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41st Annual Meeting of
the American Association of Physicists in Medicine
July 25-29, 1999 Nashville, Tennessee

  Meeting Home
Monday, July 26, 1999 Session Information

Poster Presentations: Therapy Posters
Therapy Poster Session
Monday - Room: Ryman Exhibit Hall
PO-T-1 Experimental Evidence of a Wall Effect in Proton Beam Ionization Chamber Measurements - K. Gall*, W. Newhauser
PO-T-2 A Shutter Assembly Design for a Reactor Based Boron Neutron Capture Therapy Facility - K. Turnbull*, A. Oliver, C. Ramsey
PO-T-3 Absence of Dose Rate Effects on Optical Response of BANG Polymer Gels at Low and Intermediate Dose Rates - K. Shahnazi*, N. Yue, P. Bongiorni, R. Nath, M. Maryanski
PO-T-4 Evaluation of a p-type Scanning Diode Detector - A. Saini*, T. Zhu, I. Rebo, J. Shi, A. Saini
PO-T-5 Monte Carlo Simulations of Miniphantom Measurements - J. McDonough*, B. Bjarngard
PO-T-6 Dose Correlation Of A MOSFET Dosimeter For In-vivo Skin Dosimetry In Dynamic And Omni Wedged 6MV/18MV Photon Beams - L. Tao*, A. Kalend
PO-T-7 The Spectral Dependence of the Polarity Effect in Electron Dosimetry - S. Szendy*, C. Ramsey, A. Oliver
PO-T-8 Effects of Buildup Thickness and Material to Diode Detector SSD Dependence - J. Shi*, W. Simon, L. Ding, D. Saini, S. Rose
PO-T-9 Detecting Bending Magnet Drifts on Electron Beams with a Commercially Available Energy-monitor - B. Moftah*, M. Evans, M. Olivares, E. Podgorsak
PO-T-10 Sensitivity Of BANG® Polymer Gels To Light, Ultrasound And Shock Waves: Possible New Applications In Medicine - M. Maryanski*
PO-T-11 Dwell Time Effects of Laser Scanner Induced Polymerization of Gaf-Chromic Film - B. Hasson*, P. Sullivan, C. Grossman, L. Simpson
PO-T-12 Radiotherapy Characterization of Pelletized TLD-100 - F. Deibel*, M. Weinhous
PO-T-13 Positioning Accuracy and Reproducibility of a Passive Infrared Marker System - R. Boone*, T. Solberg
PO-T-14 Air Kerma Calibration Factors and kch Values for PTW Soft X-ray, NACP and Roos Ionization Chambers at Very Low X-ray Energies (0.035 mm- 1.0 mm Al HVL) - N. Ipe*, K. Rosser, C. Moretti, J. Manning, M. Palmer
PO-T-15 CVD Diamonds as Dosimeter for Radiotherapy - An Assessment - R. Iyer*, C. Buttar, J. Conway
PO-T-16 Design Of An Attenuating Source Holder For HDR 192Ir Brachytherapy Calibrations. - S. Pai*, L. Reinstein
PO-T-17 Investigation of HU-Electron Density Relationship for 3D Conformal Treatment Planning - J. Wang*, A. Osian, N. Ikoro, D. Nori
PO-T-18 Evaluation of a High Contrast Film/Cassette Verification System - A. Ho*, F. Yin, A. Ratkewicz
PO-T-19 An 8-channel Detector for an Ir-192 Brachytherapy Source-Based Computed Tomography Scanner - A. Berndt*, S. Rathee, D. Rickey, J. Bews
PO-T-20 Normal-Tissue Effects of Irradiations with Beams of Photons, Protons, and Iron Ions - J. Dicello*, F. Cucinotta, D. Gridley, S. Howard, J. Mann, G. Novak, R. Ricart-Arbona, J. Strandberg, M. Vazquez, J. Williams, Y. Zhang, H. Zhou, D. Huso
PO-T-21 Depth Dose Characterization of Narrow Proton Beams - S. Vatnitsky*, D. Miller, M. Moyers
PO-T-22 Comparisons of Dosimetry for Boron Neutron Capture Therapy - M. Khan, L. Miller*, G. Kabalka, T. Nichols, K. Hubner, G. Smith
PO-T-23 General Tissue Response Model - P. Stavrev*, A. Niemierko, N. Stavreva, M. Goitein
PO-T-24 Changes in Proton Radiosurgery Dosimetry at the Harvard Cyclotron Laboratory - K. Myers*, W. Newhauser, A. Smith
PO-T-25 Calibration of Gammacell Irradiator for Irradiation of Radiotherapy Polymer Dosimetry Gel - T. Kron, C. Baldock*, P. Murry, R. Fitchew, M. Murry, P. Back
PO-T-26 Effects of Glass and Backscatter on Measurement of Absorbed Dose in Radiotherapy Polymer Gel Dosimetry - C. Baldock*, G. Michael, C. Baldock, C. Henderson, P. Murry, K. Nitschke
