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Therapy General ePoster ViewingSunday - 7/25/2021
Therapy General ePoster Viewing AAPM ePoster Library

 
PO-GePV-T-1 : A Nomogram to Estimate Required Ci-S in Prostate HDR Brachytherapy
J. Nasehi Tehrani*, G. Lasio, B. Libby, N. Lamichhane, K. Jiang, M. MacFarlane, M. Guerrero

 
PO-GePV-T-2 : Independent Determination of Absorbed Dose to Water Depth-Dose Curves for Ru-106 Ophthalmic Plaques Traceable to the Primary Standards of External Beam Radiotherapy
V. Kaveckyte*, S. Dahlander, Å. Carlsson Tedgren

 
PO-GePV-T-3 : HDR Ring Applicator Commissioning: Eliminating the Need for Film-Processors to Generate Autoradiographs
J. Kilian-Meneghin*, S. Thompson, J. Khan, B. Liu, N. Yue, L. Hathout, I. Vergalasova

 
PO-GePV-T-4 : Quantifying Risk Associated with Physics Errors in HDR Prostate Brachytherapy Using Automated Simulations
M. Trager, J. Beaudry, D. Aramburu Núñez, G. Cohen, L. Dauer, D. Gorovets, N. Hassan Rezaeian, M. Kollmeier, B. Leong, P. McCann, M. Williamson, M. Zelefsky, A. Damato*

 
PO-GePV-T-5 : Error Detection in HDR Prostate Brachytherapy with Plan-Specific Optimization of In-Vivo Dosimetry (IVD) Parameters
D. Aramburu Núñez, M. Collier, J. Beaudry, G. Cohen, A. Damato*

 
PO-GePV-T-6 : Performance Evaluation of a Novel Quality Assurance Device for High Dose-Rate Brachytherapy
L. Sensoy*, N. Bassiri, P. De Jean, S. Benedict

 
PO-GePV-T-7 : Commissioning of Lumen Markers for Needle Visualization on MRI Scans in HDR-Gyn Brachytherapy
V. Chaswal*, R. Tolakanahalli, J. Contreras

 
PO-GePV-T-8 : Determination of Changes in Dosimetric Parameters with Co-60 and Ir-192 Source in High Dose Rate Brachytherapy of Cervical Carcinoma
S. Srivastava*, N. Moirangthem, N. Singh

 
PO-GePV-T-10 : Dose Optimization of Vaginal Cylinder: A New Planning Method for Patients with Endometrial Adenocarcinoma
X. Wu*, A. Mcdonald, S. Shen, S. Marcrom, R. Kim

 
PO-GePV-T-12 : Dosimetrc Evaluation of Rectal Hydrogel Spacer in Prostate HDR Treatments
I. Veltchev*, T. Lin, X. Chen, C. Lee, T. Dougherty, J. Wong, M. Hallman, E. Horwitz, R. Price, C. Ma

 
PO-GePV-T-13 : Commissioning of High Dose Rate Brachytherapy Surface Applicator System
B. Wichman*, D. Francom, T. Howard, A. Wilkinson, R. Posey

 
PO-GePV-T-14 : A Retrospective Dose Analysis of High-Dose Rate (HDR) Tandem and Ovoid and Interstitial Needle Cervical Brachytherapy Cases with a Model-Based Dose Calculation Algorithm (MBDCA)
B. Radcliffe*, S. Meltsner, Z. Chang, J. Chino, M. Huang, O. Craciunescu

 
PO-GePV-T-15 : HDR Brachytherapy as An Alternative to SBRT for Treating Selective Lung Cancer Patients
K. Lyons*, T. Biswas, C. Towe, N. Azar, M. Yao, C. Langmack, T. Podder

 
PO-GePV-T-17 : Evaluation of Post-Implant Dosimetry in LDR Permanent Interstitial Brachytherapy for Prostate Cancer
Y. Khouj*, T. Harris, D. O'Farrell, E. Neubauer Sugar, P. Nguyen, P. Orio, M. King, I. Buzurovic

 
PO-GePV-T-18 : Dosimetric Differences of Line-Source Versus Point-Source Approximation for Prostate Seed Implant
K. Lyons*, E. Fredman, G. Guo, R. Ove, T. Podder

 
PO-GePV-T-19 : MRI-Based Virtual Volume Study for Permanent Prostate Brachytherapy (PPB)
Y. Le*, S. Ng, Y. Yue, G. Guo, J. Holmes

 
PO-GePV-T-20 : Evaluation of Dosimetric Parameters of Two Brachytherapy Ophthalmic Sources Using Monte Carlo Simulation
P. Ramon*, A. Quevedo, T. Pianoschi

 
PO-GePV-T-21 : A Comparison of Surgical Bed Biologically Effective Dose From Permanently Implanted Collagen Tile Embedded Cs-131 Brachytherapy Vs Stereotactic Radiosurgery in Patients with Resected Brain Tumors
A. Turner*, M. Choi, D. Brachman

 
PO-GePV-T-22 : A Comprehensive Dosimetric Evaluation of Circular Collaborative Ocular Melanoma Study (COMS) Plaques and Eye Physics Plaques On a Standard Eye Model
E. Quan*, B. Teh, A. Schefler, R. Pino

 
PO-GePV-T-23 : Dosimetric Impact of Atlas Generated Contours for Post-Prostate Seed Implant Evaluation
A. Antolak*, J. Ciezki, M. Kolar

 
PO-GePV-T-25 : Evaluation of Dose Distribution From An Ophthalmic Brachytherapy Through the TOPAS Code
I. Knoll*, L. de Souza, A. Quevedo, M. Alva

 
PO-GePV-T-26 : Evaluation of MIM Symphony Treatment Planning System for Post Prostate Seed Implant (PPSI) Planning
H. Zhao*, F. Su, X. Li, J. Kunz, G. Nelson, P. Rassiah-Szegedi, K. Hopfensperger, G. Stinnett, Y. Huang

 
PO-GePV-T-27 : Automating Brachytherapy Treatment Plan Document Generation by Using Eclipse Scripting API (v15.6)
R. Sheu*, N. Vassell, C. Teng, Y. Lo

 
PO-GePV-T-28 : Evaluation of Eclipse Smart Segmentation for Liver Yttrium-90 Selective Internal Radiation Therapy
J. Li*, R. Anne

 
PO-GePV-T-29 : Validation of ACE: Advanced Collapsed Cone Engine Heterogeneity-Corrected Brachytherapy Dose Calculation with Gafchromic EBT3 Film
D. McIlrath*, E. Schnell

 
PO-GePV-T-30 : Investigation of Impact of Systematic Errors in Applicator Reconstruction On Doses of Organs at Risk and Target Volumes in Intracavitary Brachytherapy
G. Singh*, A. Mourya, B. SINGH, D. Thaper, R. Kamal, A. Oinam, V. Kumar, B. Rai

 
PO-GePV-T-31 : Focal-Boost Dose Escalation in High-Dose-Rate Brachytherapy
C. Guthier*, T. Harris, M. King, I. Buzurovic, R. Cormack

 
PO-GePV-T-32 : Recommendations for Previous Treatment Assessment of Non-CT Based IVRT Brachytherapy
D. Aramburu Núñez, V. Brennan, M. Kollmeier, K. Alektiar, A. Damato*, G. Cohen

 
PO-GePV-T-33 : Role of Planning Ring Structure in Volume Optimization for High-Dose-Rate Prostate Brachytherapy
Z. Shen*, O. Ragab, W. Yang, S. Balik, A. Zhuang, J. Cui, A. Shiu, E. Chang

 
PO-GePV-T-34 : Interfractional Dosimetric Variations of the Target and OARs for HDR GYN Brachytherapy
B. Washington*, M. Randall, D. Fabian, W. Luo

 
PO-GePV-T-35 : Calculation of Stopping-Power Ratios for Electron Beams Used in Total Skin Electron Therapy
G. Ding*

