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40th Annual Meeting of
the American Association of Physicists in Medicine
August 9-13, 1998 San Antonio, Texas

  Meeting Home
Tuesday, August 11, 1998 Session Information

Poster Presentations Therapy Posters
Therapy and General Physics Poster Session
Tuesday 12:00 PM - 1:30 PM Room: South Banquet Hall
PO-2 Chemical Dosimetry in the Near Zone of Cesium and Iridium Sources Contained in Nylon Catheters - B. Hasson*, J. Ford, C. Hand, E. Jensen, H. Perera, L. Simpson
PO-3 Clinical Implementation of CT Based Simulation in High Dose Rate Brachytherapy - R. Alecu*, M. Alecu, R. Gilbert, M. Hebert, T. Ochran
PO-4 Clinical Implementation of High Dose Rate Interstitial Brachytherapy for Prostate Cancer - M. Alecu*, M. Kerley, R. Alecu, T. Ochran
PO-5 Combined Use Of Transverse And Scout Computed Tomography Scans To Localize Radioactive Sources in Interstitial Brachytherapy Implants - N. Yue*, Z. Chen, J. Bond, R. Nath
PO-6 CT-Based Prostate Post-Implant Dosimetry Using Multiple-Planar Reconstructed Images - Z. Li*, W. Tome`, S. Kim, J. Palta
PO-7 Fast Hierarchical Algorithm for Brachytherapy Calculations Using Monte Carlo Simulations - X. Fang, Z. Li*, J. Palta, S. Ranka, S. Sahni
PO-8 Feasibility of ultrasound (US) based post implant dosimetric verification of US guided I-125 permanent prostate implants. - C. Kota*, M. Yudelev, P. Littrup, D. Wood, J. Forman
PO-9 New NIST Air-Kerma-Strength Standards for 125I and 103Pd Brachytherapy Seeds - S. Seltzer*, P. Lamperti, R. Loevinger, C. Soares
PO-10 Photon Dose Kernels for Brachytherapy Source Convolution Dose Calculation - J. Modrick*, B. Thomadsen, T. Mackie
PO-11 Source Identification on Post-Implant CT's and Its Influence on Dose Volume Histograms - A. deGuzman*, S. Robertson
PO-12 The X-Ray CT Based 3-D High Dose Rate Brachytherapy - G. Arora*, G. Rao, D. Barefield
PO-13 A Commercial Implementation of TG43 Dose Calculation Algorithm - N. Dogan*, M. Balbes, M. Fatyga, J. Williamson
PO-15 Morbidity Of Pd-103 Compared to I-125 Implants - J. Rankin*, D. Zellmer, M. Baikadi, J. Gilbert
PO-16 Database Management for Prostate Implants - E. Hendee*, B. Paliwal, M. Ritter, B. Thomadsen, K. Brandt
PO-17 Determination of Prostate Volume Variation due to Post-Implant Edema from Seed Distribution of Prostate Implants - J. Pouliot*, M. Vachon, R. Taschereau, J. Roy
PO-18 Automatic Optimization of Dose Distribution using Fast Simulated Annealing for the Planning of Prostate Implants - J. Pouliot*, R. Taschereau, D. Tremblay, J. Roy, C. Côté
PO-19 CT-based Dosimetry Calculations for Permanent Prostate Implants - J. Smathers, C. Burnison, Q. Ncube, T. Solberg, J. DeMarco*
PO-20 Peripheral vs. Modified Uniform Seed Loading in Prostate Brachytherapy - W. Butler*, A. Dorsey, G. Merrick
PO-21 Isotope Choice and the Effect of Edema on Prostate Brachytherapy Dosimetry - W. Butler*, A. Dorsey, G. Merrick
PO-22 A New Genetic Algorithm Technique in Optimization of Prostate Seed Implants - G. Yang*, L. Reinstein, S. Pai, Z. Xu
PO-23 CT Scanning for Post-Operation Seed Localization in Permanent Prostate Implants - E. Lief*, B. Davis, K. Wallner
PO-24 On the conversion of dosimetric data among phantom materials for 125I and 103Pd brachytherapy sources using build-up factor methods. - R. Wallace*
PO-25 CT-based Treatment Planning for a Syed Implant - J. Roeske*, K. Farrey, J. Rotmensch, S. Waggoner, A. Mundt