PO-T-27 Radiobiology in the Modern Treatment Planning System: the Fourth Dimension - B. Nelms*, T. Wolf
PO-T-28 An Absorbed Dose Model for Range-Modulated Proton Beams and Applications in Quality Assurance - W. Newhauser*, H. Paganetti, A. Smith, S. Rosenthal, H. Kooy 1, S. Schmidt2
PO-T-29 4mm Helmet Factor for Elekta Gamma Knife - S. Goetsch*
PO-T-30 Quantification of Intraoperative Displacement of Deep Structures in Neurosurgery Using 3D Ultrasound - A. Hartov*, S. Eisner, D. Roberts, K. Paulsen, L. Platenik, M. Miga
PO-T-31 Automated Repositioning for Body Stereotactic Radiosurgery - S. Benedict*, R. Cardinale, R. Zwicker, E. Bump, R. Mohan
PO-T-32 Angular Measurement of the Emitted Radiation Spectrum from the Leksell Gamma Knife - R. Drzymala*, J. Sohn, C. Guo, L. Sobotka
PO-T-33 Automatic Verification of the Isocenter in Stereotactic Radiosurgery - E. Bolla*, C. Cauzzo, G. Gennaro, L. Riccardi, F. Simonato, R. Zandonà, R. Fabbris
PO-T-34 Clinical Implementation and Verification of a Fractionated Stereotactic Cranial Immobilization System - M. Plunkett*, W. Shea, J. Lukens, G. Gade, R. Mackintosh
PO-T-35 Comparison of an In-house Developed Treatment Planning System, a Commercially Available System and a BETA-version for Linac Based Radiosurgery - D. Verellen*, N. Linthout
PO-T-36 I. Setting Standards for Relocatable Stereotactic Head Frames: Proposals - A. Lightstone*, R. Ramani
PO-T-37 A Method for Accurate Conversion of PDD to TMR Values - M. Essers*, L. van Battum, P. Storchi
PO-T-38 Setup Verification in Linac-Based Radiosurgery - T. Falco*, M. Lachaine, B. Poffenbarger, E. Podgorsak, G. Fallone
PO-T-39 The Use of Laitinen Stereoadapter and Glad-X Relocatable Frame in Stereotactic Radiotherapy - N. Ikoro*, H. Ashamalla, D. Gideo-Addeo, M. Cosma, P. Ross
PO-T-40 Iterative Least Squares Approach to Optimizing Large-Scale Treatment Plans - D. Shepard*, G. Olivera, P. Reckerdt, J. Aldridge, E. Fitchard, T. Mackie
PO-T-42 Reduction of Small Bowel, Bladder and Rectal Doses using IMRT in Patients Receiving Whole Pelvic Radiation Therapy - J. Roeske*, J. Kung, A. Mundt
PO-T-43 Stochastic Beam Weight Optimization: The Differential Evolution Algorithm - J. Deasy*
PO-T-44 Comparison of Algorithms for Multileaf Collimator Field Segmentation - W. Que*
PO-T-45 Dose Measurement-based Tomographic Intensity Modulated Radiation Therapy: Theory and Numerical Results - M. Braunstein, R. Levine*, Y. Lo, M. Urie, R. Levine
PO-T-46 Estimation Theory for Therapeutic Treatment Plan Optimization - L. Xing, J. Li, A. Pugachev*, A. Boyer
PO-T-47 Intensity Modulated Radiation Therapy with Tomographic Reconstruction: MLC Leaf Width and Beam Number Influence on Dose Conformation to Cranial Targets - M. Braunstein*, R. Levine, Y. Lo, M. Urie
PO-T-48 An Analysis of Speed and Precision in IMRT Delivery - P. Geis*, R. Hill, S. Kalnicki, A. Wu
PO-T-49 Evaluation of a Prototype Inverse Treatment Planning System - K. Spencer*, C. Ramsey, A. Oliver
PO-T-50 A Modified Clarkson Integration (MCI) for IMRT - J. Kung*, G. Chen
PO-T-51 Conformal Field Margins in Multifield, Axial, Coplanar Treatment Planning - T. Grigereit*, E. Klein, W. Harms, S. Goddu, S. Mutic, D. Low, J. Purdy
PO-T-52 Dosimetric Capabilities of an Electronic Portal Imaging Device - R. Zwicker*, B. Libby, R. Mohan
PO-T-53 Optimization Techniques for Intensity Modulated Stereotactic Radiotherapy - S. Simons*, J. Figura
PO-T-54 Dynamic Multileaf-Diaphragm Sequencing with Adjacency Gap Constraints - H. Kuterdem*, P. Cho, R. Marks II
PO-T-55 Optimal Constraint Dose of an Overlap Region Between Target and Critical Structures for Inverse Treatment Planning - Y. Watanabe*
PO-T-56 A Leaf Sequence QA Tool for IMRT Beam Delivery - Y. Chen*, C. Ma
PO-T-57 Verification of Field Placement for Rotational IMRT - M. Huq, G. Bednarz*, M. Hossain, J. Galvin, W. Curran, Jr.