 
PO-GePV-T-36 : Variability of Bremsstrahlung Among Modern Detectors in Total Skin Electron Treatment
S. Kucuker Dogan*, M. Gopalakrishnan, I. Das

 
PO-GePV-T-37 : Verification of Electron Beam Energy Stability
J. Foy*, S. Kucuker Dogan, M. Gopalakrishnan, I. Das

 
PO-GePV-T-38 : An Investigation of Dosimetric Effects From Handlebars During Total Skin Electron Therapy
N. Brovold*, E. Dziemianowicz, K. Verdecchia

 
PO-GePV-T-39 : Real-Time in Vivo Dosimetry for Electron Beam Therapy Using Amorphous Silicon Based Flexible Thin Film Combined with Scintillating Powder
S. Jeong*, Y. Kwon, S. Park, D. Shin, Y. Lim, J. Jeong, H. Kim, W. Cheon, S. Lee

 
PO-GePV-T-40 : Evaluating a Commercial Electron Monte Carlo Algorithm Using Oblique Incidence and Irregular Surfaces Present On Custom Wax Phantoms
E. Cichewicz*, E. Salari, E. Parsai

 
PO-GePV-T-41 : Development of a Software Tool for FLASH Dose and Dose Rate Optimization for IntraOp Mobetron
A. Ayan*, D. Blakaj, A. Chakravarti, N. Gupta, J. Woollard

 
PO-GePV-T-42 : EFLASH Dosimetry On a Conventional Linac Using Pulse-Gated Delivery
C. Duzenli*, C. Mendez, M. Petric, J. Sweeney, D. Ta, T. Karan

 
PO-GePV-T-43 : Analog FLASH Pulse Integration Using An External Diode Circuit
J. Vadas*, R. Halford, G. Wilson, D. Yan, M. Snyder

 
PO-GePV-T-44 : Bremsstrahlung Dose of the Electron Beam at Extended Distances Used in Total Skin Electron Therapy
G. Ding*, S. Kucuker Dogan, I. Das

 
PO-GePV-T-45 : Creation and Validation of An Interactive Electron Cutout Library in a Clinical Environment
M. Keohane*, K. Crotteau, A. Riegel

 
PO-GePV-T-46 : A Thorough Validation of Electron Monte-Carlo Dose Calculation Algorithm and Generation of Correction Factors for Independent Monitor Units Hand Calculations in Clinic
A. Skinner*, S. Souri, J. Baker, E. Sudentas, G. Gill

 
PO-GePV-T-47 : A Monte Carlo Study of Patient Dose Distributions Between Stanford Six-Field and Rotational Techniques in Total Skin Electron Therapy
G. Ding*, Z. Chen, W. Zhong, T. Zhu

 
PO-GePV-T-48 : A Clinical Workflow for Creating 3D Printed Bolus with Isocenter and Orientation Labels for Placement
L. KUO*, S. Hellman, M. Trager, C. Huang, M. Aristophanous, C. Barker, G. Li

 
PO-GePV-T-49 : Quality Assurance and Acceptance of Eyeshields for Use in Electron Radiotherapy
H. Kadji*, B. Lewis, R. Teboh Forbang

 
PO-GePV-T-51 : Development and Validation of ESAPI Script Based Electron Cutout Digitizer
T. Chen*, H. Wang, J. Teruel, D. Barbee

 
PO-GePV-T-53 : A Comparative Study
of Different Collimation Methods for Quantification of Required Skin Margin During
electron Treatment

N. Shrestha*, M. Brenner, G. Narayanasamy, S. Morrill, H. Su, G. Lewis, F. Kalantari

 
PO-GePV-T-54 : Dosimetric Effects of a Commercial Breast Board Patient Support System
D. Pearson, E. Schodowski*, A. Wilkinson

 
PO-GePV-T-55 : Initial Characterization and Validation of a Commercial Head and Neck Immobilization System for MR-Guided Radiotherapy
J. McCulloch*, A. Gutierrez, T. Romaguera, D. Alvarez, K. Mittauer

 
PO-GePV-T-56 : Accuracy and Precision of Surface Tracking On Bra-Fitted Breast Radiation Treatment
T. Lin*, C. Ma

 
PO-GePV-T-57 : Clinical Implementation of An Abdominal Compression Belt On a Double Scattering Proton Machine
X. Wang*, Y. Zhang, J. Zhu, K. Qing, K. Nie, T. Cui, N. Yue, B. Liu

 
PO-GePV-T-58 : Comparison of Three Cushion Types for Gamma Knife Icon Mask Treatment
D. Luo*, T. Briere, E. Han, M. McAleer

 
PO-GePV-T-59 : Risk Mitigation Strategies for Custom Software in the Clinic
R. Cardan*, E. Covington, R. Popple

 
PO-GePV-T-61 : Recommendations for a Medical Physics Pre-Simulation Breath Hold Consultation: Medical Physics 3.0 in Practice
E. Cichewicz*, C. Windsor, J. Seekamp, D. Pearson

 
PO-GePV-T-63 : Skin Toxicity Assessment Using Optical-Wavelength Video Processing
R. Culcasi*, M. Snyder

 
PO-GePV-T-64 : Impact On Patient Reported Quality of Life From Reducing Prostate Margins in Patients Who Underwent Radiotherapy: A Prospective Clinical Trial
A. Kumarasiri*, S. Brown, E. Mohamed, I. Chetty, B. Movsas

 
PO-GePV-T-65 : NTCP Modeling of Patient Reported Dysphagia Using the EAT10 Scoring System 12 Months After Radiotherapy for Oropharyngeal Cancer
B. Chera*, A. Tzikas, E. Lavdas, R. Amdur, W. Mendenhall, N. Sheets, R. Green, L. Marks, S. Das, P. Mavroidis

 
PO-GePV-T-66 : Investigating the Time and Organ Dependency of NTCP Modeling of Patient Reported Sticky Saliva After HPV Associated Oropharyngeal Cancer
B. Chera*, A. Tzikas, E. Lavdas, R. Amdur, W. Mendenhall, N. Sheets, R. Green, L. Marks, S. Das, P. Mavroidis

 
PO-GePV-T-67 : NTCP Modeling and Dose-Volume Correlations of Significant Blood Count Drops 3 Months After Prostate Radiation Therapy
P. Papanikolaou*, G. Swanson, S. Stathakis, P. Mavroidis

 
PO-GePV-T-68 : A Framework for Exploring the Correlation Between Radiation-Induced Toxicities and Dosimetric Quantities
A. Abdel-Rehim*, H. Wan Chan Tseung

 
PO-GePV-T-69 : 4D Treatment Planning for Lung Proton Therapy: Treatment Design and Evaluation
V. Taasti*, D. Hattu, F. Vaassen, R. Canters, M. Velders, J. Mannens, J. Van Loon, I. Rinaldi, M. Unipan, W. Van Elmpt

 
PO-GePV-T-70 : Dose Enhancement Effects of High-Z Nanoparticles in Proton Therapy
K. Duke*, S. Ahmad, A. Lau

 
PO-GePV-T-71 : Radiobiological Evaluation of Physical Metrics in IMPT and VMAT Planning for Prostate Cancer Patient with Metal Hip Prostheses
W. Hsi*, T. Lee

 
PO-GePV-T-72 : Developing a Workflow Using Supercomputer Accelerated Monte Carlo Simulation Based On Machine Log-Files for Patient Specific Quality Assurance of the Mevion S250i Proton Therapy System
B. Chiang*, Y. Chen, S. Ahmad

 
PO-GePV-T-73 : Analysis of the Difference in Calculation of Physical Dose for Each Patient Site of SECT and DECT Using TOPAS
E. Yoon*, S. Jung, J. Son, B. Kim, C. Choi, J. Kim, J. Park

 
PO-GePV-T-75 : Development of a Machine Learning Model to Predict Dosimetric Impact of Proton Spot Delivery Errors
M. Newpower*, S. Ahmad, Y. Chen

