a Compact Double-Scattering Proton Beam Therapy System M. Islam*, S. Ahmad, H. Jin

3:00 PM - 6:00 PM Sunday

SU-F-T-138 : Commissioning and Evaluating Dose Computation Models for a Dedicated Proton Line Scanning Beam Nozzle in Eclipse Treatment Planning System P. Tsai*, H. Huang, S. Cai, H. Chen, S. Wu, T. Wu, S. Lee, C. Yeh, T. Wu, C. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-139 : Meeting the Challenges of Quality Control in the TOPAS Monte Carlo Simulation Toolkit for Proton Therapy D. Hall*, J. Perl, J. Schuemann, B. Faddegon, H. Paganetti

3:00 PM - 6:00 PM Sunday

SU-F-T-140 : Assessment of the Proton Boron Fusion Reaction for Practical Radiation Therapy Applications Using MCNP6 D. Adam, B. Bednarz*

3:00 PM - 6:00 PM Sunday

SU-F-T-141 : Proton Dose Validation in a Phantom Beyond TRUFILL N-BCA Embolization Glue A. Mandapaka*, A. Ghebremedhin, B. Patyal

3:00 PM - 6:00 PM Sunday

SU-F-T-142 : An Analytical Model to Correct the Aperture Scattered Dose in Clinical Proton Beams B. Sun*, S. Liu, T. Zhang, T. Zhao, D. Yang, K. Grantham, S. Goddu, J. Bradley, S. Mutic

3:00 PM - 6:00 PM Sunday

SU-F-T-143 : Implementation of a Correction-Based Output Model for a Compact Passively Scattered Proton Therapy System S. Ferguson*, S. Ahmad, Y. Chen, C. Ferreira, M. Islam, V. Keeling, A. Lau, H. Jin

3:00 PM - 6:00 PM Sunday

SU-F-T-144 : Analytical Closed Form Approximation for Carbon Ion Bragg Curves in Water S. Tuomanen*, V. Moskvin, J. Farr

3:00 PM - 6:00 PM Sunday

SU-F-T-145 : Modeling of a Proton Pencil Beam Partially Blocked by a Collimator R. Slopsema, W. Matysiak*

3:00 PM - 6:00 PM Sunday

SU-F-T-146 : Comparing Monte Carlo Simulations with Commissioning Beam Data for Mevion S250 Proton Therapy System M. Prusator*, H. Jin, S. Ahmad, Y. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-147 : An Alternative Parameterization of Scatter Behavior Allows Significant Reduction of Beam Characterization for Pencil Beam Proton Therapy F. Van den Heuvel*, F. Fiorini, B. George

3:00 PM - 6:00 PM Sunday

SU-F-T-148 : Are the Approximations in Analytic Semi-Empirical Dose Calculation Algorithms for Intensity Modulated Proton Therapy for Complex Heterogeneities of Head and Neck Clinically Significant? P. Yepes*, R. Mohan, U. Titt, D. Mirkovic, A. Liu, S. Frank

3:00 PM - 6:00 PM Sunday

SU-F-T-149 : Development of the Monte Carlo Simulation Platform Using Geant4 for Designing Heavy Ion Therapy Beam Nozzle J. Shin*, S. Yoo, S. Cho, E. Kim, Y. Song, W. Jung

3:00 PM - 6:00 PM Sunday

SU-F-T-150 : Comparing Normal Tissue Irradiated Volumes for Proton Vs. Photon Treatment Plans On Lung Patients A. Liu*, R. Mohan, Z. Liao

3:00 PM - 6:00 PM Sunday

SU-F-T-151 : Measurement Evaluation of Skin Dose in Scanning Proton Beam Therapy for Breast Cancer J. Yu*, E. Nichols, D. Strauss, H. Chung, U. Langner, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-152 : Experimental Validation and Calculation Benchmark for a Commercial Monte Carlo Pencil BeamScanning Proton Therapy Treatment Planning System in Heterogeneous Media L. Lin, S. Huang*, M. Kang, C. Ainsley, C. Simone II, J. McDonough, T. Solberg

3:00 PM - 6:00 PM Sunday

SU-F-T-153 : Experimental Validation and Calculation Benchmark for a Commercial Monte Carlo Pencil Beam Scanning Proton Therapy Treatment Planning System in Water L. Lin, S. Huang*, M. Kang, C. Ainsley, P. Hiltunen, R. Vanderstraeten, J. Lindberg, S. Siljamaki, T. Wareing, I. Davis, A. Barnett, J. McGhee, T. Solberg, J. McDonough, C. Simone II

3:00 PM - 6:00 PM Sunday

SU-F-T-154 : An Evaluation and Quantification of Secondary Neutron Radiation Dose Due to Double Scatter and Pencil Beam Scanning Proton Therapy A. Glick*, E. Diffenderfer

3:00 PM - 6:00 PM Sunday

SU-F-T-155 : Validation of a Commercial Monte Carlo Dose Calculation Algorithm for Proton Therapy J. Saini*, S. St. James, E. Traneus, T. Wong, R. Stewart, C. Bloch

3:00 PM - 6:00 PM Sunday

SU-F-T-156 : Monte Carlo Simulation Using TOPAS for Synchrotron Based Proton Discrete Spot Scanning System V. Moskvin*, F. Pirlepesov, P. Tsiamas, M. Axente, R. Lukose, L. Zhao, J. Shin, J. Farr

3:00 PM - 6:00 PM Sunday

SU-F-T-157 : Physics Considerations Regarding Dosimetric Accuracy of Analytical Dose Calculations for Small Field Proton Therapy: A Monte Carlo Study C. Geng*, J. Daartz, K. Cheung, M. Bussiere, H. Shih, H. Paganetti, J. Schuemann

3:00 PM - 6:00 PM Sunday

SU-F-T-158 : Experimental Characterization of Field Size Dependence of Dose and Lateral Beam Profiles of Scanning Proton and Carbon Ion Beams for Empirical Model in Air Y. Li*, W. Hsi, J. Zhao

3:00 PM - 6:00 PM Sunday

SU-F-T-159 : Monte Carlo Simulation Studies of Three-Dimensional Dose Distribution for Polymer Gel Dosimeter and Radiochromic Gel Dosimeter in a Proton Beam M. Park*, G. Kim, H. Jung, S. Park, S. Park, Y. Ji, J. Yun

3:00 PM - 6:00 PM Sunday

SU-F-T-160 : Commissioning of a Single-Room Double-Scattering Proton Therapy System H. Jin*, S. Ahmad, Y. Chen, C. Ferreira, M. Islam, V. Keeling, A. Lau, S. Ferguson

3:00 PM - 6:00 PM Sunday

SU-F-T-161 : The Effect of Pencil Beam Scanning Gantry Angle Dependent Spot Size Variations On Plan Quality U. Langner*, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-162 : Comparison of Beam Data for Two Varian ProBeam Pencil Beam Scanning Proton Systems U. Langner*, J. Eley, M. Zhu, J. Yu, H. Chung, J. Polf, L. Dong, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-163 : Improve Proton Therapy Efficiency: Report of a Workshop Y. Zheng*, J. Flanz, D. Mah, M. Pankuch, C. Beltran, B. Robison, B. Kreydick, A. Schreuder

3:00 PM - 6:00 PM Sunday

SU-F-T-164 : Investigation of PRESAGE Formulation On Signal Quenching in a Proton Beam M. Carroll*, M. Alqathami, G. Ibbott

3:00 PM - 6:00 PM Sunday

SU-F-T-165 : Daily QA Analysis for Spot Scanning Beamline F. Poenisch*, M. Gillin, N. Sahoo, C. Martin, X. Zhu

3:00 PM - 6:00 PM Sunday

SU-F-T-166 : On the Nature of the Background Visible Light Observed in Fiber Optic Dosimetry of Proton Beams A. Darafsheh*, R. Taleei, A. Kassaee, J. Finlay

3:00 PM - 6:00 PM Sunday

SU-F-T-167 : Measurement of Proton Beam Spot Size Using a 2D Ion Chamber Array for Daily QA N. Thorne*, A. Kassaee

3:00 PM - 6:00 PM Sunday

SU-F-T-168 : Development and Implementation of An Anthropomorphic Head & Neck Phantom for the Assessment of Proton Therapy Treatment Procedures D. Branco*, P. Taylor, S. Frank, H. Li, X. Zhang, H. Mehrens, M. Guindani, D. Followill

3:00 PM - 6:00 PM Sunday

SU-F-T-169 : A Periodic Quality Assurance Program for a Spot-Scanning Proton Treatment Facility D. Mundy*, E. Tryggestad, C. Beltran, K. Furutani, G. Gilson, S. Ito, J. Johnson, J. Kruse, N. Remmes, A. Tasson, T. Whitaker, M. Herman

3:00 PM - 6:00 PM Sunday

SU-F-T-170 : Patient Surface Dose Measurements Using Optically Stimulated Luminescence Dosimeters in Scanning Proton Beam Therapy for Breast Cancer J. Yu*, D. Strauss, U. Langner, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-171 : Manufacturing Cost Effective Heterogeneous Phantoms for Use in Proton Therapy D. Johnson, Y. Chen, S. Ahmad, J. Pruett*

3:00 PM - 6:00 PM Sunday

SU-F-T-172 : A Method for Log File QA On An IBA Proteus System for Patient Specific Spot Scanning Quality Assurance S. Tang, M. Ho*, I. Rice, D. Doan, C. Chen, B. Mac Rae, D. Mah

3:00 PM - 6:00 PM Sunday

SU-F-T-173 : One-Scan Protocol: Verifying the Delivery of Spot-Scanning Proton Beam M. Chan*, C. Chen, J. Li, X. Tang, X. Li, G. Tang, D. Mah

3:00 PM - 6:00 PM Sunday

SU-F-T-174 : Patient-Specific Point Dose Measurement Using Fiber Optic Radiation Sensor Using Cerenkov Radiation for Proton Therapeutic Beam J. Son*, M. Kim, M. Yoon, D. Shin

3:00 PM - 6:00 PM Sunday

SU-F-T-175 : Absorbed Dose Measurement Using Radiophotoluminescent Glass Dosimeter in Therapeutic Proton Beam W. Chang*, Y. Koba, T. Katayose, M. Hariu, K. Yasui, H. Saitoh

3:00 PM - 6:00 PM Sunday

SU-F-T-176 : Therapeutic Proton Beam Range Measurement Method with EBT3 Film N. Lee*

3:00 PM - 6:00 PM Sunday

SU-F-T-177 : Impacts of Gantry Angle Dependent Scanning Beam Properties for Proton Treatment Y. Lin*, B. Clasie, H. Lu, J. Flanz, K. Jee

3:00 PM - 6:00 PM Sunday

SU-F-T-178 : Optimized Design of a Diamond Detector Specifically Dedicated to the Dose Distribution Measurements in Clinical Proton Pencil Beams C. Moignier*, D. Tromson, F. Marsolat, L. De Marzi, M. Pomorski, M. Agelou, J. Garcia Hernandez, D. Lazaro, A. Mazal

3:00 PM - 6:00 PM Sunday

SU-F-T-179 : Fast and Accurate Profile Acquisition for Proton Beam Using Multi-Ion Chamber Arrays X. Wang*, X. Mo, J. Zou, T. Chen, N. Yue, M. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-180 : Evaluation of a Scintillating Screen Detector for Proton Beam QA and Acceptance Testing A. Ghebremedhin*, M. Taber, P. Koss, G. Camargo, S. Ebstein, B. Patyal

3:00 PM - 6:00 PM Sunday

SU-F-T-181 : Proton Therapy Tissue-Equivalence of 3D Printed Materials P. Taylor*, D. Craft, D. Followill, R. Howell

3:00 PM - 6:00 PM Sunday

SU-F-T-182 : A Stochastic Approach to Daily QA Tolerances On Spot Properties for Proton Pencil Beam Scanning S. St. James*, J. Saini, C. Bloch

3:00 PM - 6:00 PM Sunday

SU-F-T-183 : Design of a Beam Shaping Assembly of a Compact DD-Based Boron Neutron Capture Therapy System M. Hsieh*, Y. Liu, L. Nie

3:00 PM - 6:00 PM Sunday

SU-F-T-184 : 3D Range-Modulator for Scanned Particle Therapy: Development, Monte Carlo Simulations and Measurements Y. Simeonov*, P. Penchev, T. Printz Ringbaek, S. Brons, K. Zink, U. Weber

3:00 PM - 6:00 PM Sunday

SU-F-T-185 : Study of the Robustness of a Proton Arc Technique Based On PBS Beams B. Wang*, Y. Zheng

3:00 PM - 6:00 PM Sunday

SU-F-T-186 : A Treatment Planning Study of Normal Tissue Sparing with Robustness Optimized IMPT, 4Pi IMRT, and VMAT for Head and Neck Cases J. Zhang*, D. Nguyen, K. Woods, A. Tran, X. Li, X. Ding, P. Kabolizadeh, T. Guerrero, K. Sheng

3:00 PM - 6:00 PM Sunday

SU-F-T-187 : Quantifying Normal Tissue Sparing with 4D Robust Optimization of Intensity Modulated Proton Therapy M. Newpower*, S. Ge, R. Mohan

3:00 PM - 6:00 PM Sunday

SU-F-T-188 : A Robust Treatment Planning Technique for Proton Pencil Beam Scanning Cranial Spinal Irradiation M. Zhu*, M. Yam, M. Mehta, S. Badiyan, K. Young, R. Malyapa, W. Regine, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-189 : Dosimetric Comparison of Spot-Scanning Proton Therapy Techniques for Liver Tumors Close to the Skin Surface S. Takao*, T. Matsuura, Y. Matsuzaki, F. Yuusuke, T. Fujii, N. Katoh, S. Shimizu, K. Umegaki, H. Shirato

3:00 PM - 6:00 PM Sunday

SU-F-T-190 : Homogeneity Study of Proton and Heavy Ion Scanning Beams Based On Different Compositions of Spot Sizes (FWHM) and Grid Sizes J. Zhao*, W. Hu, y. Xing, X. Wu, Y. Li

3:00 PM - 6:00 PM Sunday

SU-F-T-191 : 4D Dose Reconstruction of Intensity Modulated Proton Therapy (IMPT) Based On Breathing Probability Density Function (PDF) From 4D Cone Beam Projection Images: A Study for Lung Treatment J. Zhou*, X. Ding, J. Liang, J. Zhang, Y. Wang, D. Yan

3:00 PM - 6:00 PM Sunday

SU-F-T-192 : Study of Robustness Analysis Method of Multiple Field Optimized IMPT Plans for Head & Neck Patients Y. Li*, X. Wang, H. Li, J. Wang, X. Zhu, Y. Li, S. Frank, X. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-193 : Evaluation of a GPU-Based Fast Monte Carlo Code for Proton Therapy Biological Optimization R. Taleei*, C. Peeler, N. Qin, S. Jiang, X. Jia

3:00 PM - 6:00 PM Sunday

SU-F-T-194 : Analyzing the Effect of Range Shifter Air Gap On TPS Dose Modeling Accuracy in Superficial PBS Proton Therapy R. Shirey*, H. Wu

3:00 PM - 6:00 PM Sunday

SU-F-T-195 : Systematic Constraining of Contralateral Parotid Gland Led to Improved Dosimetric Outcomes for Multi-Field Optimization with Scanning Beam Proton Therapy: Promising Results From a Pilot Study in Patients with Base of Tongue Carcinoma R. Wu*, C. Crowford, R. Georges, A. Liu, M. Amin, T. Sio, B. Gunn, F. Poenisch, M. Palmer, M. Gillin, S. Frank, X. Zhu

3:00 PM - 6:00 PM Sunday

SU-F-T-196 : Hypo-Fractionation with Intensity Modulated Proton Therapy for Unilateral Metallic Prosthesis Prostate Cancer Patients S. Rana*, Y. Zheng, C. Cheng, . Pokharel, Y. Zhang, S. Park

3:00 PM - 6:00 PM Sunday

SU-F-T-197 : Investigating Optimal Oblique-Beam Arrangement for Bilateral Metallic Prosthesis Prostate Cancer in Pencil Beam Scanning Proton Therapy S. Rana*, Y. Zheng, C. Cheng, H. Singh, T. Twyford, B. Tesfamicael, S. Park

3:00 PM - 6:00 PM Sunday

SU-F-T-198 : Dosimetric Comparison of Carbon and Proton Radiotherapy for Recurrent Nasopharynx Carcinoma Y. Sheng*, j. zhao, w. wang, L. Lin, x. liu, K. Shahnazi

3:00 PM - 6:00 PM Sunday

SU-F-T-199 : A New Strategy for Integrating Photon with Proton and Carbon Ion in the Treatment Planning Z. Chen*, J. Wang, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-200 : Dosimetric Variation of Organs at Risk for Recurrent Nasopharyngeal Carcinoma (rNPC) Patients Treated by Carbon Ion Beams w. wang*, Y. Sheng, K. Lin, K. Shahnazi

3:00 PM - 6:00 PM Sunday

SU-F-T-201 : Acceleration of Dose Optimization Process Using Dual-Loop Optimization Technique for Spot Scanning Proton Therapy S. Hirayama*, R. Fujimoto

3:00 PM - 6:00 PM Sunday

SU-F-T-202 : An Evaluation Method of Lifetime Attributable Risk for Comparing Between Proton Beam Therapy and Intensity Modulated X-Ray Therapy for Pediatric Cancer Patients by Averaging Four Dose-Response Models for Carcinoma Induction M. Tamura*, Y. Ito, H. Sakurai, M. Mizumoto, S. Kamizawa, S. Murayama, H. Yamashita, S. Takao, R. Suzuki, H. Shirato