PO-T-58 Whole-Body Equivalent Dose Estimates in Tomotherapy - D. Verellen*, N. Linthout
PO-T-59 A Leaf Sequencing Algorithm for Dynamic Multileaf Collimators - J. Ting*, E. Butker, E. Elder, M. Mitchum, S. Ghavidel, L. Davis
PO-T-60 A Method of Generating Multiple Static Fields and Delivering Intensity Modulated Radiotherapy - Y. Wu*, D. Yan, M. Sharpe, B. Miller, J. Wong
PO-T-61 Non-Parallel Plane Intensity Modulated RadioSurgery (IMRS) - B. Salter Jr.*, J. Hevezi
PO-T-64 IMRT Dose Delivery Error from Radiation Field Offset (RFO) Inaccuracy - J. Kung*, G. Chen
PO-T-65 IMRT Dose Verification Using MOSFET Dosimeters - M. Kleiman, S. McGinley, A. Jones*
PO-T-66 Leaf Sequencing For Fluence Modulated Radiation Therapy - N. Agazaryan*, T. Solberg, A. Arellano, T. Paul
PO-T-67 The Effects of Beamlet Sizes on IMRT Optimization - B. Yi*, K. Forster, A. Boyer
PO-T-68 Use of Dynamic Multileaf Collimator as a Dose Compensator - J. Park*, C. Chen, C. Liu, S. Anghaie, J. Palta
PO-T-70 A Modified Method of Planning and Delivery for IMRT Treatments - N. Dogan*, L. Leybovich, A. Sethi, M. Krasin, B. Emami
PO-T-71 Clinical Implementation of Simple Intensity Modulation without Inverse Treatment Planning Software - C. Ramsey*, K. Spencer, I. Cordrey, A. Oliver
PO-T-72 Dosimetric Apsects of Intensity Modulation in Serial Tomotherapy - P. Xia*, G. Wong, B. Curran, L. Verhey
PO-T-73 Enhanced Dynamic Wedge Beam Delivery with Dynamic Multileaf Collimator System - C. Chen*, J. Park, C. Liu, S. Anghaie, J. Palta
PO-T-75 Modulation of Multi leaf Collimator Dose Undulation - I. Das*, R. Mitra
PO-T-76 Copper-62 an Alternative Isotope for Intravascular Brachytherapy - R. Chan*, N. Yang
PO-T-77 A Moving-Frame Method in HDR Brachytherapy - S. Li*, T. DeWeese, D. Lee, M. Wharam, T. Frankel, J. Dicello
PO-T-78 Multigroup Discrete Ordinates Modeling of I125 6702 Seed Dose Distributions Using a Broad Energy-Group, Cross-Section Representation - G. Daskalov*, R. Baker, J. Williamson, D. Rogers
PO-T-79 Calculation of Beta-ray Dose Distributions from Ophthalmic Applicators - W. Cross*, J. Hokkanen, H. Jarvinen, F. Mourtada, P. Sipila, C. Soares, S. Vynckier
PO-T-80 Improved Dose Uniformity for Radioactive Stents in Endovascular Brachytherapy - H. Amols*
PO-T-81 Calculation of Dose Distribution near an Innovative Concentric Balloon Cather for Endovascular Brachytherapy - Z. Xu*, L. Reinstein, G. Yang, P. Cole
PO-T-82 Dose Uniformity Along and Away From the Axis of a Vascular Lumen Undergoing Intravascular Brachytherapy Using Various Radioactive Sources - N. Yue*, R. Nath, K. Roberts
PO-T-83 Effects of Applicator Spatial Placement Variations on Cumulative Dose to Point A in the Treatment of Cervical Cancer with 3 HDR Intracavitary Brachytherapy Treatments - J. Rahimian*, Y. Qian, R. Kagan
PO-T-84 In-vivo Dosimetry for Quality Control in Conformal Brachytherapy for Cervical Carcinoma. - A. Riet*, L. Elders, C. Hoekstra, V. Althof, E. Vonk, A. Mak
PO-T-85 Enhancement of Tumor Coverage by Interstitial Support to the Intracavitary HDR Brachytherapy for Cervical Carcinoma. - A. Riet*, C. Hoekstra, T. Kuipers, L. Elders, E. Vonk, A. Mak
PO-T-86 Treatment-plan Optimization for Soft-tissue Sarcomas Using a Genetic Algorithm - A. Fung*, K. Alektiar, D. Silvern, M. Zaider
PO-T-87 Effects of Vessel Curvature on Dose Distribution in Intravascular Brachytherapy For Various Radionuclides - N. Yue*, K. Roberts, R. Nath
PO-T-88 Radiochromic Film Dosimetry of a High Dose Rate Beta Source for Intravascular Brachytherapy - D. Duggan*, C. Coffey, J. Lobdell, M. Schell
PO-T-89 Stent Effect on Beta Dose Distributions for Intravascular Brachytherapy - P. Fan*, S. Chiu-Tsao, H. Tsao, J. Pisch, L. Harrison