 
PO-GePV-T-76 : Open Source TPS for Bragg Peak Proton FLASH Treatment Plans
L. Hotoiu*, A. Pin, S. Deffet, E. Sterpin, R. Labarbe

 
PO-GePV-T-77 : Virtual Particle Monte Carlo (VPMC), a New Concept to Avoid Simulating Secondary Particles in Proton Therapy Dose Calculation
J. Shan*, M. Fatyga, W. Liu

 
PO-GePV-T-78 : Experimental Validation of Clinical Proton Dose Calculation Algorithms for Breast Prostheses and Tissue Expanders
C. Chen*, P. Tsai, S. Huang, I. Choi, H. Lin

 
PO-GePV-T-79 : Development of a Fast and Memory-Efficient Monte Carlo Code for Proton Dose Calculation
H. Lee*, J. Shin, J. Verburg, H. Paganetti

 
PO-GePV-T-80 : Three-Dimensional Dose and LETd Prediction in Proton Therapy Using Artificial Neural Networks
F. Pirlepesov*, V. Moskvin, L. Wilson, A. Breuer, T. Merchant, A. Faught

 
PO-GePV-T-82 : Determination of Plan Deliverability and Treatment Time Estimation for Proton Pencil Beam Therapy Using a Machine Emulator Script
S. Mossahebi*, E. Makdsay Hana, J. Williams, B. Algawwam, A. Meijers, B. Yi

 
PO-GePV-T-83 : Characterizing the Entrance Dose Induced by a Dynamic Collimation System for Pencil Beam Scanning Proton Therapy Using a Commercial Multilayer Ionization Chamber
N. Nelson*, W. Culberson, B. Smith, R. Flynn, D. Hyer, P. Hill

 
PO-GePV-T-84 : Log File-Based Patient Specific Quality Assurance: 5 Years of Experience in Pencil Beam Scanning Pediatric Proton Therapy
O. Ates*, F. Pirlepesov, C. Hua, T. Merchant, L. Zhao

 
PO-GePV-T-85 : Feasibility of Delivering Exchanged PBS Treatment Plans in Two Gantries of Multiroom Proton Therapy System
C. Fang, Y. Huang, Y. Tao, L. Cao, G. Zhang, B. Qu, Z. Wang, Y. Zhang, S. Xu*

 
PO-GePV-T-86 : Quantitative & Statistical Analyses of Monthly OBI QA On Varian ProBeams
Z. Diamond*, A. Stanforth, R. Slopsema, K. Langen

 
PO-GePV-T-87 : Radiation Therapy Interference with Cardiovascular Implantable Electronic Devices; Comparison of Proton Beam Therapy Versus Intensity-Modulated Radiation Therapy
A. Anvari*, T. Alfonzetti, A. Butala, M. Carpenter, A. Kassaee, I. Paydar, J. Jones, D. Mihailidis

 
PO-GePV-T-88 : Output Estimation by Analytical and Machine Learning Models in a Double Scattering Proton System
J. Zhu*, T. Cui, Y. Zhang, Y. Zhang, C. Ma, B. Liu, K. Nie, N. Yue, X. Wang

 
PO-GePV-T-89 : Clinical Evaluation of Optically Stimulated Luminescence Dosimeters Dose Accuracy in Intensity Modulated Proton Therapy
J. Yu*, A. Wroe, A. Gutierrez

 
PO-GePV-T-90 : Influence of Beam Quality Correction Factors On Measurement Depth in Scanning Proton Beams Using Monte Carlo Calculation
M. Ichihara*, K. Yasui, C. Omachi, T. Toshito, J. Nagata, R. Oshika, S. Kurata, N. Hayashi

 
PO-GePV-T-91 : Adaptation of A
commercial Daily QA Device for Daily Spot Positioning QA

J. Kraus*, R. Cardan, K. McConnell

 
PO-GePV-T-92 : Evaluation of the PRESAGE Dosimeters for Spot- Scanning Proton Therapy
A. Xu*, H. Lin, C. Chen, Y. Wang, J. Adamovics, C. Wuu

 
PO-GePV-T-93 : Can An Ionization-Chamber Array Be Used for QA of Proton SBRT Beams?
A. Stanforth*, Z. Diamond, P. Sabouri, M. Zhu, J. Zhou, R. Slopsema

 
PO-GePV-T-94 : Novel Collimator for High-Throughput Proton FLASH-RT Murine Hemithorax Irradiations
S. Mossahebi, Y. Poirier*, A. Gerry, C. Repetto, Z. Vujaskovic, I. Jackson, A. Sawant

 
PO-GePV-T-97 : Optimizing Design And
commissioning of a Synchrotron Proton Beamline for FLASH Preclinical
experiments

U. Titt*, M. Yang, X. Wang, S. Lin, X. Zhu, K. Iga, N. Sahoo, A. Koong, X. Zhang, R. Mohan

 
PO-GePV-T-98 : Achievable Flash Dose-Rate by Cyclotron Based Proton Therapy Systems
S. Mossahebi, A. Sawant, J. Polf, E. Bentefour*

 
PO-GePV-T-99 : The Software Controller of Isocentric Rotation Chair Positioner for Treating Patients with Head/Neck Cancers in Fixed Carbon-Ion Beamline
W. Hsi*, X. Zhang, F. Yang, R. Zhou

 
PO-GePV-T-103 : Dosimetric Comparison of Intensity Modulated Radiation Therapy (IMRT), 3D Conformal Proton Therapy and Intensity Modulated Proton Therapy (IMPT) for Metastatic Brain Cancer
M. Sullivan*, S. Ahmad, H. Jin

 
PO-GePV-T-104 : Dosimetric Comparison of Volumetric Modulated Arc Therapy (VMAT), 3D Conformal Proton Therapy and Intensity Modulated Proton Therapy (IMPT) for Lung Cancer
M. Sullivan*, S. Ahmad, H. Jin

 
PO-GePV-T-105 : Dose-Averaged LET Evaluation in Head and Neck Adenoid Cystic Carcinoma Patients for Carbon-Ion Radiotherapy
R. Kohno*, S. Lee, A. Yamamoto, K. Yamaoka, M. Suga, M. Koto

 
PO-GePV-T-106 : Dose to Cardiac Implantable Electronic Devices in Patients Receiving Proton Beam Therapy
T. Alfonzetti, A. Anvari, A. Butala, M. Carpenter, A. Kassaee, I. Paydar, J. Jones, D. Mihailidis,

 
PO-GePV-T-107 : Dosimetric Comparison for Unfavorable Early Stage Lung Cancer: Intensity Modulated Proton Therapy Versus Volumetric Arc Photon Therapy
S. O'Reilly*, P. Singh, B. Hartl, E. Diffenderfer, K. Cengel, W. Levin, A. Berman, S. Feigenberg

 
PO-GePV-T-108 : Effective Treatment Plan Integrity Verification for Passive Scattering and Pencil Beam Scanning Proton Therapy
Y. Zhang*, M. Ho, C. Liu, X. Liang, P. Johnson, J. Park, M. Artz

 
PO-GePV-T-109 : Dosimetric Comparison of Pencil Beam Scanning Proton Plans with Different Aperture Modes
Y. Yuan*, D. Deblois, Y. Chen, C. Frame, D. Pang

 
PO-GePV-T-110 : Systematic Study of Penumbra Reduction with Adaptive Aperture for Hyperscan Spot Scanning Proton Beams
Y. Chen*, C. Frame, Y. Yuan, T. Ma, D. Pang

 
PO-GePV-T-111 : Reducing Beam Delivery Time for Proton PBS Treatment with Breath-Hold Motion Management Technique
M. Zhu*, A. Stanforth, Z. Diamond, Y. Lin, K. Langen