3:00 PM - 6:00 PM Sunday

SU-F-T-203 : High Dose Definitive Proton Therapy with Integrated Boost to Hypoxic Subvolumes Determined by [18F]-Fluoromisonidazole (FMISO) PET/CT for Patients with Recurrent Chordomas Using Intensity Modulated Proton Therapy (IMPT) S. Yan*, G. Broussard, K. De Amorim Bernstein, Y. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-204 : A Preliminary Approach of Reducing Contralateral Breast and Heart Dose in Left Sided Whole Breast Cancer Patients Utilizing Proton Beams M. Islam, O. Algan, H. Jin, S. Ahmad, S. Hossain*

3:00 PM - 6:00 PM Sunday

SU-F-T-205 : Effectiveness of Robust Treatment Planning to Account for Inter-Fractional Variation in Intensity Modulated Proton Therapy for Head Neck Cancer X. Li*, J. Zhang, A. Qin, J. Liang, J. Zhou, D. Yan, P. Chen, D. Krauss, X. Ding

3:00 PM - 6:00 PM Sunday

SU-F-T-206 : Proton Treatment Techniques for Posterior Fossa Tumors: Consequences for LET and Dose/Volume Parameters for the Brainstem and Organs at Risk D. Giantsoudi*, J. Adams, S. MacDonald, H. Paganetti

3:00 PM - 6:00 PM Sunday

SU-F-T-207 : Does the Greater Flexibility of Pencil Beam Scanning Reduce the Need for a Proton Gantry? S. Yan*, N. Depauw, J. Flanz, J. Adams, B. Gorissen, H. Shih, T. Bortfeld, H. Lu

3:00 PM - 6:00 PM Sunday

SU-F-T-208 : An Efficient Planning Approach to Posterior Fossa Tumor Bed Boosts Using Proton Pencil Beam Scanning in Fixed-Beam Room N. Ju, C. Chen*, S. Gans, E. Hug, O. Cahlon, S. Wolden, B. Chon, B. Yeh, H. Tsai, K. Sine, D. Mah

3:00 PM - 6:00 PM Sunday

SU-F-T-209 : Multicriteria Optimization Algorithm for Intensity Modulated Radiation Therapy Using Pencil Proton Beam Scanning C. Beltran, H. Kamal*

3:00 PM - 6:00 PM Sunday

SU-F-T-210 : The Variable Virtual Source-To-Axis Distance Effect On A Compact Proton Pencil Beam Scanning System J. Zhang*, X. Li, X. Ding

3:00 PM - 6:00 PM Sunday

SU-F-T-211 : Evaluation of a Dual Focusing Magnet System for the Treatment of Small Proton Targets T. Nguyen*, G. McAuley, S. Heczko, J. Slater, A. Wroe

3:00 PM - 6:00 PM Sunday

SU-F-T-212 : A Comparison of Treatment Strategies for Intracranial Stereotactic Radiosurgery T. Lamberton, J. Slater, A. Wroe*

3:00 PM - 6:00 PM Sunday

SU-F-T-213 : Commissioning Results of the Prototype Active Scanning Irradiation System of Korea Heavy Ion Medical Accelerator C. Kim*, J. Seduk, T. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-214 : Re-Thinking the Useful Clinical Beam Energy in Proton Therapy: An Opportunity for Cost Reduction E. Bentefour*, H. Lu

3:00 PM - 6:00 PM Sunday

SU-F-T-215 : An Investigation Of Multi-Scanner CT Hounsfield Unit Calibration for Pencil Beam Scanning Proton Therapy Using 3D Gamma Analysis J. Zhang*, X. Li, G. Liu, Q. Liu, J. Liang, X. Ding

3:00 PM - 6:00 PM Sunday

SU-F-T-216 : Evaluating Dosimetry Accuracy of a Treatment Planning System On Small Proton Fields M. Zhang*, Z. Xiao, J. Zou, T. Chen, N. Yue

3:00 PM - 6:00 PM Sunday

SU-F-T-217 : A Comprehensive Monte-Carlo Study of Out-Of-Field Secondary Neutron Spectra in a Scanned-Beam Proton Therapy Treatment Room F. Englbrecht*, S. Trinkl, V. Mares, W. Ruhm, M. Wielunski, J. Wilkens, M. Hillbrand, K. Parodi

3:00 PM - 6:00 PM Sunday

SU-F-T-218 : Validation of An In-Vivo Proton Range Verification Method for Reducing the Risk of Permanent Alopecia in the Treatment of Pediatric Medulloblastoma G. Lucconi*, E. Bentefour, S. Deepak, G. Janssens, K. Weaver, M. Moteabbed, H. Lu

3:00 PM - 6:00 PM Sunday

SU-F-T-219 : Verification of the Accuracy of a Relative Stopping Power (RSP) to Hounsfield Unit (HU) Calibration Curve Produced for Proton Treatment Planning Using EBT3-Gafchromic Film Dosimetry E. Schnell*, C. Ferreira, S. Ahmad, T. De La Fuente Herman

3:00 PM - 6:00 PM Sunday

SU-F-T-220 : Validation of Hounsfield Unit-To-Stopping Power Ratio Calibration Used for Dose Calculation in Proton Radiotherapy J. Polf*, H. Chung, K. Langen

3:00 PM - 6:00 PM Sunday

SU-F-T-221 : An Assessment of the Potential for Improved Local Control of Skull-Base Chordomas Via Reduction of the Proton Beam Range Uncertainty L. Muller*, A. Soldner, M. Kirk, M. Fager, T. Solberg, L. Robert, D. Dolney

3:00 PM - 6:00 PM Sunday

SU-F-T-222 : Dose of Fetus and Infant Following Accidental Intakes of I-131 by the Mother Y. Wang*, P. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-223 : Radiotherapy Incident Reporting and Analysis System (RIRAS):Early Experience R. Kapoor*, D. Burkett, E. Leidholdt, J. Palta, M. Hagan

3:00 PM - 6:00 PM Sunday

SU-F-T-224 : Importance of Timely Review of Daily Cone-Beam CTs: Dosimetric Evaluation of Rejected CBCTs for Head and Neck Patients M. Andrews*, S. Lin, N. Yu, N. Joshi, S. Koyfman, P. Xia

3:00 PM - 6:00 PM Sunday

SU-F-T-225 : Is It Time to Have Pre-Configured Therapeutic Beams Available in Commercial Treatment Planning Systems? G. Ding*

3:00 PM - 6:00 PM Sunday

SU-F-T-226 : QA Management for a Large Institution with Multiple Campuses for FMEA G. Tang*, M. Chan, D. Lovelock, S. Lim, R. Febo, J. DeLauter, S. Both, X. Li, R. Ma, Z. Saleh, Y. Song, X. Tang, W. Xiong, M. Hunt, T. LoSasso

3:00 PM - 6:00 PM Sunday

SU-F-T-227 : A Comprehensive Patient Specific, Structure Specific, Pre-Treatment 3D QA Protocol for IMRT, SBRT and VMAT - Clinical Experience G. Gueorguiev*, C. Cotter, M. Young, D. Toomeh, F. Khan, B. Crawford, J. Turcotte, M. Mah'D, G. Sharp

3:00 PM - 6:00 PM Sunday

SU-F-T-228 : Analysis of Multi-Leaf Collimator Leaf Position Errors in Volumetric Modulated Arc Therapy for Nasopharyngeal Carcinoma C. Li*, Y. Yin

3:00 PM - 6:00 PM Sunday

SU-F-T-229 : A Novel Method for EPID-Based In-Vivo Exit Dose Verification for Intensity Modulated Radiotherapy Z. Wu*, J. Wang, J. Peng, J. Wang, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-230 : A Simple Method to Assess Accuracy of Dynamic Wave Arc Irradiation Using An Electronic Portal Imaging Device and Log Files H. Hirashima*, Y. Miyabe, K. Yokota, M. Nakamura, N. Mukumoto, T. Mizowaki, M. Hiraoka

3:00 PM - 6:00 PM Sunday

SU-F-T-231 : Improving the Efficiency of a Radiotherapy Peer-Review System for Quality Assurance S. Hsu, A. Basavatia*, M. Garg, S. Kalnicki, W. Tome

3:00 PM - 6:00 PM Sunday

SU-F-T-232 : Monthly Quality Assurance in External Beam Radiation Therapy Using a Single System K. Ding*, T. Ji, I. Iordachita, E. Velarde, J. Hyatt, J. Wong

3:00 PM - 6:00 PM Sunday

SU-F-T-233 : Evaluation of Treatment Delivery Parameters Using High Resolution ELEKTA Log Files C. Kabat*, D. Defoor, A. Alexandrian, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-234 : Quality Improvements in the Electronic Medical Record of Patients Treated with High Dose-Rate Brachytherapy T. Diener*, D. Wilkinson

3:00 PM - 6:00 PM Sunday

SU-F-T-235 : Optical Scan Based Collision Avoidance Using Multiple Stereotactic Cameras During Simulation R. Cardan*, R. Popple, M. Dobelbower, J. De Los Santos, J. Fiveash

3:00 PM - 6:00 PM Sunday

SU-F-T-236 : Comparison of Two IMRT/VMAT QA Systems Using Gamma Index Analysis N. Dogan, S. Denissova*

3:00 PM - 6:00 PM Sunday

SU-F-T-237 : The Imaging and Radiation Oncology Core (IROC) Cooperatives Activities Supporting the NCI's National Clinical Trial Network D. Followill*, J. Galvin, J. Michalski, M. Rosen, T. FitzGerald, M. Knopp

3:00 PM - 6:00 PM Sunday

SU-F-T-238 : Analyzing the Performance of MapCHECK2 and Delta4 Quality Assurance Phantoms in IMRT and VMAT Plans S. Lu*, Y. Tsai, H. Lan, S. Wen, L. Chen, S. Kuo, C. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-239 : Evaluation of Plastic Scintillator Light Output for Various Lead Doping Concentrations: Towards LET Detection H. Nusrat*, G. Pang, A. Sarfehnia

3:00 PM - 6:00 PM Sunday

SU-F-T-240 : EPID-Based Quality Assurance for Dosimetric Credentialing N. Miri*, J. Lehmann, P. Vial, P. Greer

3:00 PM - 6:00 PM Sunday

SU-F-T-241 : Reduction in Planning Errors Via a Process Control Developed Using the Eclipse Scripting API D. Barbee*, A. McCarthy, P. Galavis, A. Xu

3:00 PM - 6:00 PM Sunday

SU-F-T-242 : A Method for Collision Avoidance in External Beam Radiation Therapy I. Buzurovic*, R. Cormack

3:00 PM - 6:00 PM Sunday

SU-F-T-243 : Major Risks in Radiotherapy. A Review Based On Risk Analysis Literature J. Lopez Tarjuelo*, A. Bouche-Babiloni, V. Morillo-Macias, M. Guasp-Tortajada, N. Iglesias-Montenegro, P. Monasor-Denia, C. Ferrer-Albiach

3:00 PM - 6:00 PM Sunday

SU-F-T-244 : Radiotherapy Risk Estimation Based On Expert Group Survey J. Koo*, M. Yoon, W. Chung, M. Chung, D. Kim

3:00 PM - 6:00 PM Sunday

SU-F-T-245 : The Investigation of Failure Mode and Effects Analysis and PDCA for the Radiotherapy Risk Reduction J. Xie*, J. Wang, J. Peng, J. Chen, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-246 : Evaluation Of Healthcare Failure Mode And Effect Analysis For Risk Assessment T. Harry*, R. Manger, L. Cervino, T. Pawlicki

3:00 PM - 6:00 PM Sunday

SU-F-T-247 : Collision Risks in a Modern Radiation Oncology Department: An Efficient Approach to Failure Modes and Effects Analysis L. Schubert*, D. Westerly, Y. Vinogradskiy, J. Aldridge, C. Fisher, A. Liu

3:00 PM - 6:00 PM Sunday

SU-F-T-248 : FMEA Risk Analysis Implementation (AAPM TG-100) in Total Skin Electron Irradiation Technique B. Ibanez-Rosello*, J. Bautista-Ballesteros, J. Bonaque, J. Perez-Calatayud, A. Gonzalez-Sanchis, J. Lopez-Torrecilla, L. Brualla, T. Garcia-Hernandez, A. Vicedo-Gonzalez, D. Granero, A. Serrano, B. Borderia, C. Solera, J. Rosello

3:00 PM - 6:00 PM Sunday

SU-F-T-249 : Application of Human Factors Methods: Usability Testing in the Radiation Oncology Environment H. Warkentin*, K. Bubric, H. Giovannetti, G. Graham, C. Clay

3:00 PM - 6:00 PM Sunday

SU-F-T-250 : What Does It Take to Correctly Assess the High Failure Modes of An Advanced Radiotherapy Procedure Such as Stereotactic Body Radiation Therapy? D. Han*, D. Vile, M. Rosu, J. Palta

3:00 PM - 6:00 PM Sunday

SU-F-T-251 : The Quality Assurance for the Heavy Patient Load Department in the Developing Country:The Primary Experience of An Entire Workflow QA Process Management in Radiotherapy J. Xie*, J. Wang, J. Peng, J. Chen, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-252 : An Investigation of Gamma Knife Frame Definition Error When Using a Pre-Planning Workflow P. Johnson*

3:00 PM - 6:00 PM Sunday

SU-F-T-253 : Volumetric Comparison Between 4D CT Amplitude and Phase Binning Mode G. Yang*, X. Li, R. Ma, E. Yorke, G. Mageras, X. Tang, W. Xiong, M. Chan, M. Reyngold, R. Gewanter, A. Wu, J. Deasy, M. Hunt

3:00 PM - 6:00 PM Sunday

SU-F-T-254 : Dose Volume Histogram (DVH) Analysis of Breath Hold Vs Free Breathing Techniques for Esophageal Tumors R. Badkul*, K. Doke, D. Pokhrel, N. Aguilera, C. Lominska

3:00 PM - 6:00 PM Sunday

SU-F-T-255 : Accuracy and Precision of Dynamic Tracking Irradiation with VERO-4DRT System N. Hayashi*, Y. Takada, T. Mizuno, H. Nakae, T. Murai

3:00 PM - 6:00 PM Sunday

SU-F-T-256 : 4D IMRT Planning Using An Early Prototype GPU-Enabled Eclipse Workstation A. Hagan*, A. Modiri, M. Svatos, A. Sawant

3:00 PM - 6:00 PM Sunday

SU-F-T-257 : Comparison Study of the Biological and Physical Optimization for Cervical Carcinoma Z. Feng*, C. Tao, J. Zhu, G. Yu, S. Qin, Y. Yin, D. Li

3:00 PM - 6:00 PM Sunday

SU-F-T-258 : Efficacy of Exit Fluence-Based Dose Calculation for Prostate Radiation Therapy J. Siebers*, J. Gardner, B. Neal

3:00 PM - 6:00 PM Sunday

SU-F-T-259 : GPR Tables for the Estimation of Mid-Plane Dose Using EPID G. Annamalai, Y. Watanabe*

3:00 PM - 6:00 PM Sunday

SU-F-T-260 : Using Portal Image Device for Pre-Treatment QA in Volumetric Modulated Arc Plans with Flattening Filter Free (FFF) Beams H. Qu*, P. Qi, N. Yu, P. Xia

3:00 PM - 6:00 PM Sunday

SU-F-T-261 : Reconstruction of Initial Photon Fluence Based On EPID Images T. Seliger*, D. Czarnecki, R. Kussather, U. Mader, R. Engenhart-Cabillic, B. Poppe, K. Zink

3:00 PM - 6:00 PM Sunday

SU-F-T-262 : Commissioning Varian Portal Dosimetry for EPID-Based Patient Specific QA in a Non-Aria Environment M. Schmidt*, N. Knutson, J. Herrington, M. Price

3:00 PM - 6:00 PM Sunday

SU-F-T-263 : Dosimetric Characteristics of the Cine Acquisition Mode of An A-Si EPID O. Bawazeer, S. Sarasanandarajah*, S. Herath, T. Kron, P. Deb

3:00 PM - 6:00 PM Sunday

SU-F-T-264 : VMAT QA With 2D Radiation Measuring Equipment Attached to Gantry A. Fung*

3:00 PM - 6:00 PM Sunday

SU-F-T-265 : Calibration of EBT2 Film Using the Microtek ScanMaker 9800XL Plus Flatbed Scanner with a Modified One Red-Channel After Three-Channel Method L. Chang*

3:00 PM - 6:00 PM Sunday

SU-F-T-266 : Dynalogs Based Evaluation of Different Dose Rate IMRT Using DVH and Gamma Index S. Ahmed*, S. Ahmed, F. Ahmed, A. Hussain

3:00 PM - 6:00 PM Sunday

SU-F-T-267 : A Clarkson-Based Independent Dose Verification for the Helical Tomotherapy H. Nagata*, H. Hongo, D. Kawai, R. Takahashi, H. Hashimoto, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-268 : A Feasibility Study of Independent Dose Verification for Vero4DRT M. Yamashita*, R. Takahashi, M. Kokubo, K. Takayama, H. Tanabe, M. Sueoka, M. Ishii, N. Okuuchi, Y. Iwamoto, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-269 : Preliminary Experience of Kuwait Cancer Control Center (KCCC) On IMRT Treatment Planning and Pre-Treatment Verification S. Thoomatti*, M. Sherif, N. Subramanian, O. Zoueil, K. Mirza