PO-26 Non-TG43 dosimetric representations for a new 125I brachytherapy source. - R. Wallace*, J. Fan
PO-27 Implementation of tg-43 dosimetry recommendations for i-125 prostate implants: experience with 50 patients - S. Deore*, D. Fontenla, C. Biancia, P. Lai, B. Vikram
PO-29 Implementation of AAPM TG-43 protocol with anisotropic correction for I-125 prostate implants - X. Ren*, Y. Pipman, J. Pollack, J. Roy
PO-30 A New Seed Handling Tool For Prostate Brachytherapy - X. Shi*
PO-31 Dosimetric Effects of Needle Divergence in Prostate Seed Implant Using I-125 and Pd-103 Radioactive Seeds - Z. Chen*, R. Nath
PO-32 Tissue Attenuation Factors for Model 6711 I-125 Seed - S. Rustgi*
PO-33 Dosimetric Considerations of using Cylinders and HDR in Irradiation of Vaginal Cuff - C. Saw, K. Krishna*, L. Korb
PO-34 CT-based Monte Carlo dosimetry for an I-125 nasopharynx applicator - E. Furhang*, L. Anderson, C. Chui, Y. Erdi
PO-35 CT and MRI Derived Source Localization Error in a Custom Prostate Phantom Using Automated Image Fusion - D. Dubois*, W. Bice, B. Prestidge, J. Prete
PO-36 Dosimetric Evaluation of a Catheter-based Brachytherapy Using Ir-192 in Patients With Coronary Restenosis - S. Jani*, G. Huppe, R. Lepage, V. Massullo, P. Tripuraneni, P. Teirstein
PO-37 Dose Enhancement Due to Intravasular Stints and Brachytherapy Source Walls - D. Zellmer*+*, I. Das*
PO-38 Comparison of Directly Measured Re-188 Balloon Dosimetry with Calculations Based on a New NIST Activity Calibration - A. Li*, B. Zimmerman, F. Knapp, H. Amols, J. Whiting
PO-39 Selection and Characteristics of Detectors for Beta Source Dosimetry - E. Hendee*, B. Thomadsen, B. Paliwal
PO-40 Tubular Beta-Sources for Endovascular Irradiations: Design and Dosimetry - W. Schmidt*, K. Mueck, D. Lehmann, R. Hawliczek
PO-41 NIST Radioactivity Standards for Intravascular Brachytherapy - B. Coursey*, L. Karam, M. Unterweger, B. Zimmerman, R. Colle
PO-42 An iterative method using radiochromic film for determining the source activity distribution of endovascular beta sources - Z. Xu*, L. Reinstein, G. Yang, S. Pai
PO-43 EGS4 Monte-Carlo calculations of 3D dose distributions surrounding a HDR 192Ir source and a 32P stent - N. Reynaert*, H. Thierens, F. Verhaegen, Y. Taeymans, M. Van Eyckeren
PO-44 ESE In Continuous vs. Pulse Fluoroscopy Procedures: A Four Year Study - S. Brahmavar*, A. Tidwell, M. LaFrance, C. Miller
PO-45 In situ imaging of DNA double strand break damage and repair induced by microbeam irradiation - B. Nelms*, R. Maser, J. MacKay, M. Lagally, J. Petrini
PO-46 An investigation of the effects of multileaf collimator leaf position accuracy upon intensity modulated beams - G. Budgell*, J. Mott, P. Williams
PO-47 Towards Three Dimensional Power Deposition Control in Superficial Thermoradiotherapy - E. Moros*, X. Fan, W. Straube, R. Myerson
PO-48 Quantitative Film Dosimetry with Scanning Laser Film Digitizers - J. Dempsey*, D. Low, A. Kirov, J. Williamson
PO-49 Dosimetric Characteristics of P-type QED diode detectors used for in-vivo Dosimetry - A. Saini*
PO-50 Stopping power ratios for clinical electron beam detectors - A. Kapur*, C. Ma
PO-51 Modeling of optical density dependence on post-irradiation temperature for radiochromic film (MD-55-2) - L. Reinstein*, G. Gluckman, A. Meek
PO-52 New supersensitive polymer gel dosimeter - M. Maryanski*, M. Barry
PO-53 Dosimetry of superficial x-ray beams with parallel-plate ionization chambers - M. Gosselin, M. Evans, E. Podgorsak*