PO-T-90 Assessment of EGS4 for Sr-Y 90 Intravascular Brachytherapy Dosimetry - R. Wang*, X. Li, C. Yu
PO-T-91 Distributions of Tissue Volume Dose Resulting from Small Compared to Large Dwell Source Stepping in the Rings and Tandems of Gynecological HDR Brachytherapy - G. King*, S. Nagappan, R. Mogus, A. Kalend
PO-T-92 Dosimetric Analysis of Permanent Prostate Implant with I-125 and Pd-103 - Y. Cao*, X. Wang, L. Potters, C. Ling
PO-T-93 Permanent 125I Prostate Implants: Post-implant Dosimetry Based on Images Acquired on a Single Day Can Only be Approximate - R. Taschereau*, A. Martin, J. Pouliot
PO-T-94 An Organ DVH Based Optimization Algorithm for Ultrasound Guided Prostate Implants - Y. Chen*, L. Xing
PO-T-95 New Nomogram for Peripheral Loading of Prostate Brachytherapy Using Iodine-125 Seeds - A. Wu*, M. Johnson, C. Lee, D. Brown, P. Geis, S. Kalnicki
PO-T-96 The Relationship Between Volume and Dose Conformity Quantifiers in Prostate Brachytherapy - W. Bice*, J. Prete, D. Dubois, B. Prestidge
PO-T-97 Analysis of the Quality of Prostate Implants Using Dose Volume Histograms and Homogeneity Indexes - N. Dogan*, N. Mohideen, L. Leybovich, A. Sethi
PO-T-98 Use of Nomogram vs. Pre-planning to Determine Seed Activities for Prostate Seed Implants - X. Wang*, J. Zhang, L. Potters, C. Ling
PO-T-99 The Dependence of Prostate Post-implant Dosimetric Quality on CT Volume Determination - W. Butler*, G. Merrick, J. Lief, A. Dorsey
PO-T-100 The Effect of Prostate Swelling on the Dosimetric Parameters Proposed by TG-64 - D. Mellenberg*, G. Weidner, S. Hedican
PO-T-101 Determination of the Urethral Dose in Prostate Brachytherapy when the Urethra is not Visualized in the Post-Implant CT Scan - F. Waterman*, A. Dicker
PO-T-102 Seed Stability in the Prostate/Periprostatic Region Following Brachytherapy - W. Butler*, G. Merrick, M. Benson, A. Dorsey, J. Lief
PO-T-103 Concurrent Optimization of Seed Loading and Minimization of Number of Needles in Prostate Seed Implant by Simulated Annealing - A. de la Zerda*
PO-T-104 Automated Seed Recognition for Intraoperative Prostate Brachytherapy Dosimetry - P. Cho*, B. Adams
PO-T-105 Measurement and Monte Carlo Calculation of Dosimetric Parameters on the Transverse Axis of a New Pd-103 Source - Z. Li*, J. Fan, J. Palta
PO-T-106 Experimental Measurement of Dosimetric Parameters on the Transverse Axis of a New I-125 Source - Z. Li*, J. Fan, J. Palta
PO-T-107 Experimental Verification of XVMC -- A Fast Monte Carlo Code for Photon Beam Treatment Planning - M. Fippel*, W. Laub, F. Nuesslin
PO-T-108 Implementation of Enhanced Dynamic Wedge Calculations in a Treatment Planning System Based on Primary and Scatter Components - M. Czerminska*, L. Chin
PO-T-109 Effects of CT Number Conversion on Monte Carlo Dose Calculations - T. Pawlicki*, K. Ayyangar, C. Ma
PO-T-110 Photon Dose Calculation Performances of a 3D Treatment Planning System Compared to the Monte Carlo Code - P. Francescon, C. Cavedon*, S. Reccanello, S. Cora
PO-T-111 Implementation of the Electron Pencil-Beam Redefinition Algorithm into a 3D Treatment Planning System - R. Boyd*, G. Starkschall, K. Hogstrom
PO-T-112 A "Multigrid" Method for Accelerating Three-Dimensional Photon Dose Calculations - M. Wiesmeyer*, M. Miften
PO-T-113 MCDOSE - A Dose Calculation Tool for Radiotherapy Treatment Planning - C. Ma*, T. Pawlicki, J. Li, S. Jiang, J. Deng, A. Kapur, E. Mok, G. Luxton, A. Boyer
PO-T-115 The Effect of Monte Carlo Noise on Radiotherapy Treatment Plan Evaluation - P. Keall*, J. Siebers, B. Libby, R. Mohan, R. Jeraj
PO-T-116 Integration of a Standard Monte Carlo Code into a Commercial Treatment Planning System - M. Woo, B. Faddegon*