3:00 PM - 6:00 PM Sunday

SU-F-T-270 : A Technique for Modeling a Diode Array Into the TPS for Lung SBRT Patient Specific QA C. Curley*, Z. Ouhib, T. Leventouri

3:00 PM - 6:00 PM Sunday

SU-F-T-271 : Comparing IMRT QA Pass Rates Before and After MLC Calibration A. Mazza*, D. Perrin, J. Fontenot

3:00 PM - 6:00 PM Sunday

SU-F-T-272 : Patient Specific Quality Assurance of Prostate VMAT Plans with Portal Dosimetry J. Darko*, A. Kiciak, S. Badu, G. Grigorov, A. Fleck, E. Osei

3:00 PM - 6:00 PM Sunday

SU-F-T-273 : Using a Diode Array to Explore the Weakness of TPS DoseCalculation Algorithm for VMAT and Sliding Window Techniques J. Park*, B. Lu, G. Yan, J. Park, F. Li, J. Li, C. Liu

3:00 PM - 6:00 PM Sunday

SU-F-T-274 : Modified Dose Calibration Methods for IMRT QA W. Luo*, S. Westlund

3:00 PM - 6:00 PM Sunday

SU-F-T-275 : A Correlation Study On 3D Fluence-Based QA and 2D Dose Measurement-Based QA S. Liu*, T. Mazur, H. Li, O. Green, B. Sun, S. Mutic, D. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-276 : Source Modeling and VMAT Quality Assurance Referring to the TrueBeam Representative Beam Data for Eclipse Q. Wu*

3:00 PM - 6:00 PM Sunday

SU-F-T-277 : Using Dose Weighted Mean Effective Depth to Improve Accuracy of Secondary MU Calculation for VMAT Plans H. Qu*, N. Yu, P. Qi, A. Godley, P. Xia

3:00 PM - 6:00 PM Sunday

SU-F-T-278 : Evaluation of Commercially Available System for Patient Specific QA Using Dose Volume Histograms A. Alexandrian*, C. Kabat, J. Roring, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-279 : Impact of Beam Energy Drifts On IMRT Delivery Accuracy S. Goddu*, G. Kamal, A. Herman, S. Edwards, S. Yaddanapudi, S. Oddiraju, B. Cai, D. Rangaraj, S. Mutic

3:00 PM - 6:00 PM Sunday

SU-F-T-280 : An Assessment of Deviations in Gamma Index Between PTW Octavius4D Phantom Measurements and Various Treatment Planning Systems J. Roring*, A. Alexandrian, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-281 : Monte Carlo Investigation of Sources of Dosimetric Discrepancies with 2D Arrays M. Afifi*, N. Deiab, A. El-Farrash, A. Abd El-Hafez, A. Eldib, I. Veltchev, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-282 : Quality Assurance for IMRT/VMAT QA Devices: Issues Affecting the Timing for ArcCHECK Recalibration J. Steers*, B. Fraass

3:00 PM - 6:00 PM Sunday

SU-F-T-283 : A Novel Device to Enable Portal Dosimetry for Flattening Filter Free Beams A. Faught*, Q. Wu, J. Adamson

3:00 PM - 6:00 PM Sunday

SU-F-T-284 : The Effect of Linear Accelerator Output Variation On the Quality of Patient Specific Rapid Arc Verification Plans G. Sandhu*, F. Cao, S. Szpala, K. Kohli

3:00 PM - 6:00 PM Sunday

SU-F-T-285 : Evaluation of a Patient DVH-Based IMRT QA System H. Zhen*, G. Redler, J. Chu, J. Turian

3:00 PM - 6:00 PM Sunday

SU-F-T-286 : Calculation-Based Patient Specific IMRT QA Detects Potential Errors That Measurement-Based QA Does Not S. Mossahebi*, K. Langen, M. Guerrero, B. Yi, W. Lu, C. Kalavagunta, K. Prado, S. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-287 : A Preliminary Study On Patient Specific VMAT Verification Using a Phosphor-Screen Based Geometric QA System (Raven QA) M. Lee*, J. Wong, K. Ding, B. Yi

3:00 PM - 6:00 PM Sunday

SU-F-T-288 : Impact of Trajectory Log Files for Clarkson-Based Independent Dose Verification of IMRT and VMAT R. Takahashi*, T. Kamima, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-289 : MLC Fluence Sonogram Based Delivery Quality Assurance for Bilateral Breast Irradiation R. Thiyagarajan*, K. KP, T. Kataria, A. Nambi Raj, R. Mahendran, T. Selvan, P. Duraikannu

3:00 PM - 6:00 PM Sunday

SU-F-T-290 : Modeling MLC Penumbra Within the Eclipse TPS - A Major Mode of IMRT QA Failure M. Grams, J. Antolak*, A. Deisher, L. Fong de los Santos

3:00 PM - 6:00 PM Sunday

SU-F-T-291 : Development of Physician-Driven, Clinically-Relevant Pass/fail Criteria for a DVH-Based IMRT Patient Specific QA Program A. Price*, M. Lawrence, S. Das, L. Rankine

3:00 PM - 6:00 PM Sunday

SU-F-T-292 : Imaging and Radiation Oncology Core (IROC) Houston QA Center's Anthropomorphic Phantom Program H. Mehrens*, B. Lewis, C. Lujano, T. Nguyen, N. Hernandez, P. Alvarez, A. Molineu, D. Followill

3:00 PM - 6:00 PM Sunday

SU-F-T-293 : Experimental Comparisons of Ionization Chambers with Different Volumes for CyberKnife Delivery Quality Assurance M. Nakayama*, Y. Munetomo, T. Ogata, K. Uehara, S. Tsudou, H. Nishimura, H. Mayahara, R. Sasaki

3:00 PM - 6:00 PM Sunday

SU-F-T-294 : The Analysis of Gamma Criteria for Delta4 Dosimetry Using Statistical Process Control S. Cho*, S. Ahn, J. Kim, K. Park, W. Choi, H. Lee, E. Lee, J. Yoon, K. Keum

3:00 PM - 6:00 PM Sunday

SU-F-T-295 : MLCs Performance and Patient-Specific IMRT QA Using Log File Analysis A. Osman*, N. Maalej, K. Jayesh, W. Abdel-Rahman

3:00 PM - 6:00 PM Sunday

SU-F-T-296 : Modulated Therapy Down Under: A Survey of IMRT & VMAT Physics Practice in Australia and New Zealand J. Barber*, P. Vial

3:00 PM - 6:00 PM Sunday

SU-F-T-297 : Quality Assurance of Multiple Brain Metastases with Single Isocenter Using Measurement Guided Dose Reconstruction R. Leung*, M. Wong, V. Lee, S. Cheung, K. Lee, G. Law, M. Chan

3:00 PM - 6:00 PM Sunday

SU-F-T-298 : The Impact of Modeling the Treatment Couch On Patient Specific VMAT QA E. Gelover*, A. Dalhart, D. Hyer

3:00 PM - 6:00 PM Sunday

SU-F-T-299 : An Experimental 2D Computed Radiography (CR) Dosimeter for IMRT. Are In-Field Measurements Affected by the Low Energy Photon Overresponse? W. Crijns*, D. Vandenbroucke, P. Leblans, T. Depuydt

3:00 PM - 6:00 PM Sunday

SU-F-T-300 : Impact of Electron Density Modeling of ArcCHECK Cylindricaldiode Array On 3DVH Patient Specific QA Software Tool Analysis P. Patwe*, V. Mhatre, P. Dandekar

3:00 PM - 6:00 PM Sunday

SU-F-T-301 : Planar Dose Pass Rate Inflation Due to the MapCHECK Measurement Uncertainty Function D. Bailey*, J. Spaans, L. Kumaraswamy, M. Podgorsak

3:00 PM - 6:00 PM Sunday

SU-F-T-302 : Implementation of the RadCalc Image Analysis Tool for IMRT QA A. Soldner*, C. Fitzherbert, F. Zhou, C. Hand

3:00 PM - 6:00 PM Sunday

SU-F-T-303 : Quantification of MLC Positioning Accuracy in VMAT Delivery of Head and Neck Cancer Treatment X. Li*, F. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-304 : Complex Multi-PTV Treatment Evaluation Using a Remotely Processed 3D Gel Dosimeter J. Hoisak*, I. Dragojevic, S. Sutlief

3:00 PM - 6:00 PM Sunday

SU-F-T-305 : Clinical Effects of Dosimetric Leaf Gap (DLG) Values Between Matched Varian Truebeam (TB) Linacs D. Mihailidis*, J. Mallah, D. Zhu

3:00 PM - 6:00 PM Sunday

SU-F-T-306 : Validation of Mobius 3D and FX for Elekta Linear Accelerators C. Nelson*, M. Garcia, E. Calderon, S. Kirsner

3:00 PM - 6:00 PM Sunday

SU-F-T-307 : Peripheral Dose Comparison Between Static and Dynamic Jaw Tracking On a High Definition MLC System A. Perez-Andujar, J. Cheung, C. Chuang*

3:00 PM - 6:00 PM Sunday

SU-F-T-308 : Mobius FX Evaluation and Comparison Against a Commercial 4D Detector Array for VMAT Plan QA L. Vazquez Quino*, C. Huerta Hernandez, A. Morrow, B. Massingill, D. Rangaraj

3:00 PM - 6:00 PM Sunday

SU-F-T-309 : Radiochromic Film Calibration Rescaling for Patient-Specific CyberKnife MLC QA T. McCaw*, S. Jang, M. Huq

3:00 PM - 6:00 PM Sunday

SU-F-T-310 : Does a Head-Mounted Ionization Chamber Detect IMRT Errors? S. Wegener*, B. Herzog, O. Sauer

3:00 PM - 6:00 PM Sunday

SU-F-T-311 : Comparison of Measurements From Two Diode Array QA Devices to Deep Point Dose Measurements with Two Treatment Planning Model Settings for Brain VMAT SRT Patient-Specific QA B. Weethee*, J. Cheung, A. Perez-Andujar, A. Sudhyadhom, J. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-312 : Identifying Distinct Radiation Therapy Plan Classes Through Multi-Dimensional Analysis of Plan Complexity Metrics V. Desai*, Z. Labby, W. Culberson

3:00 PM - 6:00 PM Sunday

SU-F-T-313 : Clinical Results of a New Customer Acceptance Test for Elekta VMAT B. Rusk*, J. Fontenot

3:00 PM - 6:00 PM Sunday

SU-F-T-314 : Estimation of Dose Distributions with Different Types of Breast Implants in Various Radiation Treatment Techniques for Breast Cancer M. Lee*, J. Jung, S. Lee, S. Kim, Y. Cho, I. Lee, T. Suh

3:00 PM - 6:00 PM Sunday

SU-F-T-315 : Comparative Studies of Planar Dose with Different Spatial Resolution for Head and Neck IMRT QA T. Hwang*, T. Koo

3:00 PM - 6:00 PM Sunday

SU-F-T-316 : A Model to Deal with Dosimetric and Delivery Uncertainties in Radiotherapy Treatment Planning P. Haering*, C. Lang, M. Splinter

3:00 PM - 6:00 PM Sunday

SU-F-T-317 : Skin Exposure Outside the Treatment Field During Treatment of Breast Cancer with Tri-Co-60 MR-IGRT System J. Park*, J. Kim, S. Park, S. Kim, K. Shin

3:00 PM - 6:00 PM Sunday

SU-F-T-318 : Sensitivity and Stability of OSLDs with Filled Deep Electron/hole Traps Under Pre-Irradiation and Bleaching Conditions J. Kim*, S. Park, H. Lee, H. Kim, C. Choi, J. Park

3:00 PM - 6:00 PM Sunday

SU-F-T-319 : The Impact of Radiation Beam Obliquity and Air Gap Thickness On Optically Stimulated Luminescent in Vivo Dosimetry for Radiation Therapy A. Riegel*, P. Sea, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-320 : Assessing Placement Error of Optically Stimulated Luminescent in Vivo Dosimeters Using Cone-Beam Computed Tomography A. Riegel*, M. Tariq, C. Gomez, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-321 : The Effect of An Electromagnetic Array Used for Patient Localization and Tumor Tracking On OSLD in Vivo Dosimetry A. Rea*, A. Kuruvilla, G. Gill, A. Riegel, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-322 : A Comparison of Two Si Detectors for in Vivo Dosimetry O. Talarico*, J. Bykova, I. Lebedenko

3:00 PM - 6:00 PM Sunday

SU-F-T-323 : A Post-Mastectomy Radiation Therapy Dose Distribution Study Using Nanodots and Films X. Qian*, K. Vaidya, L. Puckett, S. Souri, Y. Chen, Y. Cao, A. Jamshidi, L. Lee, E. Klein, F. Diaz

3:00 PM - 6:00 PM Sunday

SU-F-T-324 : Experimental Measurement of Optically Stimulated Luminescence Detectors in a MR-IGRT Environment Toward Assessing Magnetic Field Effects On These Devices and Their Use as An In-Vivo Dosimeter M. Reilly*, A. Curcuru, S. Yaddanapudi, O. Green

3:00 PM - 6:00 PM Sunday

SU-F-T-325 : On the Use of Bolus in Dosimetry and Dose Reduction for Pacemaker and Defibrillator W. Liu*, D. Zhu, S. Trumpore, R. Kenneth, S. Higgins, R. Nath, Z. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-326 : Diode Array Transmission Detector Systems Evaluation D. Hoffman*, B. Dyer, C. Kumaran Nair, Y. Rong, Y. Katuri, S. Benedict

3:00 PM - 6:00 PM Sunday

SU-F-T-327 : Total Body Irradiation In-Vivo Dose Measurements Using Optically Stimulated Luminescence (OSL) NanoDots and Farmer Type Ion Chamber H. Kaur*, S. Kumar, B. Sarkar, T. Ganesh, U. Giri, K. Jassal, S. Rathinamuthu, G. Gulia, V. Gopal, B. Mohanti, A. Munshi

3:00 PM - 6:00 PM Sunday

SU-F-T-328 : Real-Time in Vivo Dosimetry of Prostate SBRT Boost Treatments Using MOSkin Detectors K. Legge*, D. Cutajar, A. Wilfert, J. Martin, A. Rozenfeld, J. O'Connor, P. Greer

3:00 PM - 6:00 PM Sunday

SU-F-T-329 : Characteristic Study of a Rado-Photoluminescenct Glass Dosimeter with Accumulated Dose D. Kim*, M. Yoon, W. Chung, M. Chung

3:00 PM - 6:00 PM Sunday

SU-F-T-330 : Characterization of the Clinically Released ScandiDos Discover Diode Array for In-Vivo Dose Monitoring D. Saenz*, A. Gutierrez

3:00 PM - 6:00 PM Sunday

SU-F-T-331 : The Effect of Optimization Grid Size On Helical Tomotherapy for Nasopharyngeal Carcinama J. Gu*, Y. Yin, J. Zhu

3:00 PM - 6:00 PM Sunday

SU-F-T-332 : Dose Impact of Rectal Gas On Prostate VMAT M. Sasaki*, H. Ikushima, M. Tominaga, T. Kawashita, T. Kamomae, R. Bando, K. Sakuragawa, M. Oita

3:00 PM - 6:00 PM Sunday

SU-F-T-333 : Deliverability Considerations in Modulated Photon Radiotherapy (XMRT) P. McGeachy*, S. Weppler, J. Villarreal-Barajas, Y. Zinchenko, R. Khan

3:00 PM - 6:00 PM Sunday

SU-F-T-334 : Has IMRT Changed the Impact of MLC Leaf Width ? A Systematic Review and Meta-Analysis of TPS Studies M. Luzzara*, L. Santoro, K. Brown

3:00 PM - 6:00 PM Sunday

SU-F-T-335 : Piecewise Uniform Dose Prescription and Optimization Based On PET/CT Images G. Liu*, J. Liu, S. Zhu, J. Zhang, B. Liang, J. Tian, M. Liu, B. Zeng, Y. Mo, M. Zhou

3:00 PM - 6:00 PM Sunday

SU-F-T-336 : A Quick Auto-Planning (QAP) Method for Patient Intensity Modulated Radiotherapy (IMRT) J. Peng*, Z. Zhang, J. Wang, J. Xie, S. Lu, J. Zhao, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-337 : Accounting for Patient Motion During Volumetric Modulated Ac Therapy (VMAT) Planning for Post Mastectomy Chest Wall Irradiation M. Hernandez*, D. Heins, J. Fontenot

3:00 PM - 6:00 PM Sunday

SU-F-T-338 : Flattening Filter Free Photon Beams Can Achieve the Same Plan Quality as Conventional Flattened Beams for Prostate Radiotherapy M. Kolar*, R. Szwedowski, J. Greskovich, P. Xia

3:00 PM - 6:00 PM Sunday

SU-F-T-339 : Comparison Between Coplanar and Non-Coplanar RapidArc Approach of Hippocampal-Sparing Whole Brain Radiotherapy B. Liu*, J. Kim

3:00 PM - 6:00 PM Sunday

SU-F-T-340 : Direct Editing of Dose Volume Histograms: Algorithms and a Unified Convex Formulation for Treatment Planning with Dose Constraints B. Ungun*, A. Fu, S. Boyd, L. Xing