PO-54 Comparison of Uniformity of Dose Response of Double-Layer Radiochromic Films (MD-55-2) Measured at 5 Institutions - A. Niroomand-Rad*, S. Chiu-Tsao, C. Soares, A. Meigooni, A. Kirov
PO-55 Plastic Scintillator Response to Low-Energy Photons - J. Williamson*, J. Dempsey, A. Kirov, W. Binns, H. Nilsson
PO-56 X-ray Spectra Estimation Using Attenuation Measurements from 25 kVp to 18 MV - M. Blough, J. Terry, D. Chen, N. Lee, S. Zhang, W. McDavid, R. Waggener*
PO-57 The Precision of Pion Measurements for Linear Accelerators - R. Tailor*, W. Hanson, D. Followill
PO-58 Comparison of Two Types of Commercial Diode Detector For in-vivo Dosimetry of High Energy Photon Beams - X. Zhu*
PO-59 Factors to be considered when using Helium-Neon laser scanning systems to perform routine analysis of therapy QC films. - E. Schuele, S. Szeglin*
PO-60 An Iso-energetic Flattening Filter for Total Skin Electron Beam Radiotherapy - X. Wu*, Z. Chen, C. Luo, M. Watzich, G. Jones, A. Markoe
PO-61 Dosimetric Characteristics in Electron Grid Therapy - A. Meigooni*, S. Parker, J. Zheng, M. Mohiuddin, W. Regine
PO-62 Small 6 MV field dose distributions near simulated air cavities - K. De Vlamynck*, H. Palmans, F. Verhaegen, C. De Wagter
PO-63 Output Factors For Electron Custom Inserts with Beam Center Non Coincident with Cone Center - A. Khatib*, B. Ahluwahlia
PO-64 Evaluation Of The Dosimetric Characteristics Of A Superficial X-Ray Therapy Machine Having Beveled Applicator - E. Parsai*, K. Ayyangar, L. Tao
PO-65 Head-Scatter Off-Axis for Megavoltage X-Rays - T. Zhu*, Y. Xiao, B. Bjarngard
PO-66 An Analysis Of The Effective Energies And Dosimetric Data Of 6 And 10 MV Photon Beams - S. Prasad*, K. Parthasaradhi, O. Thomson, J. McMahon, T. Krupa, W. Bloomer, R. Nanda
PO-67 A Retrospective Analysis of Electron Cutout Factor Measurements - K. Krishna*, C. Saw, J. Coletti, L. Korb
PO-68 In-Vivo Dosimetry with Diodes for Electron Beams: Clinical Implementation - R. Yaparpalvi*, D. Fontenla, B. Vikram
PO-69 Partial Lung Shield for TBI - S. Kishel, G. Proulx, A. Ho*
PO-70 Enhanced Dynamic Wedge Surface Dose and Half-Field Profiles - A. Kassaee*, Y. Xiao, B. Bjarngard, M. Altschuler
PO-71 Clinical Implementation of Variations in Wedge Factor with Depth and Field Size - S. Prasad*, D. Bassano
PO-72 Evaluation of clinical use of in-vivo diode dosimetry for beams - D. Fontenla*, R. Yaparpalvi, S. Deore, E. Mullokandov, A. Kapulsky, J. Keane, B. Vikram
PO-73 Automated Generation of Wedge Coordinates from Wedge Profiles - M. Weber*, N. Varadhan
PO-74 Field Size and Depth Dependence of Wedge Transmission for Dynamic Wedge of a Varian Clinac 2100 C/D Linear Accelerator - J. Lee*, S. Cho
PO-75 Initial Angular Divergence of Electron Beams from Varian Clinac C/D Machines - S. Goddu*, W. Harms, E. Klein, J. Purdy
PO-76 In-Vivo Thermoluminescence Dosimetry for Intraoperative Radiation Therapy - C. Kim*, C. Kim, M. Choi
PO-77 Side Table Transmission for ETR and Exact Treatment Couches - A. Thompson*, E. Klein
PO-78 Total skin electron therapy using a Philips-Elekta SL-25 linear accelerator with multileaf collimation - L. Fajardo*, P. Almond, D. Wilson
PO-79 Dosimetric Properties of Centered and Off-Centered Posterior Neck Electron Fields - E. Yorke*, A. Kassaee, L. Lin, D. Rosenthal
PO-80 Wedge Factors and Depth Doses Changes as a Function of Depth for Siemens' Large Field Wedges for 6 MV and 20 MV Photon Beams - F. Lopez, J. Rownd, D. Grimm, M. Gillin*