PO-T-117 Photon Beam Commissioning Methodology for a Commercial 3-D Radiation Treatment Planning System - G. Starkschall*, R. Steadham, S. Ahmad, I. Rosen
PO-T-118 Limitations of Convolution Methods for Modeling Geometric Uncertainties in Radiation Treatment - T. Craig, J. Van Dyk, E. Wong*, V. Moiseenko, J. Kempe, J. Battista
PO-T-119 Designing Compensators Using the Pinnacle3 Treatment Planning System Accounting for Scatter from Compensators - H. Liu*, C. Baird, R. Popple, N. Zacharopoulos, I. Rosen
PO-T-120 An Algorithm for Calculating Isodose Distributions and Wedge Factors for Enhanced Dynamic Wedge Symmetric and Asymmetric Fields - M. Miften*, M. Wiesmeyer, K. Takahashi, S. Broad
PO-T-121 Study of the Efficiency of Auto-Sequencing Technique in Treating the Prostate Cancer Using the Siemens (TM) Primus (TM) Multi-leaf collimators - C. Yang*
PO-T-122 A Modified Rotational Hemi-body Electron Therapy Technique - A. Sethi*, L. Leybovich, G. Glasgow, I. Ouyang, N. Dogan, H. Forgione
PO-T-123 A Method of Verification for Craniospinal Irradiation - Y. Lo*, W. Lutz, M. Anderson
PO-T-124 Additional TBI Patient Dose from Neutrons Due to the Photon Beam Intercepting Steel As Opposed to Concrete - M. Gillin*, R. Zhu, D. Grimm, F. Lopez, J. Rownd
PO-T-125 Beam Compensation for Total Body Irradiation by Dynamic Delivery - A. Kassaee*, J. McDonough, M. Altschuler
PO-T-126 A Conformal Dynamic Arc Technique for the Treatment of Pleural Mesothelioma with On-Line Epid Verification. - B. Lachance*, R. Blais, J. Roy, É. Vigneault, J. Pouliot
PO-T-127 Seven-Field Breast Irradiation Using Mixed Electron-Photon Beams to Treat the Internal Mammary Chain. - B. Lachance*, M. Larochelle, N. Varfalvy, D. Tremblay
PO-T-128 Improved dose homogeneity in Scalp Irradiation using a Single Setup Point and Different Energy Electron Beams - R. Yaparpalvi*, D. Fontenla, J. Beitler
PO-T-129 TBI - A Review of Techniques - M. Urie*, L. Tisch, A. Nevelsky, F. Laurie, T. Fitzgerald
PO-T-130 Virtual Wedge Factors and Clinical Implementation of the Siemens Virtual Wedge - X. Zhu*, M. Gillin, F. Lopez, D. Grimm, J. Rownd
PO-T-131 Elimination of Field Size Dependence of Enhanced Dynamic Wedge Factors - A. Sethi*, L. Leybovich, N. Dogan, G. Glasgow
PO-T-132 A Function Relating Portal Film Dose Distribution to Compensator Thickness Map for Parallel Opposed Fields - M. Loyd*
PO-T-133 The Use of Multiple Static Fields to Smooth MLC Field Edges - M. Svatos*, L. Verhey, T. Steinberg
PO-T-134 The Application of Simple Techniques makes the Elekta 40x40cm Multileaf Collimator as accurate but more versatile than a Mini Multileaf Collimator. - M. Welch*
PO-T-135 Implementation of a Siemens Virtual Wedge on RenderPlan Planning System - M. Bank*
PO-T-136 Comparison of MLC (VARIAN) vs. Cerrobend Block in Clinical Setup - Y. Qian*, P. Chow, L. Maslack, L. Lin, S. She, R. Kagan
PO-T-137 Comparison of 3D Compensation versus Conventional Wedge Techniques : Potential of a New Compensating Device - C. Bletscher*, R. Wallace, J. DeMarco, C. Kimme-Smith
PO-T-138 EDW Fields- A New Tecnnique for Data Collection - D. Bhaduri*, B. Anderson, C. Bockelman
PO-T-140 Calculate Effective Wedge Factors of Any Wedge Angles of Enhanced Dynamic Wedge from a Measured 60 Degree Wedge Factor - M. Lii*, L. Dong, A. Shiu
PO-T-141 A Comparison of the AAPM TG51 Protocol and the IAEA Absorbed-Dose-to Water Based Code of Practice for Dosimetry Calibration of High Energy Photon Beams - M. Huq*, M. Hossain, P. Andreo**, M. Huq
PO-T-142 Film Dosimetry for Enhanced Dynamic Wedges - L. Dong*, J. Lii, A. Shiu, H. Liu
PO-T-143 A Comparison of Single Focused vs Double Focused MLC Field Blocking - J. Killoran*, J. Giraud, L. Chin