3:00 PM - 6:00 PM Sunday

SU-F-T-341 : Generate Clinical Acceptable Trade-Off Options in Brain IMRT Planning by Local Multi-Criteria Optimization (MCO) Method L. Yuan*, Y. Ge, Y. Sheng, Q. Wu

3:00 PM - 6:00 PM Sunday

SU-F-T-342 : Dosimetric Constraint Prediction Guided Automatic Mulit-Objective Optimization for Intensity Modulated Radiotherapy T. Song*, Y. Li, L. Zhou

3:00 PM - 6:00 PM Sunday

SU-F-T-343 : Dosimetric Investigation for Fluence Smoothing On VMAT Plans in Monaco for Head - Neck Cancers K. Jassal, B. Sarkar, T. Ganesh*, H. Kaur, U. Giri, B. Mohanti, A. Munshi

3:00 PM - 6:00 PM Sunday

SU-F-T-344 : Commissioning Constant Dose Rate VMAT in the Raystation Treatment Planning System for a Varian Clinac IX J. Pursley*, G. Gueorguiev, H. Prichard, D. Gierga

3:00 PM - 6:00 PM Sunday

SU-F-T-345 : Quasi-Dead Beams: Clinical Relevance and Implications for Automatic Planning R. Price*, I. Veltchev, T. Lin, R. Gleason, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-346 : Dose Mimicking Inverse Planning Based On Helical Delivery Treatment Plans for Head and Neck Patients C. Kumaran Nair*, D. Hoffman, C. Wright, T. Yamamoto, S. Rao, S. Benedict, J. Markham, Y. Rong

3:00 PM - 6:00 PM Sunday

SU-F-T-347 : An Absolute Dose-Volume Constraint Based Deterministic Optimization Framework for Multi-Co60 Source Focused Radiotherapy B. Liang*, B. Liu, Y. Li, B. Guo, X. Xu, R. Wei, F. Zhou, Q. Wu

3:00 PM - 6:00 PM Sunday

SU-F-T-348 : The Impact of Model Library Population On RapidPlan Based Dose-Volume Histograms (DVHs) Prediction for Rectal Cancer Patients Treated with Volumetric-Modulated Radiotherapy (VMAT) K. Li*, L. Zhou, Z. Chen, J. Peng, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-349 : Dosimetric Comparison of Three Different Simultaneous Integrated Boost Irradiation Techniques for Multiple Brain Metastases: Intensity-Modulatedradiotherapy, Hybrid Intensity-Modulated Radiotherapy and Volumetric Modulated Arc Therapy X. Lin*, T. Sun, Y. Yin

3:00 PM - 6:00 PM Sunday

SU-F-T-350 : Continuous Leaf Optimization (CLO) for IMRT Leaf Sequencing T. Long*, M. Chen, S. Jiang, W. Lu

3:00 PM - 6:00 PM Sunday

SU-F-T-351 : Establishing a Workflow for IMRT Pre-Treatment Reviews for NRG-GY006 Clinical Trial T. Giaddui*, N. Li, K. Curry, K. Moore, L. Mell, C. Leath, C. Kunos, Y. Xiao

3:00 PM - 6:00 PM Sunday

SU-F-T-352 : Development of a Knowledge Based Automatic Lung IMRT Planning Algorithm with Non-Coplanar Beams W. Zhu*, Q. Wu, L. Yuan

3:00 PM - 6:00 PM Sunday

SU-F-T-353 : Effect of Planning Parameters On Tomotherapy Plan Quality and Treatment Time R. Thiyagarajan*, K. KP, T. Kataria, A. Nambi Raj, T. Selvan, J. Jose, M. Veni

3:00 PM - 6:00 PM Sunday

SU-F-T-354 : Evaluation of New Features of Two Commercial Automated Treatment Planning Systems X. Han*, W. Hu, X. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-355 : Evaluation of Knowledge-Based Planning Model for the Cervical Cancer Radiotherapy X. Chen*, J. Wang, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-356 : DosimetricComparison of VMAT Vs Step and Shoot IMRT Plans for Stage III Lung CancerPatients with Mediastinal Involvement D. Pearson, J. Bogue*

3:00 PM - 6:00 PM Sunday

SU-F-T-357 : Dosimetric Comparison of Automatic IMRT Planning and Manual IMRT Plan for Head and Neck Cancer X. Chang*, K. Li, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-358 : Is Auto-Planning Useful for Volumetric-Modulated Arc Therapy Planning in Rectal Cancer Radiotherapy? K. Li*, X. Chang, J. Wang, P. Hu, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-359 : Incorporating Dose Volume Histogram Prediction Into Auto-Planning for Volumetric-Modulated Arc Therapy in Rectal Cancer K. Li*, X. Chen, J. Wang, S. Lu, Y. Chen, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-360 : Dosimetric Impacts On the Mucosa and Bone in Radiotherapy with Unflattened Photon Beams J. Chow*, A. Owrangi

3:00 PM - 6:00 PM Sunday

SU-F-T-361 : Dose Enhancement Due to Nanoparticle Addition in Skin Radiotherapy: A Monte Carlo Study Using Kilovoltage Photon Beams X. Zheng, J. Chow*

3:00 PM - 6:00 PM Sunday

SU-F-T-362 : Quantification and Modelling of the Ionization Chamber Simulation Effective Points On Monaco Treatment Planning System R. Zhang, W. Bai*

3:00 PM - 6:00 PM Sunday

SU-F-T-363 : Monte Carlo Dose Verification for Volumetric Modulated Arc Therapy in Multiple Brain Metastases H. Tominaga*, F. Araki

3:00 PM - 6:00 PM Sunday

SU-F-T-364 : Monte Carlo-Dose Verification of Volumetric Modulated Arc Therapy Plans Using AAPM TG-119 Test Patterns R. Onizuka*, F. Araki, T. Ohno, Y. Nakaguchi

3:00 PM - 6:00 PM Sunday

SU-F-T-365 : Clinical Commissioning of the Monaco Treatment Planning System for the Novalis Tx to Deliver VMAT, SRS and SBRT Treatments N. Adnani*

3:00 PM - 6:00 PM Sunday

SU-F-T-366 : Dosimetric Parameters Enhancement of 120-Leaf Millennium MLC Using EGSnrc and IAEA Phase-Space Data K. Haddad*, H. Alopoor

3:00 PM - 6:00 PM Sunday

SU-F-T-367 : Using PRIMO, a PENELOPE-Based Software, to Improve the Small Field Dosimetry of Linear Accelerators H. Benmakhlouf*, L. Brualla, P. Andreo, J. Sempau

3:00 PM - 6:00 PM Sunday

SU-F-T-368 : Improved HPGe Detector Precise Efficiency Calibration with Monte Carlo Simulations and Radioactive Sources Y. Zhai*

3:00 PM - 6:00 PM Sunday

SU-F-T-369 : Validation of Monte-Carlo Beam Model for a Range of Small Fields in Heterogeneous Medium - A Measurement Based Study K. Nithiyanantham*, G. Mani, S. Raju, S. Jain, S. Velliangiri

3:00 PM - 6:00 PM Sunday

SU-F-T-370 : A Fast Monte Carlo Dose Engine for Gamma Knife T. Song*, Y. Li, L. Zhou

3:00 PM - 6:00 PM Sunday

SU-F-T-371 : Development of a Linac Monte Carlo Model to Calculate Surface Dose S. Prajapati*, Y. Yan, K. Gifford

3:00 PM - 6:00 PM Sunday

SU-F-T-372 : Surface and Peripheral Dose in Compensator-Based FFF Beam IMRT D. Zhang, V. Feygelman, E. Moros, K. Latifi, S. Hoffe, J. Frakes, G. Zhang*

3:00 PM - 6:00 PM Sunday

SU-F-T-373 : Monte Carlo Versus Pencil Beam Dose Calculation for Spine SBRT Treatments Using HybridARC and Sliding Windows IMRT C. Venencia*, M. Pino, L. Caussa, A. Molineu, E. Garrigo

3:00 PM - 6:00 PM Sunday

SU-F-T-374 : Dosimetric Effects of Irradiation Through a Bilateral Hip Prosthesis in a MRI Linac M. Wronski*, S. Ahmad, A. Sarfehnia, A. Sahgal, B. Keller

3:00 PM - 6:00 PM Sunday

SU-F-T-375 : Optimization of a New Co-60 Machine for Intensity Modulated Radiation Therapy: A Monte Carlo Characterization Study O. Chibani*, J. Fan, F. Tahanout, A. Eldib, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-376 : The Efficiency of Calculating Photonuclear Reaction On High-Energy Photon Therapy by Monte Carlo Method S. Hirayama*, T. Fujibuchi

3:00 PM - 6:00 PM Sunday

SU-F-T-377 : Monte Carlo Re-Evaluation of Volumetric-Modulated Arc Plans of Advanced Stage Nasopharygeal Cancers Optimized with Convolution-Superposition Algorithm K. Lee*, R. Leung, G. Law, M. Wong, V. Lee, S. Tung, M. Chan

3:00 PM - 6:00 PM Sunday

SU-F-T-378 : Evaluation of Dose-Volume Variability and Parameters Between Prostate IMRT and VMAT Plans J. Chow*, R. Jiang, A. Kiciak

3:00 PM - 6:00 PM Sunday

SU-F-T-379 : Dosimetric Impacts of Topical Agents and Dressings On Skin in Radiotherapy K. Tse, L. Morley, A. Cashell, A. Sperduti, M. McQuestion, J. Chow*

3:00 PM - 6:00 PM Sunday

SU-F-T-380 : Comparing the Effect of Respiration On Dose Distribution Between Conventional Tangent Pair and IMRT Techniques for Adjuvant Radiotherapy in Early Stage Breast Cancer M. Wu*, R. Ramaseshan

3:00 PM - 6:00 PM Sunday

SU-F-T-381 : Fast Calculation of Three-Dimensional Dose Considering MLC Leaf Positional Errors for VMAT Plans Y. Katsuta*, N. Kadoya, E. Shimizu, K. Matsunaga, K. Majima, K. Jingu

3:00 PM - 6:00 PM Sunday

SU-F-T-382 : Volumetric Modulated Arc Therapy (VMAT) Beam Angle Optimization in Pulsed Partial Brain Irradiation (PPBI) for Newly Diagnosed Glioblastoma J. Zhou*, Y. Wang, X. Ding, J. Liang, D. Yan, B. Marples, J. Dilworth

3:00 PM - 6:00 PM Sunday

SU-F-T-383 : Robustness for Patient Setup Error in Total Body Irradiation Using Volumetric Modulated Arc Therapy (VMAT) Y. Takahashi*, H. Tachibana, N. Nakamura

3:00 PM - 6:00 PM Sunday

SU-F-T-384 : Step and Shoot IMRT, VMAT and Autoplan VMAT Nasopharnyx Plan Robustness to Linear Accelerator Delivery Errors E. Pogson*, C. Hansen, S. Blake, S. Arumugam, L. Holloway, D. Thwaites

3:00 PM - 6:00 PM Sunday

SU-F-T-386 : Analysis of Three QA Methods for Predicting Dose Deviation Pass Percentage for Lung SBRT VMAT Plans M. Hardin*, D. To, T. Giaddui, J. Li, Y. Yu, A. Harrison

3:00 PM - 6:00 PM Sunday

SU-F-T-387 : A Novel Optimization Technique for Field in Field (FIF) Chestwall Radiation Therapy Using a Single Plan to Improve Delivery Safety and Treatment Planning Efficiency A. Tabibian*, A. Kim, J. Rose, M. Alvelo, C. Perel, K. Laiken, N. Sheth

3:00 PM - 6:00 PM Sunday

SU-F-T-388 : Comparison of Biophysical Indices in Hippocampal-Avoidance Whole Brain VMAT and IMRT Radiation Therapy Treatment Plans E. Kendall, S. Ahmad, O. Algan, C. Higby, S. Hossain*

3:00 PM - 6:00 PM Sunday

SU-F-T-389 : Validation in 4D Dosimetry Using Dynamic Phantom C. Lin*, T. Huang, C. Lin, H. Nien, P. Tu, L. Lui, C. Wu

3:00 PM - 6:00 PM Sunday

SU-F-T-390 : Dosimetric Impact of Leaf Interdigitation in Prostate Cancer Dynamic IMRT Treatment Planning J. Duan*

3:00 PM - 6:00 PM Sunday

SU-F-T-391 : Comparative Study of Treatment Planning Between IMRT and IMAT for Malignant Pleural Mesothelioma J. Duan*

3:00 PM - 6:00 PM Sunday

SU-F-T-392 : Superior Brainstem and Cochlea Sparing with VMAT for Glioblastoma Multiforme T. Briere*, M. McAleer, L. Levy, J. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-393 : Using Commercially Available Software to Prove That Providing Planning Objectives to the Planner Improves Plan Quality F. Younan*, A. Arnold, S. Patel, E. Clouser

3:00 PM - 6:00 PM Sunday

SU-F-T-394 : Impact of PTV Margins With Taking Into Account Shape Variation On IMRT Plans For Prostate Cancer T. Hirose*, H. Arimura, Y. Shibayama, J. Fukunaga, Y. Umezu, S. Oga, T. Sasaki

3:00 PM - 6:00 PM Sunday

SU-F-T-395 : Evaluation of Best Dosimetry Achievable with VMAT and IMRT Treatment Techniques Targeting Borderline Resectable Pancreatic Cancer K. Harpool*, E. Schnell, T. Herman, S. Ahmad, T. De La Fuente Herman

3:00 PM - 6:00 PM Sunday

SU-F-T-396 : Impact of Shoulder Deformation for Head and Neck VMAT Y. Uchida*, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-397 : Evaluating the Impact of Bladder Filling Status for the Organs at Risk Dose Distribution in Cervical Cancer Patients with Intensity Modulated Radiotherapy J. Zhang*, D. Hong

3:00 PM - 6:00 PM Sunday

SU-F-T-398 : Improving Radiotherapy Treatment Planning Using Dual Energy Computed Tomography Based Tissue Characterization N. Tomic*, H. Bekerat, J. Seuntjens, R. Forghani, F. DeBlois, S. Devic

3:00 PM - 6:00 PM Sunday

SU-F-T-399 : Migration of Treatment Planning Systems Without Beam Data Measurement R. Tolakanahalli*, D. Tewatia

3:00 PM - 6:00 PM Sunday

SU-F-T-400 : Clinical Comparison of An IMRT Plan Computed with Four Algorithms J. Barbiere*, A. Ndlovu

3:00 PM - 6:00 PM Sunday

SU-F-T-401 : Three-Dimensional Conformal Planning Using Low-Segment Multi-Criteria Optimization for Hippocampal Avoidance Whole Brain Radiotherapy X. Zhang*, J. Penagaricano, G. Narayanasamy, R. Griffin, S. Maraboyina, N. Paudel, C. Peter, S. Morrill

3:00 PM - 6:00 PM Sunday

SU-F-T-402 : The Effect of Extremely Narrow MLC Leaf Width On the Plan Quality of VMAT for Prostate Cancer J. Kim*, S. Park, J. Kim, C. Choi, J. Park

3:00 PM - 6:00 PM Sunday

SU-F-T-403 : Impact of Dose Reduction for Simulation CT On Radiation Therapy Treatment Planning Q. Liang*, P. Shah, S. Li, C. Miyamoto

3:00 PM - 6:00 PM Sunday

SU-F-T-404 : Dosimetric Advantages of Flattening Free Beams to Prone Accelerated Partial Breast Irradiation P. Galavis*, D. Barbee, G. Jozsef

3:00 PM - 6:00 PM Sunday

SU-F-T-405 : Development of a Rapid Cardiac Contouring Tool Using Landmark-Driven Modeling C. Pelletier*, E. Mosher, C. Lee, C. Lee, J. Jung

3:00 PM - 6:00 PM Sunday

SU-F-T-406 : Verification of Total Body Irradiation Commissioned MU Lookup Table Accuracy Using Treatment Planning System for Wide Range of Patient Sizes D. Lewis*, P. Chi, R. Tailor, M. Aristophanous, S. Tung

3:00 PM - 6:00 PM Sunday

SU-F-T-407 : Artifact Reduction with Dual Energy Or IMAR: Who's Winning ? E. Elder*, E. Schreibmann, A. Dhabaan

3:00 PM - 6:00 PM Sunday

SU-F-T-408 : On the Determination of Equivalent Squares for Rectangular Small MV Photon Fields O. Sauer*, S. Wegener, F. Exner

3:00 PM - 6:00 PM Sunday

SU-F-T-409 : Modelling of the Magnetic Port in Temporary Breast Tissue Expanders for a Treatment Planning System J. Yoon*, D. Heins, R. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-410 : Investigation of Treatment Planning Accuracy with the Presence of Magnetic Injection Port (breast Tissue Expander) W. Cai*, M. Wagar, Y. Lyatskaya, M. Czerminska

3:00 PM - 6:00 PM Sunday

SU-F-T-411 : A Quantitative Parameter for Treatment Plan Quality A. Licon*, A. Licon, D. Defoor, J. Ford, R. Crownover, Y. Li, C. Ha, T. Eng, W. Jones, P. Mavroidis, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-412 : Spatiotemporal Distribution of Dose Rates in VMAT Plans P. Mackeprang*, W. Volken, D. Terribilini, D. Frauchiger, N. Klippel, K. Zaugg, D. Aebersold, M. Fix, P. Manser