PO-81 X-Ray Spectrum Unfolding Using Transmission Measurements and A Multihole Megavoltage Photon Diverging Collimator for 6 MV Photons - D. Chen*, N. Lee, R. Waggener
PO-82 Measured Water Transmission Curves and Calculated Zero Field Size TMRs for 4 MV and 15 MV X-Rays - N. Lee*, D. Chen, R. Waggener
PO-83 Impact of patient body temperature on in vivo diode dosimetry - L. Reinstein*, K. Welsh, A. Meek
PO-84 Accuracy of Pencil Beam Parameters using Various Measurement and Calculational Approaches - P. Higgins*, F. Khan
PO-85 A Modern Object Oriented Monte Carlo Code for Electron-Gamma Shower Simulations - J. Almassy*
PO-86 Accuracy and Performance in Superposition Photon Dose Calculations - M. Wiesmeyer*, M. Miften, K. Krippner
PO-87 Parameter study for optimizing Monte-Carlo simulation in external-beam treatment planning - C. Mubata*, A. Nahum, I. Rosenberg, A. Bielajew
PO-88 Implementation of the Collapsed Cone Method for Clinical Beam Qualities - M. Saxner*, A. Ahnesjö
PO-89 Component-Based Superposition Calculations: Dependence on Number of Components - J. Schewe*, D. McShan, B. Fraass
PO-90 Superposition kernels to compute dose from beam elements for inverse treatment planning - S. Sutlief*, P. Cho, M. Phillips
PO-91 Improvements in the Monte Carlo Based Calculation of Prepl of Plane-Parallel Electron Chambers - M. Lauterbach*, J. Lehmann, U. Rosenow
PO-92 BEAM-generated Real Spectra versus Monoenergetic or Approximate Spectra in the EGS4/PRESTA-II Calculation of Prepl in Plane-parallel Electron Chambers - J. Lehmann*, M. Lauterbach, U. Rosenow
PO-93 Monte Carlo Transport Physics Algorithms and Variance Reduction Methods in the PEREGRINE Dose Calculation System - P. Bergstrom*, A. Bielajew, W. Chandler, L. Cox, T. Daly, D. Garrett, B. Guidry, C. Hartmann Siantar, S. Hornstein, R. House, D. Jong, E. Moses, R. Patterson, J. Rathkopf, A. Schach von Wittenau
PO-94 Systematic Analysis of Monte Carlo Generated Phase - B. Libby*, J. Siebers, R. Mohan
PO-95 Monte Carlo Transport of Photons and Electrons Through Beam Modifiers in the PEREGRINE Dose Calculation System - A. Schach von Wittenau*, L. Cox, R. House, P. Bergstrom
PO-96 Single Source Models for Monte Carlo Dose Calculations in Radiotherapy - M. Fix*, H. Keller, E. Born, P. Ruegsegger
PO-97 Dosimetric Comparison of a Fast TMR Dose Algorithm to a Full Clarkson Integration Algorithm - F. Hacker*, M. Bellerive, H. Kooy
PO-98 Fast Hierarchical Algorithm for Photon Beam Dose Calculation - H. Jung, J. Palta*, S. Ranka, S. Sahni, T. Zhu
PO-99 Monte Carlo calculations of heterogeneity correction factors - A. Kapur, C. Ma*
PO-100 A Path Length Correction to Electron Beam Dose Distributions in Slab Type Media - D. Wilson*
PO-101 Calculation of virtual wedge factors for symmetric and asymmetric photon fields - J. Gibbons*, D. Vassy
PO-102 Improved 3-D pencil beam model for MLC-shaped high energy electron beams - J. Moran*, D. McShan, I. Bruinvis, B. Fraass
PO-103 A Fermi-Eyges Based 3D Kernel Scaling Method to Account for Primary Electron Transport in Superposition Photon Dose Calculations - M. Miften*, M. Wiesmeyer, K. Krippner
PO-104 Verification of a Commercial FFT-Convolution Algorithm using Monte Carlo Simulations - E. Mok*, A. Boyer, C. Ma, A. Kapur, L. Ma