 
PO-GePV-T-113 : Monte Carlo Modeling of a Proton Portal Imaging System Using in Vivo Generated Neutrons
S. Thompson*, S. Samant, J. Nimmagadda, L. Maloney, E. Kryck

 
PO-GePV-T-114 : Initial Experience with a Head and Neck RapidPlan Model for Pencil Beam Scanning Proton Therapy
K. McConnell*, J. Snider, J. Nemec, R. Cardan

 
PO-GePV-T-115 : Should We Be Considering Biological Robustness in Proton Therapy?
A. Faught*, L. Wilson, M. Gargone, F. Pirlepesov, V. Moskvin, C. Hua

 
PO-GePV-T-116 : Assessment of A Knowledge-Based Planning for Robustly-Optimized Intensity Modulated Proton Therapy for Head and Neck Cancer
Y. Xu*, M. De Ornelas, J. Cyriac, E. Bossart, K. Padgett, M. Butkus, T. Diwanji, M. Samuels, N. Dogan

 
PO-GePV-T-117 : Knowledge-Based Planning for Robustly-Optimized Intensity Modulated Proton Therapy of Prostate Cancer
Y. Xu*, N. Brovold, E. Bossart, K. Padgett, M. Butkus, T. Diwanji, A. King, A. Dal Pra, M. Abramowitz, A. Pollack, N. Dogan

 
PO-GePV-T-118 : Assess the Interplay Effect Based On the Cyclotron Accelerator Proton Therapy System Machine-Specific Delivery Sequence Model
L. Zhao*, G. Liu, J. Shen, A. Lee, D. Yan, R. Deraniyagala, C. Stevens, W. Zheng, X. Li, S. Tang, X. Ding

 
PO-GePV-T-119 : Determination of Virtual Source Points for Mevion S250i Pencil Beam Scanning Proton System
Y. Chen*, C. Frame, T. Ma, Y. Yuan, D. Pang

 
PO-GePV-T-120 : Effects of the Activated Dental Metal Induced by Proton Beam Irradiation for Head and Neck Cancer: A Phantom Study
R. Kato*, T. Kato, T. Sagara, Y. Narita, K. Takayama, M. Murakami

 
PO-GePV-T-121 : Tuning, Calibration and Testing of a Dynamic Collimation System Controller for Pencil Beam Scanning Proton Therapy
K. Patwardhan*, T. Geoghegan, B. Smith, R. Flynn, D. Hyer

 
PO-GePV-T-122 : Dosimetric Investigation of Inverse-Optimized Proton GRID and Lattice Treatment Plans with a Clinical Pencil Beam Scanning System
M. Zhu*, H. Chen, J. Snider, W. Regine, J. Bradley, M. McDonald, P. Patel, P. Sabouri, K. Langen

 
PO-GePV-T-123 : Evaluation of Distorted Lateral Beam Profiles in MRI-Guided Proton Therapy
H. Ueda*, Y. Fujii, K. Umegaki, T. Matsuura

 
PO-GePV-T-125 : Monte Carlo Evaluation of Neutron Dose Equivalent Topatients Treated with Vertex Beams in IMPT and PSPT
U. Titt*, D. Grosshans, N. Sahoo, X. Zhu, R. Mohan

 
PO-GePV-T-126 : Novel Dynamic Apertures for Reducing Spot Sizes in Proton Therapy
J. Holmes*, S. Patel, W. Wong, R. Foote, W. Liu

 
PO-GePV-T-127 : Considerations in Lung SABR IMPT Using Two Different PBS Systems
H. Su*, W. Hsi, E. Brooks

 
PO-GePV-T-128 : Dynamically Collimated Spatially Fractionated (GRID) Pencil Beam Scanning Proton Therapy
B. Smith*, B. Allen, D. Hyer

 
PO-GePV-T-129 : Impact of Noise Level On the Analysis of Proton Exposed Targets
F. Saheli*, N. Vosoughi, Z. Riazi, H. Shahabinejad, F. Rasouli

 
PO-GePV-T-130 : A Preliminary Study of DECT- and Kernel-Based Dose Calculation Algorithm for Carbon Beam Therapy
W. Shin*, E. Yoon, B. Kim, S. Jung, J. Son, J. Park, J. Kim, C. Choi

 
PO-GePV-T-131 : Assessment of Metal Artifact Reduction in Dual-Layer Dual-Energy Computed Tomography for Carbon Ion Radiotherapy
S. Jung*, B. Kim, E. Yoon, J. Park, J. Kim, J. Son, C. Choi

 
PO-GePV-T-132 : Preliminary Investigation of the Dosimetric Impact of Common Dental Restorative Materials On Proton Beams
A. Gomez*, M. Leyva, L. Coutinho, E. Rosen, N. Kalman, M. Hobson

 
PO-GePV-T-133 : Wireless Device for Adaptive Planning Based Upon Thermoacoustic Range Estimates - Design and Benchtop Validation
S. Patch*, M. Narayanaswamy

 
PO-GePV-T-134 : Sensitivity of Target Coverage and Patient Specific IMPT QA to Spot Positioning Errors
S. Mossahebi*, P. Sabouri, B. Zhang, E. Makdsay Hana, J. Williams, S. Chen

 
PO-GePV-T-135 : Impact of Spot Position Uncertainties On Intensity Modulated Proton Therapy Plans for Head and Neck Cancers
P. Sabouri*, S. Mossahebi, B. Zhang, S. Chen

 
PO-GePV-T-136 : Impact of Esophageal and Biliary Stents On Proton Dose Calculation
S. Mossahebi*, P. Sabouri, G. Kim, J. Polf, J. Molitoris, B. Greenwald, P. Darwin, S. Chen

 
PO-GePV-T-137 : Non-Radioactive Elements for Prompt-Gamma Production Enhancement in Proton Therapy
P. Galanakou*, T. Leventouri, W. Muhammad

 
PO-GePV-T-138 : The Benefit of Novel Beam Arrangements Made Feasible by Range Uncertainty Reductions in Proton Therapy for Brain and Skull Base Tumors
S. Tattenberg*, T. Madden, B. Gorissen, T. Bortfeld, K. Parodi, J. Verburg

 
PO-GePV-T-139 : Incident Learning During the Early COVID-19 Pandemic
B. Chera*, K. Kujundzic, A. Raldow, J. Olsen, H. Demoss, S. Weintraub, B. Salter, S. Evans

 
PO-GePV-T-140 : Radiotherapy Prescription Quality
R. Larouche*, N. Lahaie, A. Veillette, T. Vu, S. Michalowski

 
PO-GePV-T-141 : Retrospective Review and Analysis of Treatment Planning Errors
M. Joo*, M. Lin, A. Godley, D. Sher, E. Chambers, C. Wallace, A. Pompos

 
PO-GePV-T-142 : Automated Plan Checking Software Demonstrates Continuous and Sustained Improvements in Safety and Quality: A 3-Year Longitudinal Analysis
S. Liu*, D. Stuhr, Y. Zhou, H. Pham, J. Xiong, J. Mechalakos, S. Berry

 
PO-GePV-T-144 : RAdiotherapy Dose Accumulation Routine (RADAR) - a Fast Dose Accumulation Tool for Planning with Previous Treatments
Y. Hu*, L. KUO, J. Mechalakos, L. Zhang, N. Shah, A. Ballangrud, A. Li, J. Deasy, L. Cervino, P. Zhang

 
PO-GePV-T-145 : Validation of Radiochromic.com Gamma Analysis Software
I. Mendez*, J. Rovira Escutia, B. Casar

 
PO-GePV-T-147 : Automated Verification of Treatment Parameter Transfer Between TPS and OIS Databases Via Direct Value Comparison
W. Donahue*, E. Draeger, D. Han, Z. Chen

 
PO-GePV-T-148 : Application of FMEA to Review and Analyze Software Error Messages
B. Miller*, S. Gardner, C. Smith, Z. Sun, N. Wen, I. Chetty