PO-T-144 An Evaluation of the Recommendations of the AAPM TG51 Protocol: Photon Beam Calibration and Comparison with the TG21 Protocol - M. Huq*
PO-T-145 Comparison between TG-51 and TG-21: The Results of TG-51 Beta Testing - J. Lowenstein*, S. Cho, P. Balter, W. Hanson
PO-T-146 A Single Diode Detector for In Vivo Dosimetry of Photon Beams - V. Colussi*, C. Sibata, A. Beddar, Q. Wu, T. Kinsella
PO-T-147 Profiles of Head-Scatter Photons and Contaminating Electrons Measured with Radiographic Film - B. Arjomandy*, B. Bjangard
PO-T-148 Transmission and Dose Perturbations with High-Z Materials in Clinical Electron Beams - I. Das*, R. Mitra, C. Cheng
PO-T-149 Analysis of Dose Distributions in Six Dual Field Total Skin Electron Therapy - K. Yenice*, A. Sabbas
PO-T-150 Design and Implementation of a New Device for The Integral Measurement of Total Source-on Time for a High Dose Rate (HDR) Remote Afterloading Treatment - E. Parsai*, K. Brown, K. Ayyangar, J. Feldmeier
PO-T-151 A 16-field Technique for Total Skin Electron Irradiation - C. Cheng*, R. Wallace, J. Gorman
PO-T-152 Evaluation of Clinical Use of Siemens Variable Electron Applicator - A. Thavendrarajah*
PO-T-153 Investigation of Patient Position Comparing Two Immobilization Devices with the Use of Port Film/Digitally Reconstructed Radiograph for Brain Tumors - L. Butler*, Y. Zhu, W. Gaber, T. Merchant
PO-T-154 Partial Bolus Verification of Patient Dose via MOSFET Dosimeters - D. Lightfoot*
PO-T-155 Mixed-beam 3-D conformal therapy: Dosimetric verification - P. Halvorsen*, S. Parker
PO-T-156 Assessment of the Accuracy of Monitor Unit Calculations in Three-Dimensional Treatment Planning - M. Vossler*, J. Bayouth
PO-T-157 New Treatment Table Panel with Reduced Skin Dose - F. Wittkamper*, M. Dwarswaard, W. Balk
PO-T-158 Measurement of Filtered Percentage Depth Dose for Higher Energy Photon Beams - W. Kopecky, N. Nelson, F. Abrath, J. Gu*, R. McDonald, J. Dawson
PO-T-159 The Dose Distribution of Stomal Boosts - E. Yorke*, A. Kassaee, T. Doyle, M. Altschuler, D. Rosenthal
PO-T-160 Characterize Patient-specific Target Motion During The External Beam Treatment of Prostate Cancer - K. Kota*, D. Yan, J. Lebesque, M. VanHerk, J. Wong
PO-T-161 Optimization of Treatment Planning Using a Fuzzy Weight Function - F. Yin*, R. Li
PO-T-162 Optimization of Importance Factors in Inverse Planning - L. Xing*, J. Li, A. Boyer
PO-T-163 Clinical Implementation of Wedge Filter Optimization in 3D Radiotherapy Treatment Planning - J. Li*, L. Xing, A. Boyer
PO-T-164 Adaptive Grid Generation for Automated Treatment Planning: Regions of Interest and Pencil Beam Gridding - J. Deasy*
PO-T-165 Evaluation of a Totally Integrated CT-Simulator-Treatment Planning System for Accuracy and Efficiency - E. Butker*, D. Helton, E. Elder, J. Ting, L. Davis
PO-T-166 Improved Dose Homogeneity in Opposed Beams Irradiation Using an Additional Static Field - J. Pérez-Calatayud*, F. Lliso, V. Carmona, A. González, J. Ruíz, I. Petschen, F. Ballester
PO-T-168 Determination of Clinically Relevant Setup Error for Daily Electronic Portal Imaging Analysis - F. Van den Heuvel*, I. Han, A. Strowbridge, S. Chungbin, D. Ragan
PO-T-169 Evaluation of Radiation Guided Gene Therapy Using Pinhole Imaging and Region-of-Interest (ROI) Analysis - C. Scarfone*, L. Geng, G. Holburn, A. Brill, J. Dugger, J. Patton, M. Sandler, D. Hallahan, C. Scarfone
PO-T-170 Characteristics and Role of a Prototype Amorphous Silicon Array EPID in Breathing Synchronized Radiotherapy - H. Kubo*, E. Shapiro, E. Seppi
PO-T-171 In-depth Testing of Information Management Systems Prior to Operation - K. Turnbull*, K. Spencer, C. Ramsey, A. Oliver