PO-105 Validation of a Finite Size Pencil Beam Dose Model for Intensity Modulated Radiation Therapy with Multileaf Collimators - B. Curran*, A. Bleier, M. Carol, R. Hill, T. Holmes, A. Kania, R. Lalonde, L. Larson, E. Sternick
PO-106 Extractions of the Photon Spectra From Measured Beam Parameters - J. McDonough*, P. Bloch
PO-107 Clinical Implementation of a Dual Source/Finite Pencil Beam Dose Calculation Algorithm for Conformal and Intensity Modulated Therapy - M. Phillips*, K. Singer, A. Hounsell*
PO-108 Application of Colouring Theory to Reduce IMRT Dose Calculations - M. Langer*
PO-109 A generalized phase-space source model for Monte Carlo modeling of arbitrary intensity distributions - I. Chetty*, J. DeMarco, T. Solberg
PO-110 Experimental Verification of a CT-based Monte Carlo Dose-Calculation Method in Heterogeneous Phantoms - L. Wang*, M. Lovelock, C. Chui, T. LoSasso
PO-111 Dynamic and Physical Wedge Calculations with FOCUS Using the Clarkson and FFT Convolution Algorithms - E. Klein*, W. Harms, S. Mutic, J. Purdy
PO-112 Calculation of head scatter factors at off-axis points for linear accelerator photon beams - M. Yu*, G. Ding, R. Sloboda
PO-113 Modelling the Phase Space and Dose Distribution of an Orthovoltage Unit - F. Monti di Sopra, P. Keall*
PO-114 Derivation of Attenuation Coefficients from CT Numbers for Low Energy Photons - Y. Watanabe*
PO-115 Head-Scatter Off-Axis For Mega Voltage X-Rays - T. Zhu*, Y. Xiao, B. Bjarngard
PO-116 Bone Equivalency Of Materials - S. Prasad*, K. Parthasaradhi, W. Al-Najjar, W. Bloomer
PO-117 A Water Calorimeter for High Energy Photon and Electron Beams - A. Williams, K. Rosser, A. DuSautoy*
PO-118 An Innovative Plastic Phantom for Use in TG21 Calibration and Routine QA - J. Huang*
PO-119 A novel technique to characterize the complete motion of a medical linear accelerator - M. Moreau*, D. Drake, D. Jaffray
PO-120 Conversion of a Document Scanner into an Optical CT Scanner for 3D Gel Dosimetry - K. Jordan*, R. Studinski, J. Battista
PO-121 Clinical 3D dosimetry by optical laser CT scanning of BANG polymer gels. - M. Ranade, F. d'Errico, M. Barry, M. Maryanski*
PO-122 Design and Construction Details of the NIST Absorbed Dose Water Calorimeter - K. Gall*
PO-123 A study of n and p type diode detectors after very high radiation dose from electron and photon beams - J. Shi*, W. Simon, S. Johnsen
PO-124 Experimental Validation of the Wide Radiation Field Calibration Technique for a Diode Array - C. Liu*, L. Ding, J. Palta, W. Simon, J. Shi
PO-125 Comparison of Off-axis Beam Quality between Physical Wedged Fields and Dynamic Wedged Fields in the Converse Axis - M. Johnson*, S. Sharma
PO-126 Gel dosimetry using PoMRI: studies of the dose response characteristics and basic dose distribution data - P. Haraldsson, S. Bäck, P. Magnusson, M. Lööf, L. Olsson*
PO-127 Over-estimation of Pion Using the Conventional Boag Two-Voltage Technique - R. Tailor*, P. Balter, W. Hanson
PO-128 Steep Dose Gradients Measured with a Custom Built Laser Diode Scanning System and MD-55 GafChromic Film - P. Sullivan*, B. Hasson, C. Grossman, L. Simpson
PO-129 Radiological Properties and Water Equivalence of Dosimetry Gels - P. Keall*, C. Baldock
PO-130 A Cross Pattern 17 Chamber Matrix Dosemeter for Flatness, Symmetry, and Output Checks of Linear Accelerator Photon and Electron Beams - A. Kerr*, K. Welch, M. Natalini
PO-131 Commissioning of the New Electron Beam Algorithm in Theraplan Plus 3D Planning System - J. Cygler*, G. Ding, K. Ash