 
PO-GePV-T-149 : A Custom-Made Cassette for In-Water Film Dose Measurements and Quality Assurance of Cs-137 Blood Irradiators
H. Moktan Tamang*, S. Jayarathna, R. Tailor, S. Cho

 
PO-GePV-T-150 : Development of An In-House Off Axis Mechanical Isocentricity Test
J. Seekamp*, D. Pearson

 
PO-GePV-T-152 : Application of Automatic Plan Checking and Report Printing to Improve Clinical Workflow Accuracy and Efficiency
P. Yan*, D. Mynampati, S. Hsu, A. Basavatia, P. Brodin, C. Velten, W. Tomé

 
PO-GePV-T-153 : Towards Implementation of a Knowledge-Based Decision Support System for Treatment Plan Auditing Through Automation
S. Liu*, K. Ohri, J. Bertini, S. Berry, D. Yang, C. Della-Biancia

 
PO-GePV-T-154 : A Methodology and Open Source Tool for Radiotherapy Dose Transformation QA
H. Clark*

 
PO-GePV-T-155 : Challenges On Implementing An Hybrid AI-And-Rules Based Plan Check Tool in Clinical Practice - a Pilot Study
S. Luk*, E. Ford, M. Kim, M. Phillips, K. Hendrickson, A. Kalet

 
PO-GePV-T-156 : Development of An Automated Pre-Treatment Plan Evaluation
J. Rembish*, P. Myers, C. Kabat, N. Bice, K. Rasmussen, D. Saenz, N. Kirby, N. Papanikolaou, S. Stathakis

 
PO-GePV-T-157 : An End-To-End Test to Evaluate Off-Axis Targeting Accuracy for Single-Isocenter Multitarget Stereotactic Radiosurgery
C. Guthier*, S. Friesen

 
PO-GePV-T-158 : How AI Can Support Personalized Risk Mitigation During Automated Treatment Planning
M. Bach*, G. Spira

 
PO-GePV-T-159 : Failure Modes and Effects Analysis of Low Dose Bilateral Whole Lung Irradiation Treatment for COVID-19 Positive Patients Requiring Respiratory Ventilation
A. Swanson*, D. DiCostanzo, N. Gupta, K. Hintenlang, A. Cetnar

 
PO-GePV-T-160 : Failure Modes and Effects Analysis (FMEA) for Multi-Site, Multi-Institutional Deep Inspiration Breath Hold (DIBH) Treatments
M. Dimayorca*, S. Wadi-Ramahi, R. Lalonde, T. Wilhite, S. Ellsworth, A. Hays, M. Huq

 
PO-GePV-T-161 : Comparing Leakage Doses Between Three Gamma Knife Icon Machines
H. Wang, D. Luo*, R. Pino

 
PO-GePV-T-162 : Failure Mode and Effect Analysis for Volumetric Modulated Arc Therapy for Total Body Irradiation
T. Gray*, A. Antolak, S. Ahmed, A. Magnelli, L. Lu, Y. Cho, P. Xia, B. Guo

 
PO-GePV-T-163 : Efficiency Analysis of the Automatic Plan Printing Application
J. Park*, K. O'grady, L. KUO, W. Fong, W. Yan, R. Lalonde, L. Cervino

 
PO-GePV-T-164 : Sources of Systemic and Random Errors in Bleached Optically Stimulated Luminescence Dosimeter (OSLD) In-Vivo Measurements: A Retrospective Clinical Study
S. Yoon*, H. Lin, C. Kennedy, D. Mihailidis, B. Burgdorf, T. Li

 
PO-GePV-T-165 : The Use of Statistical Process Control Methods to Evaluate Patient-Specific Delivery QA Failure as a Function of Plan Complexity
R. Price*, I. Veltchev, T. Lin, A. Eldib, C. Ma

 
PO-GePV-T-166 : Variability of Control Limits for Mean Percent Dose Differences Across Different Anatomical Contours
H. Mehrens*, R. Douglas, M. Gronberg, K. Nealon, L. Zhang, L. Court

 
PO-GePV-T-167 : An Investigation of a Statistical Process Control Based Quality Assurance for Optical Stimulated
Luminescence Detector (OSLD) System

K. Episcopia, R. Febo, D. Lovelock, L. Cervino, S. Lim*

 
PO-GePV-T-168 : 4D Monte Carlo Assessment of the Impact of Inter- and Intra-Fractional Respiratory Motion Variation On Delivered Dose
M. Shiha*, J. Cygler, R. Macrae, E. Heath

 
PO-GePV-T-169 : Dosimetric Impact On VMAT Plan Delivery From Tumor Motion Variations Due to Breathing Irregularities
A. Sehovic*, P. Shukla, L. Xu, X. Nie, Y. Zhou, L. Zhang, P. Wang, A. Wu, A. Rimner, P. Zhang, G. Li

 
PO-GePV-T-170 : A Practical Workflow to Streamline Treatment Planning for Reirradiation with Considering Biological Doses
A. Tai*, E. Quashie, E. Gore, J. Bovi, X. Li

 
PO-GePV-T-171 : Daily Portal Exit Dosimetry Images as a Way to Monitor Interfractional Dosimetric Variation: A Feasibility Study
A. Haertter*, E. Hubley, S. Yoon, T. Li, W. Gu, C. Kennedy

 
PO-GePV-T-172 : Initial Experience with Varian Portal Dosimetry Patient-Specific QA
J. Wong*, S. Wisnoskie, W. Nie, Y. Lei, A. Besemer

 
PO-GePV-T-173 : Long-Term Monitoring of ASi-1200 EPID Performance
I. Kutuzov*, R. Rivest, E. Van Uytven, B. McCurdy

 
PO-GePV-T-174 : Machine Learning Based Prediction for Patient-Specific Quality Assurance: Understand the Plan Complexity for VMAT
X. Zhang*, Y. Zhang, B. Liu, N. Yue, K. Nie

 
PO-GePV-T-175 : Quantitative Comparison of 2D and 3D Modes of a Commercial EPID-Based Hybrid Patient-Specific QA System for Spine SBRT Treatments
S. Ahmed*, J. Zavala Bojorquez, P. Qi, S. Chao, E. Murphy, J. Suh, P. Xia

 
PO-GePV-T-176 : Comparison of Pixel Sensitivity Map Methods for EPID Dosimetry Measurement
M. Ahmed*, N. Dang, V. Leandro Alves, J. Siebers

 
PO-GePV-T-177 : A New Generation of X-Ray Irradiator for Preclinical Research: Dosimetric Characterization
M. Rezaee*, J. Wong

 
PO-GePV-T-178 : An Improved Statistical Model for Gamma Index Pass Rates in Intensity Modulated Radiation Therapy Patient-Specific Quality Assurance
P. Jensen*, W. Donahue, Z. Chen

 
PO-GePV-T-179 : EBT3 Film Calibration Using Deep Learning with Keras Functional API
L. Chang*

 
PO-GePV-T-180 : Longitudinal Shift Limitation for Long-Field Delta4 Measurements
L. Che Fru*, S. Frigo

 
PO-GePV-T-181 : Initial Experience in Comparing IQM and SRS MapCHECK for Single ISO Multiple Mets Brain SRS/SRT Plan Quality Assurance
Y. Liang*, D. Pavord, H. Lee, Z. Horne, R. Wegner, S. Karlovits, J. Sohn

 
PO-GePV-T-182 : Clinical Implementation of Varian TrueBeam Portal Dosimetry: Comparison to Sun Nuclear MapCHECK2 for Patient-Specific Quality Assurance
S. Roles*, B. Broekhoven, W. Godwin, A. Rapchak, C. Mart, D. McDonald, G. Owen, M. Maynard, J. Peng, K. Fallon

 
PO-GePV-T-183 : Extraction of a Large Dataset Populating the Gamma Criteria Parameter Space for EPID-Based Patient-Specific QA
P. Brown*, S. Tanny, D. Rosenzweig