3:00 PM - 6:00 PM Sunday

SU-F-T-413 : Calculation Accuracy of AAA and Acuros Using Cerrobend Blocks for TBI at 400cm N. Lamichhane*, M. Studenski

3:00 PM - 6:00 PM Sunday

SU-F-T-414 : Mathematical Formulation of Gantry Starting Angle for Right Medial Tangential Arc in Left Intact Partial Breast Irradiation Using Volumetric Modulated Arc Therapy (VMAT) U. Giri*, B. Sarkar, H. Kaur, T. Ganesh, A. Munshi, B. Mohanti

3:00 PM - 6:00 PM Sunday

SU-F-T-415 : Differences in Lung Sparing in Deep Inspiration Breath-Hold and Free Breathing Breast Plans Calculated in Pinnacle and Monaco D. Saenz*, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-416 : Dosimetric Comparison of Coplanar and Non-Coplanar IMRT Plans for Peripheral Lung Lesion J. Kang*, S. Zhang, S. Philbrook, S. Paul, B. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-417 : Dosimetric Evaluation of Dose-To-Medium Vs. Dose-To-Water Using Acuros XB for Lung, Spine and Head-And-Neck Plans S. Yu*, D. Rosenzweig, M. Pacella

3:00 PM - 6:00 PM Sunday

SU-F-T-418 : Evaluation of Organs at Risk (OAR) Sparing in Left Breast Irradiation Techniques A. Saini*, C. Hwang, I. Das

3:00 PM - 6:00 PM Sunday

SU-F-T-419 : Evaluation of PlanIQ Feasibility DVH as Planning Objectives for Skull Base SBRT Patients W. Jiang, H. Wang*, P. Chi

3:00 PM - 6:00 PM Sunday

SU-F-T-420 : Dosimetry Comparison of Advanced External Beam Radiation Treatment Modalities to Brachytherapy Treatments in Patients with Cervical Cancer U. Mwidu, S. Devic*, M. Shehadeh, M. AlKafi, R. Mahmood, B. Moftah

3:00 PM - 6:00 PM Sunday

SU-F-T-421 : Dosimetry Change During Radiotherapy and Dosimetry Difference for Rigid and Deformed Registration in the Mid-Thoracic Esophageal Carcinoma C. Tao*, T. Liu, J. Chen, J. Zhu, Y. Yin

3:00 PM - 6:00 PM Sunday

SU-F-T-422 : Detection of Optimal Tangential Partial Arc Span for VMAT Planning in IntactLeft-Breast Treatment U. Giri*, B. Sarkar, A. Munshi, H. Kaur, K. Jassal, S. Rathinamuthu, S. Kumar, T. Ganesh, B. Mohanti

3:00 PM - 6:00 PM Sunday

SU-F-T-423 : Automating Treatment Planning for Cervical Cancer in Low- and Middle- Income Countries K. Kisling*, L. Zhang, J. Yang, A. Jhingran, P. Balter, R. McCarroll, B. Beadle, R. Howell, K. Schmeler, L. Court

3:00 PM - 6:00 PM Sunday

SU-F-T-424 : Mitigation of Increased Surface Dose When Treating Through A Carbon Fiber Couch Top E. Johnson, F. Misgina*

3:00 PM - 6:00 PM Sunday

SU-F-T-425 : Head-Scatter Off-Axis for FFF Megavoltage Photon Beams T. Zhu*, R. Penjweini, A. Dimofte

3:00 PM - 6:00 PM Sunday

SU-F-T-426 : Measurement of Dose Enhancement Due to Backscatter From Modern Dental Materials M. Hurwitz*, T. Tso, S. Lee, E. Rosen, D. Margalit, C. Williams

3:00 PM - 6:00 PM Sunday

SU-F-T-427 : Utilization and Evaluation of Diagnostic CT Imaging with MAR Technique for Radiation Therapy Treatment Planning M. Xu*, R. Foster, H. Parks, M. Pankuch

3:00 PM - 6:00 PM Sunday

SU-F-T-428 : An Optimization-Based Commissioning Tool for Finite Size Pencil Beam Dose Calculations Y. Li*, Z. Tian, T. Song, X. Jia, X. Gu, S. Jiang

3:00 PM - 6:00 PM Sunday

SU-F-T-429 : Craniospinal Irradiation by VMAT Technique: Impact of FFF Beam and High Resolution MLC On Plan Quality T. Ganesh*, B. Sarkar, A. Munshi, B. Mohanti

3:00 PM - 6:00 PM Sunday

SU-F-T-430 : Validation of IBEAM Evo Couch Top for Different Relative Electron Density (RED) Combination During Photon Beam Dose Calculation in Monaco™ Treatment Planning System D. Manigandan*, M. Kumar, P. Mohandas, A. Puri, N. Bhalla

3:00 PM - 6:00 PM Sunday

SU-F-T-431 : Dosimetric Validation of Acuros XB Algorithm for Photon Dose Calculation in Water L. Kumar, G. Yadav, V. Kishore, M. Bhushan, K. Samuvel*, M. Suhail

3:00 PM - 6:00 PM Sunday

SU-F-T-432 : Magnetic Field Dose Effects for Various Radiation Beam Geometries for Patients Treated with Hypofractionated Partial Breast Irradiation S. Lim-Reinders*, B. Keller, C. McCann, A. Sahgal, J. Lee, A. Kim

3:00 PM - 6:00 PM Sunday

SU-F-T-433 : Evaluation of a New Dose Mimicking Application for Clinical Flexibility and Reliability D. Hoffman*, C. Kumaran Nair, C. Wright, T. Yamamoto, J. Mayadev, R. Valicenti, S. Benedict, J. Markham, Y. Rong

3:00 PM - 6:00 PM Sunday

SU-F-T-434 : Development of a Fan-Beam Optical Scanner Using CMOS Array for Small Field Dosimetry E. Brost*, S. Senthilkumar, L. Warmington, Y. Watanabe

3:00 PM - 6:00 PM Sunday

SU-F-T-435 : Helical Tomotherapy for Craniospinal Irradiation: What We Have Learned From a Multi-Institutional Study D. Du*, C. Han, J. Chen, A. Perez-Andujar, B. Lee, T. Kaprealian, D. Low, X. Qi

3:00 PM - 6:00 PM Sunday

SU-F-T-436 : A Method to Evaluate Dosimetric Properties of SFGRT in Eclipse TPS M. Xu*, J. Wei, R. Tobias, J. Dick, S. Crawford, J. Swanson, M. Pankuch

3:00 PM - 6:00 PM Sunday

SU-F-T-437 : 3 Field VMAT Technique for Irradiation of Large Pelvic Tumors V. Stakhursky*

3:00 PM - 6:00 PM Sunday

SU-F-T-438 : A Practical Technique to Avoid the Radioactive Otitis Media in Whole Brain Radiotherapy J. Duan*

3:00 PM - 6:00 PM Sunday

SU-F-T-439 : Proposal of An Index That Identifies Left-Sided Breast/chest-Wall Patients Who Benefit From VMAT Planning H. Xu*

3:00 PM - 6:00 PM Sunday

SU-F-T-440 : The Feasibility Research of Checking Cervical Cancer IMRT Pre-Treatment Dose Verification by Automated Treatment Planning Verification System x. Liu*, Y. Yin, X. Lin

3:00 PM - 6:00 PM Sunday

SU-F-T-441 : Dose Calculation Accuracy in CT Images Reconstructed with Artifact Reduction Algorithm C. Ng*, V. Lee, S. Chan, F. Lee, R. Ngan

3:00 PM - 6:00 PM Sunday

SU-F-T-442 : Dose Distribution Comparison for Post-Laryngectomy Stoma Area Between Conventional AP and VMAT Plans with Or Without Bolus B. Lee, J. Zhang*, M. Leu, J. Cho-Lim, W. Inouye, W. Lorentz, S. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-443 : Quantification of Dosimetric Effects of Dental Metallic Implant On VMAT Plans C. Lin*, Y. Feng, Z. Huang, W. Jiang

3:00 PM - 6:00 PM Sunday

SU-F-T-444 : Quality Improvement Review of Radiation Therapy Treatment Planning in the Presence of Dental Implants H. Parenica*, J. Ford, P. Mavroidis, Y. Li, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-445 : Effect of Triaxial Cables and Microdetectors in Small Field Dosimetry I. Das*, A. Andersen

3:00 PM - 6:00 PM Sunday

SU-F-T-446 : Improving Craniospinal Irradiation Technique Using Volumetric Modulated Arc Therapy (VMAT) Planning and Its Dosimetric Verification X. Yang, M. Tejani, X. Jiang, E. Elder, A. Dhabaan*

3:00 PM - 6:00 PM Sunday

SU-F-T-447 : The Impact of Treatment Planning Methods On RapidPlan Modeling for Rectum Cancer S. Lu*, J. Peng, K. Li, J. Wang, W. Hu

3:00 PM - 6:00 PM Sunday

SU-F-T-448 : Use of Mixed Photon Energy Beam in Volumetric Modulated Arc Therapy (VMAT) Treatment Plan for Prostate Cancer D. Manigandan*, M. Kumar, P. Mohandas, A. Puri, N. Bhalla

3:00 PM - 6:00 PM Sunday

SU-F-T-449 : Dosimetric Comparison of Acuros XB, Adaptive Convolve in Intensity Modulated Radiotherapy for Head and Neck Cancer R. Uehara*, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-450 : The Investigation of Radiotherapy Quality Assurance and Automatic Treatment Planning Based On the Kernel Density Estimation Method J. Fan, J. Fan*, W. Hu, J. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-451 : Doses to Organs-At-Risk in the Presence and Absence of a 1.5 T Magnetic Field for NSCLC Patients Undergoing SABR S. Al-Ward*, A. Kim, C. McCann, M. Ruschin, P. Cheung, A. Sahgal, B. Keller

3:00 PM - 6:00 PM Sunday

SU-F-T-452 : Influence of Dose Calculation Algorithm and Heterogeneity Correction On Risk Categorization of Patients with Cardiac Implanted Electronic Devices Undergoing Radiotherapy P. Iwai*, L. Nadler Lins

3:00 PM - 6:00 PM Sunday

SU-F-T-453 : Improved Head and Neck SBRT Treatment Planning Using PlanIQ H. Wang*, C. Wang, J. Phan, S. Tung, P. Chi

3:00 PM - 6:00 PM Sunday

SU-F-T-454 : Dose-Mass-Histogram Sensitivity to Anatomical Changes During Radiotherapy for HNSCC M. De Ornelas-Couto*, E. Bossart, N. Elsayyad, M. Samuels, C. Takita, I. Mihaylov

3:00 PM - 6:00 PM Sunday

SU-F-T-455 : Is Contouring the Whole Breast Necessary for Two-Field 3D Breast Planning? A. Desai*, E. Ku, D. Fang, C. Lawrence, C. Iannuzzi, R. Feinn, Y. Chen, C. Shi

3:00 PM - 6:00 PM Sunday

SU-F-T-456 : Tomotherapy MLC Synchronization and Leaf Open Time Measurements Using ArcCheck B. Yang*, R. Wong, W. Lam, H. Geng, K. Cheung, S. Yu

3:00 PM - 6:00 PM Sunday

SU-F-T-457 : A Filmless Method for Measurement of Couch Translation Per Gantry Rotation and Couch Speed for Tomotherapy Using ArcCheck B. Yang*, R. Wong, H. Geng, W. Lam, K. Cheung, S. Yu

3:00 PM - 6:00 PM Sunday

SU-F-T-458 : Tracking Trends of TG-142 Parameters Via Analysis of Data Recorded by 2D Chamber Array A. Alexandrian*, C. Kabat, D. Defoor, D. Saenz, K. Rasmussen, N. Kirby, A. Gutierrez, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-459 : ArcCHECK Machine QA : Highly Efficient Quality Assurance Tool for VMAT,SRS & SBRT Linear Accelerator Delivery V. Mhatre*, P. Patwe, P. Dandekar

3:00 PM - 6:00 PM Sunday

SU-F-T-460 : Dosimetric Matching Between Trilogy Tx and TrueBeam STx Y. Choi*, J. Kwak, C. Jeong, S. Ahn, S. Lee, B. Cho

3:00 PM - 6:00 PM Sunday

SU-F-T-461 : Dosimetric Evaluation of Indigenous Farmer Type Chamber FAR65-GB for Reference Dosimetry of FFF MV Photon Beam P. Patwe*, V. Mhatre, P. Dandekar

3:00 PM - 6:00 PM Sunday

SU-F-T-462 : Lessons Learned From a Machine Incident Reporting System S. Sutlief*, J. Hoisak

3:00 PM - 6:00 PM Sunday

SU-F-T-463 : Light-Field Based Dynalog Verification P. Atwal*, R. Ramaseshan

3:00 PM - 6:00 PM Sunday

SU-F-T-464 : Development of a Secondary Check Procedure to Evaluated Flatness and Symmetry Discrepancies Detected During Daily Morning QA M. Wagar*, S. Friesen, Y. Lyatskaya, D. O'Farrell, M. Bhagwat

3:00 PM - 6:00 PM Sunday

SU-F-T-465 : Two Years of Radiotherapy Treatments Analyzed Through MLC Log Files D. Defoor*, C. Kabat, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-466 : An Enhanced Daily Quality Assurance Process for a Six Degrees of Freedom Robotic Table E. Kremmel*, L. Doyle, Y. Yu, A. Harrison

3:00 PM - 6:00 PM Sunday

SU-F-T-467 : A Cross-Checking Approach for Dosimetric Verification of Beam-Matched Elekta Linear Accelerators Y. Zheng*, J. Yuan, P. Geis, V. Colussi, M. Machtay, R. Ellis, B. Wessels

3:00 PM - 6:00 PM Sunday

SU-F-T-468 : Efficient Scanning Data Analysis for TomoTherapy B. Sintay*, K. Pearman, J. Maurer, H. Liu, T. Hayes, D. Wiant

3:00 PM - 6:00 PM Sunday

SU-F-T-469 : A Clinically Observed Discrepancy Between Image-Based and Log-Based MLC Position B. Neal*, M. Ahmed, J. Siebers

3:00 PM - 6:00 PM Sunday

SU-F-T-470 : Implementation of a Daily Quality Assurance Phantom for Six Degrees-Of-Freedom Couch Testing H. Gaballa*, M. O'Brien, A. Riegel, A. Jamshidi, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-471 : Simulated External Beam Delivery Errors Detection with a Large Area Ion Chamber Transmission Detector D. Hoffman*, B. Dyer, C. Kumaran Nair, R. Stern, S. Benedict

3:00 PM - 6:00 PM Sunday

SU-F-T-472 : Validation of Absolute Dose Measurements for MR-IGRT With and Without Magnetic Field O. Green*, H. Li, S. Goddu, S. Mutic, I. Kawrakow

3:00 PM - 6:00 PM Sunday

SU-F-T-473 : Evaluation Of Off-Axis And Peripheral Dose Using Different Detectors B. Ganesan*, A. Prakasarao, T. Palraj, R. Rai, G. Singaravelu

3:00 PM - 6:00 PM Sunday

SU-F-T-474 : Evaluation of Dose Perturbation, Temperature and Sensitivity Variation With Accumulated Dose of MOSFET Detector B. Ganesan*, A. Prakasarao, T. Palraj, R. Rai, G. Singaravelu

3:00 PM - 6:00 PM Sunday

SU-F-T-475 : An Evaluation of the Overlap Between the Acceptance Testing and Commissioning Processes for Conventional Medical Linear Accelerators A. Morrow, D. Rangaraj*, A. Perez-Andujar, N. Krishnamurthy

3:00 PM - 6:00 PM Sunday

SU-F-T-476 : Performance of the AS1200 EPID for Periodic Photon Quality Assurance J. DeMarco*, J. Moran, M. Barnes, P. Greer, G. Kim, B. Fraass, W. Yang, E. Boehnke

3:00 PM - 6:00 PM Sunday

SU-F-T-477 : Investigation of DEFGEL Dosimetry Using MRI C. Matrosic*, A. McMillan, J. Holmes, B. Bednarz, W. Culberson

3:00 PM - 6:00 PM Sunday

SU-F-T-478 : Effect of Deconvolution in Analysis of Mega Voltage Photon Beam Profiles M. Muthukumaran*, D. Manigandan, V. Murali, S. Chitra, S. Vikraman, K. Ganapathy

3:00 PM - 6:00 PM Sunday

SU-F-T-479 : Estimation of the Accuracy in Respiratory-Gated Radiotherapy T. Kurosawa*, H. Tachibana, S. Moriya, S. Miyakawa, M. Sato

3:00 PM - 6:00 PM Sunday

SU-F-T-480 : Evaluation of the Role of Varian Machine Performance Check (MPC) in Our Daily QA Routine B. Juneja*, S. Gao, P. Balter, P. Nitsch

3:00 PM - 6:00 PM Sunday

SU-F-T-481 : Physics Evaluation of a Newly Released InCise™ Multileaf Collimator for CyberKnife M6™ System L. Wang*, E. Chin, A. Lo

3:00 PM - 6:00 PM Sunday

SU-F-T-482 : Using Cerenkov Light Emission for the Measurement of Output Factors at Clinical Linear Accelerators J. Burg*, H. Vorwerk, K. Zink

3:00 PM - 6:00 PM Sunday

SU-F-T-483 : An Investigation Into the Effect of Varying Temperature On PTP Corrections in TG-51 N. Neba, N. Mensah-Brown*, T. Howlin, S. Howard, H. Saleh