PO-132 Investigation of Factors Affecting Sensitivity of Ferrous Sulphate Gel Radiation Dosimeters - M. Zahmatkesh*, B. Healy, C. Baldock
PO-133 Preventative Maintenance and Unscheduled Downtime from an Economic Perspective - P. Dunscombe*, G. Roberts, L. Valiquette
PO-134 Remote Monitoring Program for Dosimetry Data and Patient Dose Calculations - J. BenComo*, J. Roll, W. Hanson
PO-135 A Test Tool for the Visual Verification of Light and Radiation Fields using Film or an EPID - P. Dunscombe*, S. Humphreys, K. Leszczynski
PO-136 Dosimetric Verification of a Newly Installed 3D Treatment Planning System - T. Chu*, E. Lederer, P. Dunscombe
PO-137 Third-Level Benchmarking for Photon Beam Commissioning on Two Commercial 3D Treatment Planning Computers - J. Dawson, D. Kahler*, W. Kopecky, J. Gu, R. McDonald
PO-138 TG-23 Dosimetric Verification of a Commercially Available 3-D RTP System - K. Spencer*, C. Ramsey, A. Oliver
PO-139 Commissioning, QA, and radiation safety of the first Intraop Mobetron, mobile electron linac. - N. Albright*, M. How, P. Purser, T. Cook, G. Spalek, D. Goer
PO-140 Commissioning electron beams in the CadPlan 3D planning system - G. Ding*, M. Yu, J. Cygler
PO-141 An Automated Portal Verification System for Anterior-Posterior Pelvic Fields - Q. Gao*, F. Yin, R. Li
PO-142 Web-Based Image Management in Radiation Therapy - F. Yin*, R. Weil, T. Bogucki, Q. Gao, P. Okunieff
PO-143 Cascaded systems analysis of a Flat-Panel Portal Imager - K. Jee*, L. Antonuk, Y. El-Mohri, M. Maolinbay, S. Nassif, X. Rong, J. Siewerdsen, Q. Zhao
PO-144 Megavoltage CT on a Tomotherapy System: A Comparison of Maximum-Likelihood vs. Filtered Back-Projection Reconstruction Algorithms - K. Ruchala*, G. Olivera, T. Mackie, P. Reckwerdt
PO-145 Tissue Mimicking Materials for a Multi-Imaging Modality Prostate Phantom - W. D'Souza*, E. Madsen, B. Thomadsen, G. Frank
PO-146 Lung cancer target motion study with application to image directed radiation therapy (IDRT) - Q. Chen*, M. Weinhous, R. Macklis
PO-147 The development of portal CT reconstruction using MLS-ART technique and the kinestatic charge detector imaging system: II. Radiotherapy beam studies - H. Guan*, M. Gaber, S. Samant, F. DiBianca, Y. Zhu
PO-148 Evaluation of a Cassette-Screen-Film Combination with Improved Contrast for Verification Portal Imaging During Radiation Therapy Treatments - R. Keys*, J. Marks, A. Haus
PO-149 Clinical Implementation of a Matrix Ion Chamber EPID in Obese Patients Treatment - F. Trichter*, J. Bargellini, H. Amols, P. Schiff
PO-150 A comparison of imaging techniques for stereotactic localization - R. Drzymala*, S. Mutic, E. Klein
PO-151 Initial Experience with a Dedicated System for Dynamic Shaped Beam Radiosurgery - T. Solberg*, P. Medin, R. Fogg, J. DeMarco, A. Arellano, T. Paul, I. Chetty, A. DeSalles, M. Selch, J. Smathers
PO-152 An Extensive Evaluation of the Monte Carlo Treatment Planning for Stereotactic Radiosurgery - K. Ayyangar*, S. Jiang, R. Dobelbower, J. Feldmeier, J. Battle, D. Carter, J. Brown, K. Ayyangar
PO-153 Recommissioning a Stereotactic Radiosurgery System Following Machine Upgrade or Transfer - E. Hendee*, P. Sinha, T. Mackie, B. Paliwal, M. Mehta
PO-154 Clinical Results of Pointing Accuracy Quality Assurance for a Robotically-Mounted Linear Accelerator Used for Stereotactic Radiosurgery - J. Gilio*, K. Gall, C. Chang, D. Garwood
PO-155 Quantitative Dosimetry Evaluation Using BANG Gel and Image Correlation - S. Meeks*, F. Bova, M. Maryanski, L. Kendrick, M. Ranade, J. Buatti, W. Friedman