 
PO-GePV-T-184 : Development of a User-Friendly Correction Method for the Lateral Response Artifact From Flatbed Scanners in Radiochromic Film Dosimetry
G. Guyer*, R. Kueng, A. Joosten, M. Fix, P. Manser, S. Mueller

 
PO-GePV-T-185 : Stereotactic Patient QA Evaluation Between MapCheck SRS 2D Array, Electronic Portal Image Dose (EPID) and EBT3 Gafchromic Film Dosimetry
P. Tsiamas*, W. Cruz, W. Fontenot, J. Limmer

 
PO-GePV-T-187 : Validation of Rapid Arc Gating Technique for Lung and Liver Stereotactic Body Radiation Therapy (SBRT) with In-House 4D-Phantom
C. Bhatt*, A. Kumar, R. Dobhal

 
PO-GePV-T-188 : A Convolutional
neural Network Model for Predicting Gamma Passing Rate of 3D Array Detector-Based VMAT QA

T. Matsuura*, D. Kawahara, A. Saito, E. Shiba, K. Yamada, S. Ozawa, Y. Nagata

 
PO-GePV-T-189 : Machine- and Site-Specific Analyses of TomoTherapy Patient-Specific QA Results Planned with Accuray Planning Station and RaySearch RayStation
P. Hill*, R. BAYLISS

 
PO-GePV-T-190 : Quasi-3D Dosimetry System with Solid Polyurethane-Based Dosimeter
J. Cho*, S. Jung, J. Son, H. Jin, C. Choi, J. Park, J. Kim

 
PO-GePV-T-191 : Utilization of a Plan Quality Prediction Software to Investigate Patient Specific QA Passing Rates
P. Irmen*, C. Stambaugh, C. Melhus

 
PO-GePV-T-192 : Design of a Respiratory Motion Quality Assurance System
with Portal Dosimetry and Customizable Tumor Phantom

H. Tan*, L. Tan, C. Koh, K. Ang, S. Park

 
PO-GePV-T-193 : Automatic Plan Quality Assurance Using Knowledge-Based DVH Prediction for Head and Neck Cancer Patients
W. Cao*, M. Gronberg, A. Olanrewaju, C. Cardenas, B. Beadle, L. Court

 
PO-GePV-T-194 : Estimation of Dosimetric Leaf Gap Correction Factor as Part of Commissioning a Log File Based QA System
S. Unnikrishnan*, S. Neelakandan Sukumari, P. Raghukumar

 
PO-GePV-T-195 : Sensitivity of OSLD with Fully Filled Deep Electron/hole Traps in Kilovoltage Energy Range
M. Chun*, H. Jin, S. Lee, O. Kwon, C. Choi, J. Park, J. Kim

 
PO-GePV-T-196 : Measuring Superficial Total Doses Delivered by Helical Tomotherapy
using EPR Dosimetry

S. Höfel*, M. Fix, M. Drescher, F. Zwicker

 
PO-GePV-T-197 : Evaluating the Accuracy of Different Methods for Estimating the Dose to An IMD (implanted Medical Device) of a TBI Patient, Treated at An Extended Distance with External Blocks
L. Russell*, J. Sillanpaa

 
PO-GePV-T-198 : Dosimetric Evaluation of Prostate VMAT Plans Optimized by the Photon and Progressive Resolution Optimization Algorithm
J. Chow*, R. Jiang, K. Mamaril

 
PO-GePV-T-201 : Automated and Clinical-Criteria-Driven Planning for Locally Advanced Non-Small-Cell Lung Cancer Using the Expedited Constrained Hierarchical Optimization (ECHO) System
Q. Huang, L. Hong, Y. Zhou*, G. Jhanwar, J. Yang, H. Pham, E. Yorke, L. Cervino, J. Deasy, M. Zarepisheh

 
PO-GePV-T-202 : Monitor Unit Efficient VMAT Treatment Planning Facilitated by the MU Objective Tool
M. Ashenafi*, M. Hare, C. Rothfuss, H. Zhang

 
PO-GePV-T-204 : Sparing Lung Tissue with Virtual Block Method in VMAT Planning for Locally Advanced Non-Small Cell Lung Cancer
J. Chen*, J. Dai

 
PO-GePV-T-206 : Using a Novel Leaf Sequencer and Segment Shape Optimization Algorithm to Reduce Treatment Session Times On the Elekta Unity
J. Snyder*, J. St-Aubin, S. Yaddanapudi, S. Strand, S. Kruger, R. Flynn, D. Hyer

 
PO-GePV-T-207 : Volumetric Dose Reconstruction for Iso-Dose Tuning
L. Ma*, M. Chen, X. Gu, W. Lu

 
PO-GePV-T-208 : A Multi-Staged Treatment Planning Framework for Large-Volume Ventricular Tachycardia Stereotactic Ablative Radiotherapy
X. Gu*, R. Timmerman, J. Daniels, R. Wu, W. Lu

 
PO-GePV-T-209 : An Evaluation of Complex Plan Quality Using RayStation’s Collapsed Cone Convolution (CCC) Algorithm as a Function of Differing Hardware Given a Time Constraint
E. DeLuca*, N. Sperling

 
PO-GePV-T-211 : Dosimetric Differences of Plans Using Flattened 6MV Versus Flattening-Filter-Free 10MV Beams for the Treatment of Prostate with and Without Seminal Vesicles
M. Ashenafi*, C. Rothfuss, A. Gray, H. Zhang

 
PO-GePV-T-212 : Evaluation of Elekta Unity IMRT Beam Complexity Using a Novel Leaf Sequencer and Shape Optimizer in the Monaco Treatment Planning System
J. St-Aubin*, J. Snyder, S. Yaddanapudi, R. Flynn, D. Hyer

 
PO-GePV-T-213 : Sub-Segmentation of Laryngopharynx Whole-Mean Dose Constraints for Reducing Intra-Organ Dose Variability
C. Sample*, H. Clark

 
PO-GePV-T-216 : Dosimetric Impact in GNP-Enhanced Radiotherapy Using the 10 MV FF and FFF Photon Beams: A Monte Carlo Depth Dose Study
J. Chow*

 
PO-GePV-T-217 : A Study of Surface Dosimetry for Whole Breast Irradiation Geometry Using EBT3 Gafchromic Film and Monte Carlo Simulation
S. Su*, E. Carpentier, C. Duzenli

 
PO-GePV-T-218 : Dosimetric Considerations of Modable Silicones for Radiotherapy Boluses and Phantoms
G. Aldosary*, J. Belec, C. Foottit, E. Vandervoort

 
PO-GePV-T-219 : Feasibility of 18-MV Grid Therapy From the View of Radiation Protection
A. Karimi, X. Wang*, S. Mirian, H. Vega-Carrillo, M. Mohiuddin

 
PO-GePV-T-220 : Impact of Depth-Induced Spectrum Change On the Dose Enhancement of Gold Nanoparticle Aided Radiotherapy at Megavoltage Energy
R. Schmidt*, J. Shi, J. Ford, D. Hara, N. Dogan, A. Pollack

 
PO-GePV-T-221 : Validation of the Monte Carlo Model of a Novel Biology-Guided Radiotherapy (BgRT) Linac
M. Shi*, K. Bush, C. Chuang, D. Zaks, L. Xing, N. Kovalchuk, M. Surucu, B. Han

 
PO-GePV-T-222 : Focal Spot Size Effect of the RefleXion X1 Radiotherapy Machine: A Monte Carlo Simulation Study
O. Oderinde*, D. Zaks, C. Huntzinger, S. Shirvani, T. Laurence, M. Lu

 
PO-GePV-T-223 : Evaluating Backscattered Radiation Into the Dose Monitor Chamber in the RefleXion X1 Using Monte Carlo Simulation
O. Oderinde*, D. Zaks, C. Huntzinger, S. Shirvani, A. Maniyedath, T. Laurence, M. Lu