3:00 PM - 6:00 PM Sunday

SU-F-T-484 : Initial Evaluation of a Novel 6D QA Phantom (HexaCheck) for Daily 6D Couch Correction Assessment J. Roring*, D. Stanley, N. Papanikolaou, A. Gutierrez

3:00 PM - 6:00 PM Sunday

SU-F-T-485 : Independent Remote Audits for TG51 NonCompliant Photon Beams Performed by the IROC Houston QA Center P. Alvarez*, A. Molineu, J. Lowenstein, P. Taylor, S. Kry, D. Followill

3:00 PM - 6:00 PM Sunday

SU-F-T-486 : A Simple Approach to Performing Light Versus Radiation Field Coincidence Quality Assurance Using An Electronic Portal Imaging Device (EPID) S. Herchko*, G. Ding

3:00 PM - 6:00 PM Sunday

SU-F-T-487 : On-Site Beam Matching of An Elekta Infinity with Agility MLC with An Elekta Versa HD C. Nelson*, M. Garcia, B. Mason, S. Kirsner

3:00 PM - 6:00 PM Sunday

SU-F-T-488 : Comparison of the TG-51 and TG-51 Addendum Calibration Protocols T. McCaw*, M. Hwang, S. Jang, M. Huq

3:00 PM - 6:00 PM Sunday

SU-F-T-489 : 4-Years Experience of QA in TomoTherapy MVCT: What Do We Look Out For? F. Lee*, K. Chan

3:00 PM - 6:00 PM Sunday

SU-F-T-490 : Separating Effects Influencing Detector Response in Small MV Photon Fields S. Wegener*, O. Sauer

3:00 PM - 6:00 PM Sunday

SU-F-T-491 : Photon Beam Matching Analysis at Multiple Sites Up to Twelve Years Post Installation C. Able*, R. Zakikhani, K. Yan, D. Sha, A. Chopra

3:00 PM - 6:00 PM Sunday

SU-F-T-492 : The Impact of Water Temperature On Absolute Dose Calibration N. Islam*, M. Podgorsak

3:00 PM - 6:00 PM Sunday

SU-F-T-493 : An Investigation Into the Feasibility of Using PipsPro Software with Film for Linac QA R. Underwood*

3:00 PM - 6:00 PM Sunday

SU-F-T-494 : A Multi-Institutional Study of Independent Dose Verification Using Golden Beam Data M. Itano*, R. Tachibana, M. Yamashita, H. Shimizu, Y. Sugawara, K. Kotabe, T. Kamima, R. Takahashi, S. Ishibashi, Y. Uchida, T. Yamazaki, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-495 : Method for Simultaneous Commissioning of Multiple Truebeam (TB) Linacs: Small Field Data and the Choice of Dosimetric Lead Gap (DLG) D. Mihailidis*, J. Mallah

3:00 PM - 6:00 PM Sunday

SU-F-T-496 : An Investigation of Two Novel Devices for Testing Linac Clearance During CT Simulation A. Morrow, B. Massingill*

3:00 PM - 6:00 PM Sunday

SU-F-T-497 : Spatiotemporally Optimal, Personalized Prescription Scheme for Glioblastoma Patients Using the Proliferation and Invasion Glioma Model M. Kim*, J. Rockhill, M. Phillips

3:00 PM - 6:00 PM Sunday

SU-F-T-498 : A Comparative Evaluation of 6MV Flatten Beam and Flattening Filter Free Photon Beam in Carcinoma Breast S. Tamilarasu*, M. Swaminathan, S. Sharma, A. Pahuja, A. Dewan

3:00 PM - 6:00 PM Sunday

SU-F-T-499 : Anatomic Features for Selection of Electronic Tissue Compensation Radiotherapy in Early-Stage Breast Cancer Patients After Breast-Conserving Surgery Y. Song*, M. Zhang, N. Yue, L. Gan, X. Chen, T. Zhang, G. Ren

3:00 PM - 6:00 PM Sunday

SU-F-T-500 : The Effectiveness of a Patient Specific Bolus Made by Using Three-Dimensional Printing Technique in Photon Radiotherapy K. Fujimoto*, T. Shiinoki, Y. Yuasa, H. Hanazawa, K. Shibuya

3:00 PM - 6:00 PM Sunday

SU-F-T-501 : Dosimetric Comparison of Single Arc-Per-Beam and Two Arc-Per-Beam VMAT Optimization in the Monaco Treatment Planning System A. Kalet, H. Richardson, N. Cao*, J. Meyer, C. Dempsey

3:00 PM - 6:00 PM Sunday

SU-F-T-502 : FFF Beams, Jaw-Tracking and Treatment Techniques: Out of Field Dose Considerations for Pediatric Radiation Therapy Delivery Y. Ben Bouchta*, A. Bergman

3:00 PM - 6:00 PM Sunday

SU-F-T-503 : Trajectory Modulated Arc Therapy of Intracranial Lesions: Development of a Standardized Path-Based Technique for Fully Dynamic Couch-Gantry Modulated Treatments S. Khan*, E. Chin, K. Otto, L. Xing, D. Hristov, B. Fahimian

3:00 PM - 6:00 PM Sunday

SU-F-T-504 : Non-Divergent Planning Method for Craniospinal Irradiation N. Sperling*, J. Bogue, E. Parsai

3:00 PM - 6:00 PM Sunday

SU-F-T-505 : A Novel Approach for Sparing Critical Organs at Risk for Cancer Patients Undergoing Radiation Oncology Treatments H. Lavvafi*, M. Pourriahi, H. Elahinia, M. Elahinia, E. Parsai

3:00 PM - 6:00 PM Sunday

SU-F-T-506 : Development and Commissioning of the Effective and Efficient Grid Therapy Using High Dose Rate Flattening Filter Free Beam and Multileaf Collimator M. Liu, N. Wen*, C. Beyer, F. Siddiqui, I. Chetty, B. Zhao

3:00 PM - 6:00 PM Sunday

SU-F-T-507 : Modeling Cerenkov Emissions From Medical Linear Accelerators: A Monte Carlo Study Z. Shrock*, M. Oldham, J. Adamson

3:00 PM - 6:00 PM Sunday

SU-F-T-508 : A Collimator-Based 3-Dimensional Grid Therapy Technique in a Small Animal Radiation Research Platform J. Jin*, V. Kong, H. Zhang

3:00 PM - 6:00 PM Sunday

SU-F-T-509 : Investigation Into the Impact of the Linear Accelerator Treatment Table On Skin Dose to Prone Breast Patients K. Pedersen*, J. Irwin, P. Sansourekidou, S. Kriminski, D. Pavord

3:00 PM - 6:00 PM Sunday

SU-F-T-510 : Single Isocenter Radiosurgery for the Simultaneous Treatment of Multiple Brain Metastases: Volumetric Modulated Arc Therapy Or Dynamic Conformal Arc? J. Maurer*, B. Sintay, M. Manning, D. Wiant, H. Liu

3:00 PM - 6:00 PM Sunday

SU-F-T-511 : Feasibility Study of Using Flattening-Filter-Free Photon Beams to Deliver Conventional Flat Beam N. Potter*, S. Lebron, G. Yan, J. Li, C. Liu, B. Lu

3:00 PM - 6:00 PM Sunday

SU-F-T-512 : A Dosimetric Comparison for Palliative Spine Metastasis Treatments: 3-D Vs. Conformal Arc V. Ulizio*, M. Taylor

3:00 PM - 6:00 PM Sunday

SU-F-T-513 : Dosimetric Validation of Spatially Fractionated Radiotherapy Using Gel Dosimetry P. Papanikolaou*, L. Watts, T. Maris, G. Kalaitzakis, E. Pappas, N. Kirby, K. Rasmussen, A. Gutierrez, S. Stathakis, E. Pappas

3:00 PM - 6:00 PM Sunday

SU-F-T-514 : Evaluation of the Accuracy of Free-Breathing and Deep Inspiration Breath-Hold Gated Beam Delivery Using An Elekta Linac M. Jermoumi*, R. Xie, D. Cao, D. Housley, D. Shepard

3:00 PM - 6:00 PM Sunday

SU-F-T-515 : Increased Skin Dose in Supine Craniospinal Irradiation Due to Carbon Fiber Couch and Vacuum Bag Immobilization Device D. Robertson*, Z. Zhao, X. Wang, J. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-516 : Effects of Inter-Fraction Organ Displacement/deformation On the Delivered Doses to the Heart, Esophagus, and Lungs in Patients Receiving Thoracic Radiotherapy J. Hammers*, J. Matney, O. Kaidar-Person, T. Zagar, L. Marks, S. Das, P. Mavroidis

3:00 PM - 6:00 PM Sunday

SU-F-T-517 : Determining the Tissue Equivalence of a Brass Mesh Bolus in a Reconstructed Chest Wall Irradiation E. Shekel*, D. Epstein, D. Levin

3:00 PM - 6:00 PM Sunday

SU-F-T-518 : Development and Characterization of a Gated Treatment System Implemented with An In-House Optical Tracking System and the Elekta Response Interface B. Barraclough*, J. Park, F. Li, B. Lu, J. Li, C. Liu, G. Yan

3:00 PM - 6:00 PM Sunday

SU-F-T-519 : Is Geometry Based Setup Sufficient for All of the Head and Neck Treatment Cases?: A Feasibility Study Towards the Dose Based Setup S. Lee*, S. Chen, B. Zhang, H. Xu, K. Prado, W. D'Souza, B. Yi

3:00 PM - 6:00 PM Sunday

SU-F-T-520 : Dosimetric Comparison of Radiation Treatment Plans for Whole Breast Irradiation Between 3D Conformal in Prone and Supine Positions Vs. VMAT and IMRT in Supine Positions A. Bejarano Buele*, E. Parsai

3:00 PM - 6:00 PM Sunday

SU-F-T-521 : Flattening-Filter-Free Beam Parameters Comparison From Different Linac Machine Types A. Hussain*, B. Moftah

3:00 PM - 6:00 PM Sunday

SU-F-T-522 : Dosimetric Study of Junction Dose in Double Isocenter Flatten and Flatten Filter Free IMRT and VMAT Plan Delivery K. Samuvel*, G. Yadav, M. Bhushan, S. Tamilarasu, L. Kumar, M. Suhail

3:00 PM - 6:00 PM Sunday

SU-F-T-523 : Radiobiological Comparison of Helical Tomotherapy and VMAT in the Treatment of Head and Neck Tumors R. Woods*, P. Mavroidis, M. Lehman-Davis, M. Kostich, T. Cook, B. Chera, S. Das, J. Lian

3:00 PM - 6:00 PM Sunday

SU-F-T-524 : Investigation of the Dosimertric Benefits of Interchangeable Source Size of a Novel Rotating Gamma System A. Eldib*, O. Chibani, L. Chen, J. Li, R. Price, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-525 : Monitordeep-Inspiratory Breathhold with a Laser Sensor for Radiation Therapy of Left Breast Cancer A. Tai*, D. Li, A. Currey, X. Li

3:00 PM - 6:00 PM Sunday

SU-F-T-526 : A Comparative Study On Gating Efficiency of Varian RPM Device and Calypso System P. Ravindran*, W. Wuiann, Y. Lim

3:00 PM - 6:00 PM Sunday

SU-F-T-527 : A Novel Dynamic Multileaf Collimator Leaf-Sequencing Algorithm in Radiation Therapy J. Jing, H. Lin, J. Chow*

3:00 PM - 6:00 PM Sunday

SU-F-T-528 : Relationship Between Tumor Size and Plan Quality Using FFF and Non-FFF Modes in Rapidarc F. Chen*

3:00 PM - 6:00 PM Sunday

SU-F-T-529 : Dosimetric Investigation of a Rotating Gamma Ray System for ImagedGuided Modulated Arc Radiotherapy C. Ma*, O. Chibani, A. Eldib, J. Li, L. Chen

3:00 PM - 6:00 PM Sunday

SU-F-T-530 : Characterization of a 60-Leaf Motorized MLC Designed for Cobalt-60 Units L. Xu*, L. Smith, A. Ciresianu

3:00 PM - 6:00 PM Sunday

SU-F-T-531 : Determination of Site-Specific Dynamic-Jaw Versus Static-Jaw RapidArc Delivery C. Tien*, M. Brewer, M. Studenski

3:00 PM - 6:00 PM Sunday

SU-F-T-532 : Wobble: A New Metric to Quantify Dynamic-Jaw VMAT Delivery C. Tien*, M. Studenski

3:00 PM - 6:00 PM Sunday

SU-F-T-533 : Study of Dosimetric Properties of Cadmium Free Alloy Used in Compensator Based IMRT A. Tyagi*, S. Kaushik, R. Punia, M. Singh

3:00 PM - 6:00 PM Sunday

SU-F-T-534 : Using Daily Images to Verify Dosimetric Advantage of Dual-Isocentric Technique for High-Risk Prostate Cancer Treated with Pelvic Lymph Node T. Cui*, Q. Shang, W. Li, A. Vassil, P. Xia

3:00 PM - 6:00 PM Sunday

SU-F-T-535 : An Android App and Windows Executable with GUI for the Monitor Unit Calculation in KV X-Ray Therapy J. Pearse, J. Chow*

3:00 PM - 6:00 PM Sunday

SU-F-T-536 : Contra-Lateral Breast Study for Prone Versus Supine Patients M. Marrero*, K. Joseph, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-537 : Prone Breast Accelerated Partial Breast Irradiation Using Non-Coplanar Volumetric Arc Therapy G. Beninati*, J. Barbiere, L. Godfrey, A. Ndlovu

3:00 PM - 6:00 PM Sunday

SU-F-T-538 : CyberKnife with MLC for Treatment of Large Volume Tumors: A Feasibility Study T. Bichay*, A. Mayville

3:00 PM - 6:00 PM Sunday

SU-F-T-539 : Dosimetric Comparison of Volumetric Modulated Arc Therapy and Intensity Modulated Radiation Therapy for Whole Brain Hippocampal Sparing Radiation Therapy Treatments E. Kendall*, C. Higby, O. Algan, S. Ahmad, S. Hossain

3:00 PM - 6:00 PM Sunday

SU-F-T-540 : Comprehensive Fluence Delivery Optimization with Multileaf Collimation S. Weppler*, P. McGeachy, J. Villarreal-Barajas, R. Khan

3:00 PM - 6:00 PM Sunday

SU-F-T-541 : Impact of VMAT Dose Calculations with Respiratory Movements in Lung K. Komatsu*, F. Araki, T. Ohno, Y. Shimohigashi

3:00 PM - 6:00 PM Sunday

SU-F-T-542 : Using Calypso Electromagnetic Beacons to Determine When to Modulate and When Not to Modulate SBRT Treatment Plans When Breathing Motion Is Present H. Saleh*, T. Howlin, D. Pokhrel

3:00 PM - 6:00 PM Sunday

SU-F-T-543 : The Impact of Density Overrides in IMRT and VMAT Planning for Lung Cancer Patients Treated SBRT Y. Qin*, I. Chetty

3:00 PM - 6:00 PM Sunday

SU-F-T-544 : Development of a Clinically Feasible Workflow of 4D MRI-Based Treatment Planning for Liver SBRT S. Han*, F. Yin, B. Czito, M. Palta, J. Cai

3:00 PM - 6:00 PM Sunday

SU-F-T-545 : Dosimetric and Radiobiological Evaluation of Dose Calculation Algorithms On Prostate Stereotactic Body Radiotherapy Using Conventional Flattened and Flattening-Filter-Free Beam S. Kang*, T. Suh, J. Chung, K. Eom, J. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-546 : A Radiobiological Comparative Study of Robotic and LINAC-Based Lung SBRT T. Roth*, L. Rankine, E. Schreiber, S. Das, P. Mavroidis

3:00 PM - 6:00 PM Sunday

SU-F-T-547 : Off-Isocenter Winston-Lutz Test for Stereotactic Radiosurgery/stereotactic Body Radiotherapy J. Gao*, X. Liu

3:00 PM - 6:00 PM Sunday

SU-F-T-548 : An Extraction Method for Correction of Detector Volume Effect in Small Field Profile Measurement T. Chiu*, B. Yang, M. Law, W. Lam, C. Kong, H. Geng, K. Cheung, S. Yu

3:00 PM - 6:00 PM Sunday

SU-F-T-549 : Validation of a Method for in Vivo 3D Dose Reconstruction for SBRT Using a New Transmission Detector Y. Nakaguchi*, Y. Shimohigashi, R. Onizuka, T. Ohno

3:00 PM - 6:00 PM Sunday

SU-F-T-550 : Radiochromic Plastic Thin Sheet Dosimeter: Initial Performance K. Jordan*, J. Adamovics

3:00 PM - 6:00 PM Sunday

SU-F-T-551 : Beam Hardening and Attenuation of Photon Beams Using Integral Quality Monitor in Radiotherapy B. Casar*, I. Mendez Carot, P. Peterlin

3:00 PM - 6:00 PM Sunday

SU-F-T-552 : A One-Year Evaluation of the QABeamChecker+ for Use with the CyberKnife System J. Gersh*

3:00 PM - 6:00 PM Sunday

SU-F-T-553 : Sector Output Uniformity of the Perfexion Gamma Knife O. Volotskova*, G. Jozsef, K. Osterman, K. Han, A. Xu