PO-156 Deconvolution with the Total Least Squares approach: an application to small photon field dosimetry - P. Charland*, E. El-Khatib
PO-157 Stereotactic radiosurgery (SRS) dosimetry: measurements and Monte Carlo simulation - F. Verhaegen*, I. Das, H. Palmans
PO-158 End Effect in (model B) Gamma Knife Radiosurgery Treatments - T. Willoughby
PO-159 Leaf Sequencing Optimization for Static IMRT - R. Siochi*
PO-160 Contralateral Breast Dose from Tangential Breast Phantom Irradiation: Comparison of Different Intensity Modulation Techniques - S. Chang*, K. Deschesne, T. Cullip, J. Earnhart, S. Parker, E. Chaney
PO-161 Monte Carlo analysis of the response of a Beam Imaging Phantom for IMRT - C. Ma*, L. Ma, L. Xing, A. Kapur, A. Boyer
PO-162 Verification and Delivery of Head and Neck Intensity Modulated Radiotherapy - A. Boyer*, L. Xing, L. Ma, K. Forster
PO-163 Using multiple MLC segments or Virtual Wedge for tissue compensation in Hodgkin's disease - J. van Santvoort*
PO-164 A clinical study of prostatic motion during radiation treatment with the use of EPID and radiopaque markers - J. Hai*, E. Vigneault, L. Verhey
PO-165 In vivo measurements of intensity modulated radiation therapy - P. Cho (1)*, M. Phillips (1), S. Sutlief (1), P. Gavin (2), H. Kippenes (2), P. Cho
PO-166 A unified computational approach in optimization planning, image reconstruction, and dose reconstruction - G. Olivera*, D. Shepard, P. Reckwerdt, K. Ruchala, J. Zachman, E. Fitchard, T. Mackie
PO-167 Comparison of Multi-field Conformal versus Intensity-modulated Treatment Plans Based on Complication and Control Probabilities. - V. Smith*, P. Xia, L. Verhey
PO-168 Delivery of IMRT with Ellis-type Compensating Filters - L. Ma, A. Beavis*, L. Xing, C. Ma, A. Boyer
PO-169 The effect of leaf shape and transmission characteristics on the accuracy of intensity-modulated radiotherapy (IMRT) delivered with dynamic multileaf (DMLC) - M. Arnfield
PO-170 The advantages of amorphous silicon x-ray cameras for radiographic patient positioning - M. Murphy*, J. Adler, T. Koumrian
PO-171 Delivery of intensity modulated radiation therapy by dynamic multileaf collimation: resolution requirements for specifying leaf trajectories - G. Budgell*
PO-172 Helical vs. Sequential Tomotherapy - J. Balog*, T. Mackie, P. Reckwerdt
PO-173 A Transformation That Corrects Delivery Sinograms For Patient Misalignment - E. Fitchard*, P. Reckwerdt, G. Olivera, D. Shepard, T. Mackie
PO-174 A Variable Speed Translating Couch Technique for Total Body Irradiation - M. Chrétien*, J. Pouliot, R. Blais, C. Côté, R. Roy, D. Tremblay
PO-175 Matching Adjacent Fields Using a Dynamic Matchline Wedge - J. McDonough*, H. Bushe, D. Rosenthal
PO-176 Virtual Wedge Factor: An Uncertainty Analysis - I. Das*, T. Steinberg
PO-177 The Potential for Error in Treatments Due to Monitor Unit Calibration Offsets - C. Chang*, K. Gall, C. James
PO-178 Study of numerically produced compensators for conventional and intensity modulated beam therapy - H. Thompson, M. Evans, W. Parker, B. Fallone*
PO-179 An Analysis of Dose Perturbations from Patient Misalignment in Delivery of Intensity Modulated Radiotherapy. - J. Kung*, G. Chen
PO-180 Clinical Usability Of The BAT Transabdominal Ultrasound System For Localization Of The Prostate: Preliminary Results - G. Harnisch*, R. Lalonde, M. Weinhous, T. Willoughby, D. Mohan, P. Kupelian