 
PO-GePV-T-224 : On the Determination of Source Parameter Probability Distribution Functions During the Monte Carlo Modeling of a CyberKnife M6 Unit
J. Duchaine*, D. Markel, H. Bouchard

 
PO-GePV-T-225 : KQ Calculations of the ZAP-X Radiosurgical Device
R. Townson*, F. Tessier, G. Weidlich, D. Pang, M. McEwen

 
PO-GePV-T-226 : Characterization of Phosphorescent Strontium Aluminate as a Real-Time Dosimeter
S. Drehmel*, D. Mathew, E. Ehler

 
PO-GePV-T-228 : Evaluation of a Scripted Planning Technique in Lung SBRT
J. Donaghue*, S. Gajdos, L. Muhieddine Mossolly

 
PO-GePV-T-229 : Retrospective Study of a Novel Automated Software for the Evaluation of Hypofractionated Treatment Plans Using Conventional Constraints
D. Baldassari*, C. Esquivel, L. Patton, A. Tipton, T. Roberts

 
PO-GePV-T-231 : An Evaluation of An EQD2 Conversion Via Commercially-Available Software for Hypofractionated Treatment Plan Tolerances: A Retrospective Study
D. Baldassari*, L. Patton, T. Roberts, A. Tipton, C. Esquivel

 
PO-GePV-T-232 : Evaluation of Bladder Dosimetric Property for Localized Prostate Cancer Using Deformable Registration of Simulation CT
C. Ma*, X. Zhang, Y. Zhang, N. Yue, X. Wang

 
PO-GePV-T-233 : Dosimetric Comparison of VMAT Prostate Plans Designed with 10MV Vs 18MV Photon Beams
D. Shvydka, M. Hajduk*

 
PO-GePV-T-234 : Evaluation of Two Different Dose Calculations Algorithms Between Two Treatment Planning Systems
J. Martinez*, H. Soysal, C. Yang

 
PO-GePV-T-235 : Can a Seven-Day Subset of CBCTs Be Representative of All CBCTs When Reconstructing the Dose Delivered Over the Entire Course of Treatment for Prostate Bed Radiotherapy?
D. Soliman*, M. Noy, M. Karp, A. Dal Pra, E. Bossart

 
PO-GePV-T-237 : Overlapping Volume Histogram (OVH) as a Tool for OAR Delineation Outliers Detection and DVH Prediction
T. Teo*, M. Gopalakrishnan, D. Cutright, I. Das

 
PO-GePV-T-238 : To Assess the Impact of Bowel Gas Override On Pelvis Treatment Plans: Case Studies
V. Chaswal*, S. Davis, J. Contreras, R. Tolakanahalli

 
PO-GePV-T-239 : API Driven Plan Scorecard Designer for the Evaluation of External Beam Planning Quality
M. Schmidt*, M. Folkerts, C. Abraham, B. Baumann, N. Knutson, F. Reynoso, E. Pryser, E. Sajo, P. Zygmanski, M. Jandel, A. Magliari

 
PO-GePV-T-240 : The Use of Daily Transit Dosimetry to Monitor Anatomy Changes and Setup Errors in Prone Breast Radiotherapy
X. Shen*, S. Hsu, D. Mynampati, P. Brodin, A. Basavatia, J. Fox, W. Tomé

 
PO-GePV-T-242 : A Comparison of Modulated Planning Techniques for Whole Brain Hippocampal-Avoidance Radiotherapy
E. Viviers*, P. Johnson

 
PO-GePV-T-243 : Dosimetric Comparison of the New Pinnacle Evolution Versus Pinnacle Version 16.2
M. Naessig*, N. Kirby, B. Brown, C. Kalu, A. Woodin, J. Gonzales, N. Reyes Iii, P. Myers

 
PO-GePV-T-244 : Investigating the Differences Between PlanIQ and IPA Planning Tools for Plan Optimization in Head & Neck Cancers
C. Kabat*, S. Stathakis, H. Parenica, N. Papanikolaou, S. Das, B. Chera, P. Mavroidis

 
PO-GePV-T-245 : Preliminary Patient Specific Dose Constraints of Rectum for Prostate Cancer Treatment
J. Zhang*, B. Lee, W. Inouye, R. Kwon, W. Lien

 
PO-GePV-T-247 : Planning Strategies for Whole Head-And-Neck Radiation with Robustness Against Shoulder Motion Using Volumetric-Modulated Arc Therapy
J. Cammin*, T. Bouton, E. Chacko, B. Zhang, S. Chen, J. Molitoris, B. Yi

 
PO-GePV-T-248 : Dosimetric Study for Spine SRT Plans with Carbon Fiber Stabilization Devices
H. Lee*, J. Palmer, A. Ayan

 
PO-GePV-T-249 : The Feasibility Study of Using Light Detection and Ranging (LiDAR) Application for Total Body Irradiation (TBI)
B. Yeager*, F. Mostafaei, M. Gagne, J. Barrett, A. Al-Basheer

 
PO-GePV-T-251 : Conformal Radiotherapy with Sequential Boost Versus Intensity-Modulated Radiation Therapy with a Simultaneously Integrated Boost
G. Komisopoulos*, M. Tolia, A. Siountas, S. Stathakis, N. Papanikolaou, P. Mavroidis

 
PO-GePV-T-252 : Dosimetric Impact of Multi-Leaf Collimator Positional Errors On Standard-Fractionated and Hypofractionated Radiotherapy Using Flattened and Flattening Filter-Free Beams
H. Enomoto*, Y. Fujita

 
PO-GePV-T-253 : Treatment of Large-Size Prostate Cancer Patients On An O-Ring Linac with 6MV FFF: Plan Quality Comparison with a C-Arm Linac Using 10MV Or 15MV Photons
B. Liu*, C. Cheng, X. Wang, J. Zhu, R. Parikh, K. Nie, N. Yue, Y. Zhang

 
PO-GePV-T-254 : The Future Is Here: An Inter-Comparative Study of AI and Human-Generated Plans Using Dosimetric Indices as a Guide to Plan Efficacy
S. Pokharel*, A. Pacheco, S. Tanner

 
PO-GePV-T-255 : Are Auto-Generated Organ-At-Risk Contours Good Enough in Prostate Radiotherapy?
H. Liu*, B. Sintay, D. Wiant

 
PO-GePV-T-256 : Dosimetric Effects Due to Inter-Observer Variability of Organ Contouring When Utilizing a Knowledge-Based Planning System for Prostate Cancer
H. Liu*, C. Amaloo, B. Sintay, D. Wiant

 
PO-GePV-T-257 : A Single Institution Evaluation of a Machine Learning Based Decision Support Software for Head and Neck Radiotherapy
L. Zhuang*, E. Bowers, M. Pankuch, M. Posner

 
PO-GePV-T-258 : An Unsupervised Method for Error Detection of Treatment Plan in Radiotherapy
Z. Song*, H. Yan, J. Dai

 
PO-GePV-T-260 : Patient Treatment Transferability Between Unmatched Medical Linacs
J. Foy*, S. Kucuker Dogan, I. Das

 
PO-GePV-T-261 : Development of a Progressive Plan Quality Evaluation Solution
J. Neylon*, J. Hegde, S. Mccloskey, J. Lamb

 
PO-GePV-T-262 : A Retrospective Study to Establish Recommendations for Plan Quality Metrics in Linac Lung SBRT
S. Taghizadehghahremanloo, F. Akbari*, D. Pearson

 
PO-GePV-T-263 : Evaluation of Treatment Plan Uncertainties for VMAT TBI
I. Duarte*, P. Galavis, N. Gerber, D. Barbee, J. Teruel

 
PO-GePV-T-264 : Three-Year Experience with Active Breathing Coordinator Device Used in Reducing Radiation Dose to the Heart in Left-Sided Whole Breast Cancer Patients
R. Gupta*, M. Huq