PO-T-172 Protocol Pre-Approval Processes for Radiotherapy Treatment on Clinical Trials; The RPC Experience - D. Davis*, D. Followill, R. Tailor, J. Lowenstein, I. Harris, J. Roll, W. Hanson
PO-T-173 Techniques for DRR Optimization in Virtual Simulation - J. Killoran*, J. Giraud, E. Mannarino, L. Chin
PO-T-174 External Beam Guided Drug Delivery using Radiolabeled Microspheres: Evaluation with Nuclear Medicine and Autoradiography Region-of-Interest (ROI) Techniques - C. Scarfone*, L. Geng, A. Brill, G. Holburn, J. Clanton, J. Dugger, J. Patton, M. Sandler, D. Hallahan, C. Scarfone
PO-T-175 Field and Patient Setup Analysis Using Electronic Portal Imaging on a Cobalt Unit - P. Vos*, R. de Vries1, A. Vosspoel2
PO-T-176 A 3-D Image Registration Toolkit for Radiation Therapy Treatment Planning - Y. Hu*, A. Erdi, C. Chui
PO-T-177 A Collimation Design for Double-exposure Portal Imaging - P. Greer*, T. van Doorn
PO-T-178 A Robust Algorithm for Spikes Elimination from 2D CCD Low-level Lightoutput Measurements in the Presence of Ionizing Radiation Field - S. Devic*, A. Kirov, J. Williamson, Z. Piao, J. Dempsey
PO-T-179 Analysis of Radiological Physics Center Remote Tools Program Data - J. BenComo*, J. Lowenstein, D. Davis, C. Davis, W. Hanson
PO-T-180 A Comparison of the Accuracy of Automated Versus Manual Patient Setup Adjustment in Radiotherapy - K. Brock*, J. Balter, D. McShan
PO-T-181 Film Dosimetry Application in Photodynamic Therapy (PDT): A Practical Method to Test Beam Uniformity from Microlens - V. Colussi*, C. Sibata, T. Kinsella
PO-T-182 Dynamic Motion Phantoms for the Evaluation of Video Based Respiratory Gating Systems - C. Ramsey*, I. Cordrey, K. Spencer, A. Oliver
PO-T-183 Quality Assurance of Dynamic Aarc Multileaf Collimator - B. Yi*, L. Xing, A. Boyer
PO-T-184 A Level 3 Dosimetric Intercomparison for Australasia: A Pilot Study - T. Kron*, B. Stephen, M. Roff, C. Hamilton, J. Denham
PO-T-185 Quality Assurance Tools for Frequent, Speedy Assessment of a large field Multileaf Collimators. - M. Welch*
PO-T-187 Verification of Intensity Modulated Beams in Radiotherapy - M. Fix*, P. Manser, H. Keller, E. Born, D. Vetterli, R. Mini, P. Ruegsegger
PO-T-188 Quality Assurance of Head-Scatter Factor for Square and Rectangular Collimator Settings - T. Zhu*, B. Bjarngard, Y. Xiao
PO-T-189 Commissioning of ADAC Pinnacle 3 Treatment Planning System: Inhomogeneity Correction - J. Wang*, S. Chiu-Tsao, L. Wang, L. Harrison
PO-T-190 Acrylic Test Phantom for Measuring PDD and Beam Profiles - T. Steinberg*, S. Szeglin, F. Hu
PO-T-191 A Two Dimensional Decision Making Model After Comparing Portal and Reference Images - T. Kron*, C. Hamilton, C. Wratten, J. Denham
PO-T-192 Algorithms for the Verification of 3D Conformal Prostate Treatment using EPID - L. Girouard*, E. Vigneault, J. Pouliot
PO-T-193 Commissioning Procedures for Monte Carlo Dose Calculation Algorithms - P. Keall*, J. Siebers, B. Libby, R. Mohan
PO-T-194 Five Years Follow-up of a Quality Assurance Program in Virtual Simulation - J. Pérez-Calatayud*, F. Lliso, V. Carmona, A. González, J. Ruíz, I. Petschen, F. Ballester
PO-T-195 RPC Experience with TLD for Output and Energy Monitoring of Radiation-therapy Beams - R. Tailor*, J. Aguirre, W. Hanson
PO-T-196 An Anthropomorphic Head Phantom for Remote Monitoring of Stereotactic Radiosurgery at Multiple Institutions - P. Balter*, M. Stovall, W. Hanson
PO-T-197 Commissioning of the Brachytherapy Module on Theraplan Plus - M. MacPherson*, J. Cygler, D. Wilkins
PO-T-198 Error Analysis of In-Vivo Diode Dosimetry in a Small Clinic - A. Thompson*, T. Zhu
PO-T-199 Quality Assurance of Beam Accuracy for Leksell Gamma Unit - C. Yu*, G. Luxton, Z. Petrovich
PO-T-200 Converting Absorbed Dose to Medium to Absorbed Dose to Water for Monte Carlo Based Dose Calculations - J. Siebers*, P. Keall, R. Mohan