PO-181 Analytic Approximations Of The Edge Factors For A MLC - S. Li*, J. Dicello, N. Detorie, P. Geis, A. Boyer
PO-182 Effects of leakage, tongue and groove leaf design and output variations on intensity modulation with multileaf collimator - C. Yu*
PO-183 Technology Assessment of Multileaf Collimation: A North American Users Survey - E. Klein**, J. Tepper, M. Sontag, M. Franklin, C. Ling, H. Kubo, A. Shiu
PO-184 Dose Rate Optimization for Dynamic One-Dimensional Beam Intensity Modulation - I. Khalil-Bustany*, I. Daftari, G. Bednarz, L. Verhey, I. Khalil-Bustany
PO-185 Variation in the position of 3D brain fields: An analysis using R&V data. - M. Marshall*
PO-186 Qa and verification of intensity modulation radiotherapy - T. LoSasso*, C. Burman, C. Chui, C. Ling
PO-187 Dose Escalation in Treatment of Malignancies in the Lung by Using the Stereotactic Body Frame - R. Middleton*
PO-188 Prostate Localization Using the NOMOS Peacock System - J. McGary*, W. Grant
PO-189 A Method to Produce Shaped Fields for Static Conformal Radiation Therapy - C. Whiddon*, S. Das, L. Marks
PO-190 CT-Based Dose Compensation Using a 3D Treatment Planning System and a Computerised Compensator Cutter - C. Swift*, G. White, M. Al-Ghazi, K. Yuen
PO-191 Clinical Experience with the AcQsim CT-Simulator - C. Swift, M. Al-Ghazi*
PO-192 Use of Compensating Filters in Intensity Modulated Radiotherapy - P. Basran*, W. Ansbacher, C. Field, B. Murray
PO-193 Automated bone segmentation from MR brain datasets for use in radiotherapy treatment planning - D. Brinkmann*, R. Kline, J. Bourland
PO-194 Errors in Isodose Calculations for Conformal Prostate Treatments using Multileaf Collimators - N. Gupta*, B. Albertson
PO-195 Optimizing 3D Dose Distributions Without Inverse Treatment Planning - J. Galvin*, J. Sweet, G. Bednarz, S. Hughes, W. Curran, Jr.
PO-196 Can a CT Based 2D Treatment Planning System Approach the The Accuracy of 3D Conformal Planning. - E. Parsai, K. Ayyangar, L. Tao*, J. Feldmeier
PO-197 Custom Designed Beam Spoilers for Head and Neck Treatment - A. Kassaee*, P. Bloch, E. Yorke, M. Altschuler, D. Rosenthal
PO-198 Conformal RT for Prostate Ca: Prone vs. Supine Treatment Position - R. Muller-Runkel*, N. Burriesci
PO-199 Implementation of MLC in a University 3D Radiation Treatment Planning System - W. Dezarn*, J. Bourland
PO-200 Dose Comparisons and Implications for Implementation of 3-D Treatment Planning - P. Garmon*, Q. Wu, R. Zwicker, G. Hundley, R. Mohan
PO-201 Fitting the Critical Volume NTCP model to - P. Stavrev*, A. Niemierko, N. Stavrev, M. Goitein
PO-202 Subclinical disease dose-volume effects - J. Deasy*
PO-203 Intensity Modulation for Breast Treatment Using Static Multi-Leaf Collimators - Y. Lo, G. Yasuda*, T. FitzGerald, B. DeGaspe, M. Urie
PO-204 Treatment Planning Implementation of Modified Penumbras for Matching of Electron Fields - B. Lachance*, D. Tremblay, J. Pouliot
PO-205 An Objective Calculation Method for CT Scan Conversion in Radiation Therapy Treatment Planning - D. Wilson*
PO-206 Video Capture of Prostate Ultrasound Images and Display in a 3D Treatment Planning Computer - P. Sinha*, W. D'Souza, B. Thomadsen, M. Ritter
PO-207 Progress in Real-Time 3D Dose Planning - J. Matthews*, B. Goldsmith, J. Purdy
PO-208 Analyzing and Reporting Large Dose Inhomogeneities using the Effective Uniform Dose Formulation Based on the Linear-Quadratic Model - J. McGary*, W. Grant