3:00 PM - 6:00 PM Sunday

SU-F-T-554 : Dark Current Effect On CyberKnife Beam Dosimetry H. Kim*, A. Chang

3:00 PM - 6:00 PM Sunday

SU-F-T-555 : Accurate Stereotactic Cone TMRs Converted From PDDs Scanned with Ray Trace H. Li*, H. Zhong, Y. Qin, K. Snyder, I. Chetty, N. Wen

3:00 PM - 6:00 PM Sunday

SU-F-T-556 : A Potential Real Time AQA for Cyberknife Cones and MLC Based Treatments C. Shang, G. Gibbard, J. Cole, A. Schramm, T. Leventouri, S. Khanal*

3:00 PM - 6:00 PM Sunday

SU-F-T-557 : Evaluation of Detector Response in Rectangular Small Field Dosimetry A. Qureshi*, S. Tanny, E. Parsai, N. Sperling

3:00 PM - 6:00 PM Sunday

SU-F-T-558 : ArcCheck for Patient Specific QA in Stereotactic AblativeRadiotherapy P. Ramachandran*

3:00 PM - 6:00 PM Sunday

SU-F-T-559 : High-Resolution Scintillating Fiber Array for In-Vivo Real-Time SRS and SBRT Patient QA T. Knewtson*, S. Pokhrel, S. Loyalka, E. Izaguirre

3:00 PM - 6:00 PM Sunday

SU-F-T-560 : Measurement of Dose Blurring Effect Due to Respiratory Motion for Lung Stereotactic Body Radiation Therapy (SBRT) Using Monte Carlo Based Calculation Algorithm R. Badkul*, D. Pokhrel, T. Ramanjappa, H. Jiang, C. Lominska, F. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-561 : Energy Dependence of a Scintillation Detector O. Volotskova*, A. Xu, G. Jozsef

3:00 PM - 6:00 PM Sunday

SU-F-T-562 : Validation of EPID-Based Dosimetry for FSRS Commissioning Y. Song*, Z. Saleh, C. Obcemea, M. Chan, X. Tang, S. Lim, D. Lovelock, A. Ballangrud, B. Mueller, M. Zinovoy, D. Gelblum, B. Mychalczak, S. Both

3:00 PM - 6:00 PM Sunday

SU-F-T-563 : Delivered Dose Reconstruction of Moving Targets for Gated Volumetric Modulated Arc Therapy (VMAT) H. Chung*, C. Jeong, S. Cho, B. Cho

3:00 PM - 6:00 PM Sunday

SU-F-T-564 : 3 Year Experience of Treatment Plan QualityAssurance for Vero SBRT Patients Z. Su*, M. Mamalui, Z. Li

3:00 PM - 6:00 PM Sunday

SU-F-T-565 : Assessment of Dosimetric Accuracy for a 3D Gel-Based Dosimetry Service B. Rosen*, K. Lam, J. Moran

3:00 PM - 6:00 PM Sunday

SU-F-T-566 : Absolute Film Dosimetry for Stereotactic Radiosurgery and Stereotactic Body Radiotherapy Quality Assurance Using Gafchromic EBT3 Films N. Wen*, S. Lu, Y. Qin, Y. Huang, B. Zhao, C. Liu, I. Chetty

3:00 PM - 6:00 PM Sunday

SU-F-T-567 : Sensitivity and Reproducibility of the Portal Imaging Panel for Routine FFF QC and Patient Plan Dose Measurements A. Willett*, M. Gilmore, C. Rowbottom

3:00 PM - 6:00 PM Sunday

SU-F-T-568 : QA of a Multi-Target Multi-Dose VMAT SRS D. Roa*, A. Gonzales, J. Kuo

3:00 PM - 6:00 PM Sunday

SU-F-T-569 : Implementation of a Patient Specific QA Method Using EBT-XD for CyberKnife SRS/SBRT Plans K. Zerouali*, J. Aubry, R. Doucet

3:00 PM - 6:00 PM Sunday

SU-F-T-570 : Comparison of Synthetic Diamond, Microionization Chamber, and Radiochromic Film for Absolute Dosimetry of VMAT Radiosurgery R. Popple*, X. Wu, J. Kraus, E. Thomas, I. Brezovich

3:00 PM - 6:00 PM Sunday

SU-F-T-571 : Objective Assessment of 3D Dosimetry for Flattened and Flattened Filter Free Stereotactic Rotational Delivery Using 729-Array Detector with Octavius 4D Phantom S. Vikraman, D. Manigandan*, M. Muthukumaran, C. Arun, K. Vikash, K. Sandeep Jain

3:00 PM - 6:00 PM Sunday

SU-F-T-572 : Small Fields Output Factors Measurement and Correction Factor Determination for Several Active and Passive Detectors D. Sharma*, S. Sharma, R. Chowdhary, S. Pilakkal, S. Rashal

3:00 PM - 6:00 PM Sunday

SU-F-T-573 : Evaluation of EBT-XD Radiochromic Films for Verification of SBRT and SRS Treatment Delivery J. Aubry*, K. Zerouali

3:00 PM - 6:00 PM Sunday

SU-F-T-574 : MLC Based SRS Beam Commissioning - Minimum Target Size Investigation R. Zakikhani*, C. Able

3:00 PM - 6:00 PM Sunday

SU-F-T-575 : Verification of a Monte-Carlo Small Field SRS/SBRT Dose Calculation System A. Sudhyadhom*, C. McGuinness, M. Descovich

3:00 PM - 6:00 PM Sunday

SU-F-T-576 : Characterization of Two Dimensional Liquid Filled Detector Array(SRS 1000) in High Precision Cyberknife Robotic Radiosurgery System M. Muthukumaran*, D. Manigandan, V. Murali, S. Vikraman, S. Chitra, K. Ganapathy

3:00 PM - 6:00 PM Sunday

SU-F-T-577 : Comparison of Small Field Dosimetry Measurements in Fields Shaped with Conical Applicators On Two Different Accelerating Systems B. Muir*, M. McEwen, J. Belec, E. Christiansen, E. Vandervoort

3:00 PM - 6:00 PM Sunday

SU-F-T-578 : Characterization of Vidar DosimetryPro Advantage RED Scanner with Application to SBRT and SRS QA M. Dumas*, N. Wen

3:00 PM - 6:00 PM Sunday

SU-F-T-579 : Extrapolation Techniques for Small Field Dosimetry Using Gafchromic EBT3 Film J. Morales*, M. Butson, S. Crowe, R. Hill, I. Das, J. Trapp

3:00 PM - 6:00 PM Sunday

SU-F-T-580 : New Tumor Modeling Using 3D Gel Dosimeter for Brain Stereoctactic Radiotherpy (SRT) K. Chang*, M. Kim, J. Kwak, S. Kim, Y. Ji, B. Cho, S. Yoon, S. Lee

3:00 PM - 6:00 PM Sunday

SU-F-T-581 : The Effect of Scanning Orientation On New EBT-XD Film Using Vidar and Epson Scanners S. Chiu-Tsao*, M. Chan

3:00 PM - 6:00 PM Sunday

SU-F-T-582 : Small Field Dosimetry in Radiosurgery Collimators with a Stealth Chamber J. Azcona*, B. Barbes

3:00 PM - 6:00 PM Sunday

SU-F-T-583 : Comparison of EBT3 Radiochromic Film Densitometry with Narrow Bandwidth LED Source in Point, Slot and Full Aperture Geometries K. Jordan*

3:00 PM - 6:00 PM Sunday

SU-F-T-584 : Investigating Correction Methods for Ion Recombination Effects in OCTAVIUS 1000 SRS Measurements C. Knill*, M. Snyder, J. Rakowski, L. Zhuang, M. Matuszak, J. Burmeister

3:00 PM - 6:00 PM Sunday

SU-F-T-585 : A Novel Phantom for Dosimetric Validation of SBRT for Spinal Lesions K. Papanikolaou*, L. Watts, E. Pappas, T. Maris, C. Ha, N. Kirby, K. Rasmussen, A. Gutierrez, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-586 : Pre-Treatment QA of InCise2 MLC Plans On a Cyberknife-M6 Using the Delta4 System in SBRT D. Schmidhalter*, D. Henzen, M. Malthaner, D. Frauchiger, M. Fix, P. Manser

3:00 PM - 6:00 PM Sunday

SU-F-T-587 : Quality Assurance of Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiation Therapy (SBRT) for Patient Specific Plans: A Comparison Between MATRIXX and Delta4 QA Devices Y. Tsai*, S. Lu, L. Chen, S. Kuo, C. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-588 : Asymmetries in the CyberKnife Iris 2 Collimator G. Cernica*, H. Ji, D. McRae

3:00 PM - 6:00 PM Sunday

SU-F-T-589 : HybridArc Planning Criteria for Brain SRS K. Jeong*, A. Basavatia, D. Mynampati, M. Garg, S. Kalnicki, W. Tome

3:00 PM - 6:00 PM Sunday

SU-F-T-590 : Modeling PTV Dose Fall-Off for Cervical Cancer SBRT Treatment Planning Using VMAT and Step-And-Shoot IMRT A. Brito Delgado*, D. Cohen, T. Eng, A. Gutierrez

3:00 PM - 6:00 PM Sunday

SU-F-T-591 : SBRT Treatment of Multiple Extracranial Oligometastases Using a Single-Isocenter with Distinct Optimizations (SIDO) M. Trager*, J. Adamson, J. Salama

3:00 PM - 6:00 PM Sunday

SU-F-T-592 : A Delivery QA-Free Approach for Adaptive Therapy of Prostate Cancer with Static Intensity Modulated Radiotherapy T. Roth*, J. Dooley, T. Zhu, R. Woods, P. Mavroidis, J. Lian

3:00 PM - 6:00 PM Sunday

SU-F-T-593 : Technical Treatment Accuracy in a Clinic of Fractionated Stereotactic Radiosurgery R. Bisht*, S. Kale, G. Natanasabapathi, M. Singh, D. Agarwal, G. Rath, P. Julka, P. Kumar, S. Thulkar, A. Garg, B. Sharma

3:00 PM - 6:00 PM Sunday

SU-F-T-594 : Dosimetric Impact of Multileaf Collimator Leaf Width On Single and Multiple Isocenter Stereotactactic IMRT Treatment Plans for Four Or More Intracranial Tumors E. Kendall*, O. Algan, I. Ali, J. Arntzen, S. Ahmad, S. Hossain

3:00 PM - 6:00 PM Sunday

SU-F-T-595 : Pitfalls of the Radiosurgery Conformity Index Reported by the BrainLab Treatment Planning System N. Mensah-Brown*, H. Saleh

3:00 PM - 6:00 PM Sunday

SU-F-T-596 : Single Isocenter SRS Plan QA for Multiple Brain Lesion Cases J. Ho*, R. Chin

3:00 PM - 6:00 PM Sunday

SU-F-T-597 : Modeling and Evaluation of RapidPlan for Simultaneous Integrated Boost NPC Cases F. Chang*, P. Wang, P. Tsai, S. Lee, C. Yeh, K. Fan, J. Chang

3:00 PM - 6:00 PM Sunday

SU-F-T-598 : Robotic Radiosurgery System Versus Pencil Beam Scanning Proton Therapy for Definitive Intracranial Treatments M. Lin*, A. Pompos, X. Gu, Y. Yan, R. Abdulrahman, R. Timmerman, S. Jiang

3:00 PM - 6:00 PM Sunday

SU-F-T-599 : Volume-Independent Conformity Index for Stereotactic Brain Tumors S. Kim*, H. Kim, S. Lee, M. Awan, D. Rangaraj, Y. Zheng, J. Monroe, R. Partel, S. Lo, M. Machtay, A. Sloan, J. Sohn

3:00 PM - 6:00 PM Sunday

SU-F-T-600 : Influence of Acuros XB and AAA Dose Calculation Algorithms On Plan Quality Metrics and Normal Lung Doses in Lung SBRT R. Yaparpalvi*, D. Mynampati, H. Kuo, M. Garg, W. Tome, S. Kalnicki

3:00 PM - 6:00 PM Sunday

SU-F-T-601 : Equivalence of CyberKnife and TrueBeam STx for Spine Irradiation J. Herrington*, M. Price, M. Schmidt, J. Brindle, N. Knutson

3:00 PM - 6:00 PM Sunday

SU-F-T-602 : Central Moments to Analyze Dose Distributions in Planning Target Volumes Q. Zhang*, Y. Cao, A. Jamshidi, P. Vigneri, l. Potters, E. Klein

3:00 PM - 6:00 PM Sunday

SU-F-T-603 : Safe Treatment of the Maximum Tolerable Brain Metastases with Gamma Knife in Single Patient Clinical Findings Y. Chen*, C. Li, C. Yang

3:00 PM - 6:00 PM Sunday

SU-F-T-604 : Dosimetric Evaluation of Intracranial Stereotactic Radiotherapy Plans On a LINAC N. Sheth*, A. Tabibian, J. Rose, M. Alvelo, C. Perel, K. Laiken, A. Kim

3:00 PM - 6:00 PM Sunday

SU-F-T-605 : Implementation of the Conformity/Gradient Index (CGI) to Intracranial, Linac-Based Stereotactic Plans to Evaluate Possible Improvements in Treatment Planning A. Sandu*, S. Thompson, A. Ayan, J. Woollard, N. Gupta

3:00 PM - 6:00 PM Sunday

SU-F-T-606 : Monte Carlo Evaluation of Tissue Inhomogeneity Corrections in the Treatment of Liver Cancer Patients Using Stereotactic Body Radiotherapy D. Pokhrel*, S. Sood, R. Badkul, C. McClinton, H. Jiang, H. Saleh, C. Lominska

3:00 PM - 6:00 PM Sunday

SU-F-T-607 : Study of Dose Falloff Slope in RapidArc Planning of Lung SBRT D. Desai*, G. Narayanasamy, S. Srinivasan, H. Elasmar, R. Zwicker, E. Johnson

3:00 PM - 6:00 PM Sunday

SU-F-T-608 : Forward Treatment Planning Techniques On Leksell Gamma Knife for the Normalization Effect Reduction H. Cheng*, D. Pan, J. Tsai

3:00 PM - 6:00 PM Sunday

SU-F-T-609 : Impact of Dosimetric Variation for Prescription Dose Using Analytical Anisotropic Algorithm (AAA) in Lung SBRT D. Kawai*, R. Takahashi, T. Kamima, H. Baba, T. Yamamoto, Y. Kubo, S. Ishibashi, Y. Higuchi, K. Tani, H. Tachibana

3:00 PM - 6:00 PM Sunday

SU-F-T-610 : Comparison of Output Factors for Small Radiation Fields Used in SBRT Treatment R. Gupta*, A. Eldib, J. Li, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-611 : Critical Analysis and Efficacy of Linac Based (Beam Modulator) and Cyberknife Treatment Plans for Acoustic Neuroma/schwannoma K. KP*, T. Kataria, R. Thiyagarajan, T. Selvan, A. Abhishek

3:00 PM - 6:00 PM Sunday

SU-F-T-612 : Investigation of Acoustic Neuroma Planning for Stereotactic Radiosurgery Utilizing Linac-Based Cone Collimators C. Yeboah*, M. Ruschin, Y. Lee, A. Sarfehnia, B. Chugh, S. Myrehaug, M. Tsao, H. Soliman, A. Sahgal

3:00 PM - 6:00 PM Sunday

SU-F-T-613 : Multi-Lesion Cranial SRS VMAT Plan Quality A. Ballangrud*, L. Kuo, L. Happersett, S. Lim, X. Li, K. Beal, Y. Yamada, T. LoSasso, J. Mechalakos

3:00 PM - 6:00 PM Sunday

SU-F-T-614 : Comparison of Pinnacle and Monaco Dose Calculations of SBRT Treatments B. Tuazon*, P. Mavroidis, N. Papanikolaou, S. Stathakis

3:00 PM - 6:00 PM Sunday

SU-F-T-615 : Comparison of Plan Quality for Linac-Based Stereotactic Radiosurgery (SRS) Using Single- and Multi-Isocenter Techniques J. Chang*, A. Wernicke, S. Pannullo

3:00 PM - 6:00 PM Sunday

SU-F-T-616 : Comparison of Different Techniques Using RTOG0631 Guidelines in Spine SBRT H. Acar*, M. Cebe, H. Mabhouti, G. Codel, P. Pacaci, E. Serin, E. Sanli, N. Kucuk, E. Kucukmorkoc, M. Doyuran, D. Canoglu, A. Altinok, H. Caglar Ozkok

3:00 PM - 6:00 PM Sunday

SU-F-T-617 : Remotely Pre-Planned Stereotactic Ablative Radiation Therapy: Validation of Treatment Plan Quality T. Juang*, K. Bush, B. Loo, M. Gensheimer

3:00 PM - 6:00 PM Sunday

SU-F-T-618 : Evaluation of a Mono-Isocentric Treatment Planning Software for Stereotactic Radiosurgery of Multiple Brain Metastases E. Sham*, M. Sattarivand, L. Mulroy, M. Yewondwossen

3:00 PM - 6:00 PM Sunday

SU-F-T-619 : Dose Evaluation of Specific Patient Plans Based On Monte Carlo Algorithm for a CyberKnife Stereotactic Radiosurgery System S. Xu*, J. Piao, Z. Wu, Y. Li, B. Qu, X. Duan, H. Xu, Y. Liu

3:00 PM - 6:00 PM Sunday

SU-F-T-620 : Development of a Convolution/Superposition Dose Engine for CyberKnife System Y. Li*, B. Liu, T. Song, S. Xu, J. Piao, B. Liang, X. Xu, B. Guo, R. Wei, F. Zhou