PO-T-202 A Modified Discrete Ordinates Algorithm for Photon Transport Applications - J. DeMarco*, A. Mesa, R. Cook
PO-T-203 Analytic Modeling of Treatment Head Scatter Factor - G. Desobry*, T. Zhu
PO-T-204 Dose Calculations of a 6MV Photon Beam Using a Finite-Size Pencil Beam Model - W. Hinson*, J. Bourland
PO-T-205 Photon Beam Spectra from Measured Depth Dose in the Buildup Region - M. Altschuler*, P. Bloch, B. Bjarngard, A. Kassaee, J. McDonough
PO-T-206 Proton Transport Based on a Generalization of Fermi-Eyges Theory and Energy Spectrum Evolution - A. Chvetsov*, G. Sandison
PO-T-207 Spectral Measurements of a 6MV Photon Beam for Finite-size Pencil Beam Dose Calculations - W. Hinson*, J. Bourland
PO-T-208 Evaluation of Output Factors for Customized Electron Cones - B. Ahluwalia*, A. Khatib
PO-T-209 An Iterative EPID Calibration Procedure for Dosimetric Verification that Considers the EPID Scattering Factor - J. Chang*, G. Mageras
PO-T-210 Effects of the Shape of Photon Energy Spectrum on the Beam Data in Water - T. Zhu*, B. Bjarngard, J. McDonough, P. Bloch
PO-T-211 Monte Carlo Calculation of Dose Rate Distributions Around the Amersham CDCS-M Cs-137 Source - E. Casal, J. Lluch, F. Ballester*, J. Pérez-Calatayud, F. Lliso
PO-T-212 Monte Carlo Study of Virtual Versus Physical Wedges for Photon Beams of 6-10 MV - F. Verhaegen*, I. Das
PO-T-213 Monte-Carlo Simulations of Dose Rate Distributions Around Three Amersham LDR Small Cs-137 Sources - J. Lluch, F. Ballester*, J. Pérez-Calatayud, F. Lliso, E. Casal
PO-T-214 Clinical Implementation of a Two-Source Model for Calculation of Electron Relative Output Factors - C. Lewis*, J. Chen, K. Spyksma
PO-T-215 A Deterministic Electron Transport Algorithm for Radiation Dosimetry - A. Mesa*, J. DeMarco, R. Cook
PO-T-216 A Fast Model for the Prediction of the PDD/TPR of Irregular Shaped Fields From Just a Few Physical Parameters - Y. Xiao*, M. Huq, M. Hossain
PO-T-217 Derivation of Anisotropy Functions and Dose-rate Constants for 192Ir Brachytherapy Sources Using Primary and Scatter Dose Separation - K. Russell*, A. Ahnesjö
PO-T-218 An Optimization Method to Derive Extra-focal Source from Collimator Scattering Factor (Sc) - J. Chang*
PO-T-219 Calculation of Portal Dose Distributions for Verification in Radiotherapy - M. Fix*, M. Sabel, H. Keller, E. Born, D. Vetterli, R. Mini, P. Ruegsegger
PO-T-220 Monte Carlo Simulations for Electron Backscattering in Lead - M. Serrano, F. Ballester*, J. Pérez-Calatayud, V. Carmona
PO-T-221 A Simple Electron Beam Simulation Program - D. Wilson*
PO-T-222 Effects of Beam Divergence, Fluence Distribution, and Beam Quality on the Phantom-scatter Factor - L. Wang*, T. Zhu, B. Bjarngard
PO-T-223 Longitudinal and Lateral Scatter Dose Buildup in 60Co beams - R. Mooij*
PO-T-224 Clinical Electron Beam Dosimetry - Comparison Between TG-21 and TG-51 Dosimetry Protocols - J. Cygler*, C. Kwok, G. Ding
PO-T-225 Comparison of Results in Absorbed Dose Calibration Between Using AAPM TG-21 and TG-51 Protocols - Electron Beams - G. Ding1*, M. Yu1, J. Cygler2, G. Ding
PO-T-226 Comparison of the Photoneutron Spectra and Fluence Rates Generated from a High Energy Linear Accelerator using Hard and Dynamic Wedges - E. Thomas*, C. Ramsey
PO-T-227 Determination of the Bremsstrahlung Spectra of High-Energy Medical Linear Accelerators using a Simpson Iteration Technique - R. Alhakeem*, L. Miller, C. Ramsey, A. Oliver
PO-T-228 Effective Source Distances for Physical and Dynamic Wedged Fields - M. Johnson*, S. Sharma
PO-T-229 Evaluation of a 3D Treatment Planning System for Dose Computations in the Kilovoltage Energy Range - P. Alaei*, B. Gerbi, R. Geise