3:00 PM - 6:00 PM Sunday

SU-F-T-621 : Impact of Vacuum and Treatment Couch On Surface Dose in Stereotactic Body Radiation Therapy With and Without a Flattening Filter H. Lan*, S. Lu, S. Kuo, Y. Tsai, L. Chen, S. Wen, C. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-622 : Comparative Analysis of Pencil Beam and Anisotropic Analytical Algorithm (AAA) for Stereotactic Body Radiation Therapy (SBRT) of Thoracic Spine R. Badkul*, W. Nicolai, D. Pokhrel, T. Ramanjappa, H. Jiang, F. Wang, C. Lominska

3:00 PM - 6:00 PM Sunday

SU-F-T-623 : Dosimetric and Radiobiological Comparison of Conventional and Monte Carlo Treatment Plans of Lung Tumors Using SBRT S. Stathakis*, P. Mavroidis, B. Tuazon, D. Defoor, N. Kirby, N. Papanikolaou

3:00 PM - 6:00 PM Sunday

SU-F-T-624 : Dose Sparing to Normal Brain Tissue for Stereotactic Radiosurgery Utilizing Negative Margins J. Baker*, J. Gibb, S. Ailawadi, A. Hsia, J. Han, J. Kim, Z. Xu, S. Ryu

3:00 PM - 6:00 PM Sunday

SU-F-T-625 : Optimal Treatment Planning Strategy Among Arc Arrangements for Prostate SBRT with VMAT Technique J. Chung*, S. Kang, T. Suh, J. Lee, J. Kim, K. Eom

3:00 PM - 6:00 PM Sunday

SU-F-T-626 : Intracranial SRS Re-Treatment Without Acquisition of New CT Images D. Wiant*, M. Manning, H. Liu, J. Maurer, T. Hayes, B. Sintay

3:00 PM - 6:00 PM Sunday

SU-F-T-627 : A Conformity Index Study of SBRT Plans for Lung Cancer Patient D. Zhu*, G. Fan, C. Peng, C. Austerlitz

3:00 PM - 6:00 PM Sunday

SU-F-T-628 : An Evaluation of Grid Size in Eclipse AcurosXB Dose Calculation Algorithm for SBRT Lung . Pokharel*, S. Rana

3:00 PM - 6:00 PM Sunday

SU-F-T-629 : Effect of Multi-Leaf Collimator (MLC) Width On Plan Quality of Single-Isocenter VMAT Intracranial Stereotactic Radiosurgery for Multiple Metastases J. Kraus*, E. Thomas, X. Wu, J. Fiveash, R. Popple

3:00 PM - 6:00 PM Sunday

SU-F-T-630 : Energy Spectral Study On Lipiodol After Trans-Arterial Chemoembolization Using the Flattened and Unflattened Photon Beams D. Kawahara*, S. Ozawa, A. Saito, T. Nishio, K. Hioki, H. Masuda, T. Okumura, Y. Ochi, T. Nakashima, T. Suzuki, S. Tanaka, Y. Ohno, Y. Nagata

3:00 PM - 6:00 PM Sunday

SU-F-T-631 : Linear Accelerator-Based Frameless Extracranial Radiosurgery for Treatment of Occipital Neuralgia for Non-Surgical Candidates T. Denton*, J. Howe, A. Spalding

3:00 PM - 6:00 PM Sunday

SU-F-T-632 : On the Use of Intensity Modulated Arc Therapy for Thoracic Vertebral Metastases SBRT Treatment D. Pokhrel*, M. Mallory, R. Badkul, H. Jiang, H. Saleh, F. Wang, C. Lominska

3:00 PM - 6:00 PM Sunday

SU-F-T-633 : Cyberknife Boost Versus Conventional Tandem and Ovoid Treatment for Cervical Cancer J. Santoro*, M. Witten, J. Haas

3:00 PM - 6:00 PM Sunday

SU-F-T-634 : Feasibility Study of Respiratory Gated RapidArc SBRT Using a 6MV FFF Photon Beam K. Dou*

3:00 PM - 6:00 PM Sunday

SU-F-T-635 : Lung SBRT: Dosimetric and Treatment Time Comparison of Volumetric-Modulated Arc Therapy and Three-Dimensional Conformal Radiotherapy in Clinically Treated Cases J. Han*, Z. Xu, J. Baker, A. Hsia, S. Ryu

3:00 PM - 6:00 PM Sunday

SU-F-T-636 : Comprehensive Approach to Motion Assessment for Liver and Pancreas SBRT Patients P. Halvorsen*, I. Iftimia, K. Hunter

3:00 PM - 6:00 PM Sunday

SU-F-T-637 : Single-Isocenter Versus Multiple-Isocenter VMAT SRS for Unusual Multiple Metastasis Case with Two Widely Separated Lesions E. Thomas*, R. Popple, J. Fiveash

3:00 PM - 6:00 PM Sunday

SU-F-T-638 : Is There A Need For Immobilization in SRS? K. Masterova*, A. Sethi, D. Anderson, V. Prabhu, I. Rusu, S. Gros, E. Melian

3:00 PM - 6:00 PM Sunday

SU-F-T-639 : Use of a 6D Couch for Real-Time Motion Correction During Frameless Stereotactic Radiosurgery X. Liu*, A. Belcher, R. Wiersma

3:00 PM - 6:00 PM Sunday

SU-F-T-640 : Feasibility of Using a Commercially Available Surface Guided Radiotherapy System with An Open-Face SRS Immobilization System B. Chinsky*, R. Patel, J. Roeske, M. Surucu

3:00 PM - 6:00 PM Sunday

SU-F-T-641 : Comparative Study On Planning and Delivery Efficiency of Volumetric Modulated Arc Therapy Between Varian and Elekta Platforms for SBRT Lung Treatment . Varadhan*, L. Arentsen, S. Way, C. Overbeck, S. Yerich, B. Garrity, M. Fox

3:00 PM - 6:00 PM Sunday

SU-F-T-642 : Sub Millimeter Accurate Setup of More Than Three Vertebrae in Spinal SBRT with 6D Couch X. Wang*, Z. Zhao, J. Yang, J. Yang, M. McAleer, P. Brown, J. Li, A. Ghia

3:00 PM - 6:00 PM Sunday

SU-F-T-643 : Feasibility of Performing Patient Specific VMAT QA On Single Linac for Plans Treated in Beam-Matched Elekta Agility Linacs R. Leung*, V. Lee, S. Cheung, K. Lee, G. Law, M. Wong, M. Chan

3:00 PM - 6:00 PM Sunday

SU-F-T-644 : Reproducibility of Target Position Using Moderate Voluntary Breath-Hold During Liver Stereotactic Ablative Radiotherapy G. Cui*, N. Trakul, E. Chang, A. Shiu

3:00 PM - 6:00 PM Sunday

SU-F-T-645 : To Test Spatial Anddosimetric Accuracy of Small Cranial Target Irradiation Based On 1.5 T MRIscans Using Static Arcs with MLC-Defined Fields I. Brezovich*, X. Wu, R. Popple, S. Shen, R. Cardan, M. Bolding, J. Fiveash, J. Kraus, S. Spencer

3:00 PM - 6:00 PM Sunday

SU-F-T-646 : SBRT Lung: Moving Beyond the 3D Conformal Paradigm with An Elekta VersaHD Accelerator A. Dalhart*, D. Hyer, B. Allen, R. Flynn, H. Johnston

3:00 PM - 6:00 PM Sunday

SU-F-T-647 : Linac-Based Stereotactic Radiosurgery (SRS) in the Treatment of Trigeminal Neuralgia: Detailed Description of SRS Procedural Technique and Reported Clinical Outcomes D. Pokhrel*, S. Sood, R. Badkul, H. Jiang, T. Stepp, P. Camarata, F. Wang

3:00 PM - 6:00 PM Sunday

SU-F-T-648 : Sharpening Dose Fall-Off Via Beam Number Enhancements For Stereotactic Brain Radiosurgery J. Chiu, M. Pierce, S. Braunstein, M. McDermott, P. Sneed, L. Ma*

3:00 PM - 6:00 PM Sunday

SU-F-T-649 : Dosimetric Evaluation of Non-Coplanar Arc Therapy Using a Novel Rotating Gamma Ray System A. Eldib*, O. Chibani, G. Mora, L. Jin, J. Fan, J. Li, I. Veltchev, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-650 : The Comparison of Robotic Partial Breast Stereotactic Irradiation Using MLC Vs. Iris Cone C. Ding*, R. Timmerman, S. Jiang, A. Rahimi

3:00 PM - 6:00 PM Sunday

SU-F-T-651 : Dosimetric Impact of Patient Setup Rotational Errors for Multi-Staged Large AVM Gammaknife Radiosurgery C. Ding*, B. Hrycushko, R. Abdulrahman, L. Whitworth, S. Jiang, R. Timmerman

3:00 PM - 6:00 PM Sunday

SU-F-T-652 : Verification of Inter-Fractional Tumor Motion Using Daily Fiducial Length Measurement for Pancreatic SBRT S. Jang*, M. Hwang, D. Michalski, R. Lalonde, M. Huq

3:00 PM - 6:00 PM Sunday

SU-F-T-653 : Radiation Exposure From Cs-131 Permanent Seed Implants T. Giaddui*, M. Hardin, D. To, E. Kremmel, C. Peng, P. Hann, S. Richardson, Y. Yu, A. Harrison, L. Doyle

3:00 PM - 6:00 PM Sunday

SU-F-T-654 : Pacemaker Dose Estimate Using Optically Stimulated Luminescent Dosimeter for Left Breast Intraoperative Radiation Therapy Y. Chen*, A. Goenka, A. Sharma, L. Wang, Y. Cao, A. Jamshidi

3:00 PM - 6:00 PM Sunday

SU-F-T-655 : Evaluation of Neutron Dose Equivalent Inside of Treatment Vault of Radiotherapy by Photoneutron Production in the Primary Barriers C. Choi*, J. Kim, S. Park, J. Park

3:00 PM - 6:00 PM Sunday

SU-F-T-656 : Monte Carlo Study On Air Activation Around a Medical Electron Linac F. Horst, G. Fehrenbacher, K. Zink*

3:00 PM - 6:00 PM Sunday

SU-F-T-657 : In-Room Neutron Dose From High Energy Photon Beams D. Christ*, G. Ding

3:00 PM - 6:00 PM Sunday

SU-F-T-658 : Out-Of-Field Dose Comparison for TrueBeam Low Energy Beams for Extended Distances: Measurement Vs Monte Carlo Simulation K. Wijesooriya*, N. Liyanage, M. Kaluarachchi, D. Sawkey

3:00 PM - 6:00 PM Sunday

SU-F-T-659 : Nanoparticle-Aided Eye Plaque Radiotherapy J. Chin*, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-660 : Evaluating the Benefit of Using Dual-Function Fiducial Markers for In-Situ Delivery of Radiosenistizing Gold Nanoparticles During Image-Guided Radiotherapy S. AlMansour*, J. Chin, E. Sajo, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-661 : Dependence of Gold Nano Particles Cluster Morphology On Dose Enhancement of Photon Radiation Therapy Apply for Radiation Biology Effect S. Ahn*, K. Chung, H. Park, Y. Han

3:00 PM - 6:00 PM Sunday

SU-F-T-662 : Feasibility Study of Fe3O4/TaOx Nano Particles as a Radiosensitizer for Radiation Therapy S. Ahn*, N. Lee, S. Shin, C. Choi, Y. Han, H. Park, D. Choi, D. Lim

3:00 PM - 6:00 PM Sunday

SU-F-T-663 : Cerenkov Radiation Enhanced Radiotherapy with Titanium Dioxide Nanoparticle: A Monte Carlo Study B. Liu*, Z. Ouyang, E. Sajo, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-664 : The Efficacy of Gold Nanoparticles as Contrast Agents in Mice Y. Yuan*, Y. Zhang, S. Yasmin-Karim, A. Karve, E. Sajo, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-665 : Confocal Microscopy Imaging of Cell Cycle Distribution in Cells Treated with Pegylated Gold Nanoshells D. Sadetaporn*, D. Flint, C. McFadden, A. Asaithamby, G. Sawakuchi

3:00 PM - 6:00 PM Sunday

SU-F-T-666 : Molecular-Targeted Gold Nanorods Enhances the RBE of Proton Therapy A. Khoo, N. Sahoo, S. Krishnan, P. Diagaradjane*

3:00 PM - 6:00 PM Sunday

SU-F-T-667 : Development and Validation of Dose Calculation for An Open-Source KV Treatment Planning System for Small Animal Radiotherapy S. Prajapati*, X. Mo, B. Bednarz, M. Lawless, C. Hammer, R. Flynn, D. Westerly, R. Jeraj, T. Mackie

3:00 PM - 6:00 PM Sunday

SU-F-T-668 : Irradiating Mouse Brain with a Clinical Linear Accelerator C. Perez-Torres*, N. Rancilio

3:00 PM - 6:00 PM Sunday

SU-F-T-669 : Commissioning of An Electronic Brachytherapy System for Targeted Mouse Irradiation W. Culberson*, E. Carchman, J. Micka

3:00 PM - 6:00 PM Sunday

SU-F-T-670 : From the OR to the Radiobiology Lab: The Journey of a Small X-Ray Source J. Lehmann*, M. Barry, R. Jones, M. Fay

3:00 PM - 6:00 PM Sunday

SU-F-T-671 : Effects of Collimator Material On Proton Minibeams E. Lee*, J. Eagle, G. Sandison, N. Cao, R. Stewart, S. Marsh, J. Meyer

3:00 PM - 6:00 PM Sunday

SU-F-T-672 : A Novel Kernel-Based Dose Engine for KeV Photon Beams M. Reinhart*, M. Fast, S. Nill, U. Oelfke

3:00 PM - 6:00 PM Sunday

SU-F-T-673 : Effects of Cardiac Induced Brain Pulsations On Proton Minibeams J. Eagle*, S. Marsh, E. Lee, J. Meyer

3:00 PM - 6:00 PM Sunday

SU-F-T-674 : In Vitro Study of 5-Aminolevulinic Acid-Mediated Photo Dynamic Therapy in Human Cancer Cell Lines D. Cvetkovic*, B. Wang, R. Gupta, C. Ma

3:00 PM - 6:00 PM Sunday

SU-F-T-675 : Down-Regulating the Expression of Cdc42 and Inhibition of Migration of A549 with Combined Treatment of Ionizing Radiation and Sevoflurane Y. Feng*, J. Feng, Z. Huang

3:00 PM - 6:00 PM Sunday

SU-F-T-676 : Measurement of Hydroxyl Radicals in Radiolized Water Systems Z. Ouyang*, G. Strack, E. Sajo, W. Ngwa

3:00 PM - 6:00 PM Sunday

SU-F-T-677 : Synergistic Effect(s) of Clotrimazole On Radiation Cell Survival of A549 Lung Cancer Cells in Glucose Vs. Galactose Media G. Boss*, M. Tambasco, M. Garakani

3:00 PM - 6:00 PM Sunday

SU-F-T-678 : Clotrimazole Sensitizes MCF-7 Breast Cancer Cell Line to Radiation L. Garcia*, M. Tambasco

3:00 PM - 6:00 PM Sunday

SU-F-T-679 : Monte Carlo Simulation On Surface Dose in Preclinical Irradiation Using Monoenergetic Photon Beams A. Vuong, J. Chow*

3:00 PM - 6:00 PM Sunday

SU-F-T-680 : Radiobiological Analysis of the Impact of Daily Patient Deformation and Setup Variations Through the Use of the Cone Beam CT and Deformable Image Registration in Lung Cancer IMRT I. Jurkovic*, S. Stathakis, M. Markovic, N. Papanikolaou, P. Mavroidis

3:00 PM - 6:00 PM Sunday

SU-F-T-681 : Does the Biophysical Modeling for Immunological Aspects in Radiotherapy Precisely Predict Tumor and Normal Tissue Responses? M. Oita*, K. Nakata, M. Sasaki, M. Tominaga, H. Aoyama, H. Honda, Y. Uto

3:00 PM - 6:00 PM Sunday

SU-F-T-682 : In-Vivo Simulation of the Relative Biological Effectiveness in Proton Therapy Using a Monte Carlo Method H. Oesten*, S. Loeck, S. Helmbrecht, F. Tillner, P. Wohlfahrt, J. Schuemann, A. Luehr

3:00 PM - 6:00 PM Sunday

SU-F-T-683 : Cancer Stem Cell Hypothesis and Radiation Treatments E. Fourkal*

3:00 PM - 6:00 PM Sunday

SU-F-T-684 : Analysis of Cherenkov Excitation in Tissue and the Feasibility of Cherenkov Excited Photodynamic Therapy S. Saunders*, A. Glaser, J. Andreozzi, B. Pogue

3:00 PM - 6:00 PM Sunday

SU-F-T-685 : Evaluation of Tumor Hypoxic Fraction Using Serial Volumetric Imaging During Radiation Therapy A. Chvetsov*

3:00 PM - 6:00 PM Sunday

SU-F-T-686 : Considerations About Dose Protraction Factor in TCP Calculations for Prostate VMAT Treatments F. Clemente*, C. Perez-Vara, M. Clavo Herranz

3:00 PM - 6:00 PM Sunday

SU-F-T-687 : Comparison of SPECT/CT-Based Methodologies for Estimating Lung Dose From Y-90 Radioembolization S. Kost*, S. Lin, N. Yu