 
PO-GePV-T-265 : Investigating the Level of Dose Trade-Offs Between Left Lung and Heart in Lung Cancer Cases to Identify Optimal Sparing
K. Pant*, G. Komisopoulos, J. Dooley, K. Wang, A. Weiner, S. Das, P. Mavroidis

 
PO-GePV-T-266 : Automated and Clinical-Criteria-Driven IMRT Planning for Prostate Using Expedited Constrained Hierarchical Optimization (ECHO)
Y. Zhou*, L. Hong, Q. Huang, G. Jhanwar, J. Yang, H. Pham, L. Happersett, A. Damato, L. Cervino, J. Deasy, M. Zarepisheh

 
PO-GePV-T-268 : Evaluation of Initial Planning Techniques in Ethos for Adaptive Head and Neck Patients
N. Nasser*, J. Caudell, E. Moros, V. Feygelman, G. Redler

 
PO-GePV-T-269 : Analyzing Performance of Atlas-Based and Deep Learning-Based Auto-Segmentation in Breast Cancer Patients
M. Weiland*, K. Kisling

 
PO-GePV-T-272 : Implementation of An Automated Workflow for Planning Tangential Breast Radiotherapy
T. Keiper*, D. Hoffman, K. Kisling

 
PO-GePV-T-273 : Adequacy of Target Volume Drawn Based On "slow" CT Scan for SBRT Lung Treatment in Helical TomoTherapy
S. Awan*, S. Burt, R. Badkul, A. Meigooni

 
PO-GePV-T-274 : Interpolation of Dose Planes for Use in the Optimization of Multi-Leaf Collimator Dosimetric Leaf Gap and Transmission
D. DiCostanzo*, A. Ayan

 
PO-GePV-T-275 : Accounting for Dose Accumulation Uncertainty in Spine Reirradiation
L. Zhang, N. Shah, Y. Hu, P. Zhang, A. Ballangrud, J. Deasy, L. Cervino, L. KUO*, J. Mechalakos

 
PO-GePV-T-276 : Determining the Optimal Assigned Density for Various High-Density Prostheses Calculated with AcurosXB and AAA
H. Genco*, S. de Boer

 
PO-GePV-T-277 : Implementing Recommendations of TG 329
E. Sudentas*, L. Fu, C. Teng

 
PO-GePV-T-278 : A Hybrid Full-Body Image Set Generation for TBI Using Both CT and 3D Optical Imaging
H. Jung*, S. Kim

 
PO-GePV-T-279 : PenMRT: A Multi-Scale Dose Calculation Engine for Microbeam Radiation Therapy
S. KESHMIRI*, S. Brocard, N. Rosuel, R. Serduc, J. Adam

 
PO-GePV-T-280 : Evaluation of Beam Data Correspondence for Five TrueBeam Linear Accelerators
S. Gardner*, C. Smith, B. Miller, N. Wen, I. Chetty

 
PO-GePV-T-281 : Solving Beam Orientation Optimization (BOO) of IMRT Treatment Plan Using Tree Embedded Reinforcement Learning for Prostate Cancer
A. Sadeghnejad Barkousaraie*, A. Balagopal, G. Bohara, S. Jiang, D. Nguyen

 
PO-GePV-T-282 : Clinical Impact of the Dose Calculation Engine for Vestibular Schwannoma Treatments On Cyberknife
E. Ali*, E. Vandervoort

 
PO-GePV-T-283 : Improved Dose Prediction Performance with Data Clustering and Transfer Learning On H&N Cancer Patients
D. Nguyen*, T. Bai, A. Sadeghnejad Barkousaraie, R. McBeth, A. Balagopal, S. Jiang

 
PO-GePV-T-284 : Feasibility Study of a Novel and Efficient Treatment Planning Technique for Total Body Irradiation and Total Marrow Irradiation On Conventional Linacs
C. Han*, S. Dandapani, J. Wong, A. Liu

 
PO-GePV-T-285 : Generalizability Study On a Deep Learning-Based Dose Conversion Model
X. Zhong*, Y. Xing, M. Lin, S. Jiang, Y. Zhang

 
PO-GePV-T-286 : Dosimetric Evaluation of Dose Accumulation in MIM and Pinnacle System
M. Liu*, I. Xhaferllari, J. Liang, D. Lack, M. Snyder

 
PO-GePV-T-287 : Knowledge-Based Planning Assisted Automatic Prostate Cancer Radiation Treatment Planning
L. Chen*, Z. Xiong, A. Godley, S. Jiang, M. Lin

 
PO-GePV-T-288 : Dose Evaluation of Deep Inspiration Breath-Hold On the Left Anterior Descending Coronary Artery for Left-Sided Breast Irradiation
A. Kwag*, J. Jung

 
PO-GePV-T-289 : Discrepancies in Out-Of-Field Dose Prediction Between Treatment Planning Systems
T. Tyson*, M. Mistro, A. Kubli, A. Harrison, K. Mooney

 
PO-GePV-T-290 : Investigation of the Dosimetric Effects of An SBRT Positioning System
D. Baldassari*, C. Esquivel, K. Andrews, L. Patton

 
PO-GePV-T-291 : The Impact of Treatment Planning System Errors On Patient Dose Delivery
F. Brooks*, M. Glenn, J. Pollard-Larkin, R. Howell, C. Peterson, C. Nelson, C. Clark, S. Kry

 
PO-GePV-T-292 : Dose Prediction Using Three-Dimensional Convolutional Neural Network for Nasopharyngeal Carcinoma with Tomotherapy
Y. Liu, G. Zhang, Z. Chen, J. Wang, X. Wang, B. Qu, S. Xu*

 
PO-GePV-T-293 : ROI Contour Based Deep Learning AAA Dose Improvement Method
Z. Wang*, Q. Zhou, Y. Liu, Z. Chen, B. Yang, J. Qiu

 
PO-GePV-T-294 : The Effect of Contrast Agents On Dose Calculations in Volumetric Radiotherapy for Critical Structures
S. Almohsen*, A. Elawadi, M. Alshanqity, H. Alassaf, R. ELGENDY, H. Allazkani, R. Mohamed

 
PO-GePV-T-295 : A Simple Method for Accurate Multi-Target Winston-Lutz Testing
G. Gilson*

 
PO-GePV-T-296 : Physics Quality Assurance: A Pilot Survey of Global Needs
A. Yorke*, E. Ford

 
PO-GePV-T-297 : Accelerator Beam Data Variability with Detectors
S. Kucuker Dogan*, M. Gopalakrishnan, I. Das

 
PO-GePV-T-299 : Toward Ending the Manual Annual: Lessons Learned From the Expansion of An Automated Output Quality Assurance Technique to Outside Institutions
L. LeMerise*, E. Morris, B. Loughery

 
PO-GePV-T-300 : An Innovative Water-Equivalent Solid Device for Beam Scanning to Replace Computerized 3D Water Scanning Systems
K. Xie*, D. Shvydka, N. Sperling, E. Parsai

 
PO-GePV-T-302 : API Assisted Treatment Planning System Validation for Medical Linear Accelerators
M. Schmidt*, N. Knutson, B. Sun, E. Sajo, P. Zygmanski, M. Jandel, G. Hugo, J. Kavanaugh, F. Reynoso

 
PO-GePV-T-303 : Independent Evaluation of MPC Using Winston-Lutz Test
W. Luo*, M. Halfman

 
PO-GePV-T-304 : Quantification of Peripheral Dose in the New Ring-Gantry RefleXion X1 Radiotherapy Machine
O. Oderinde*, S. Khan, M. Narayanan, A. Maniyedath, S. Shirvani, G. Kuduvalli

 
PO-GePV-T-307 : Validation of Non-Isocentric Delivery and Analysis of VMAT QA Plans Using ArcCHECK
G. Cui*, N. Walls, N. Eclov, J. Duan

 
PO-GePV-T-308 : On the Performance of LINAC Annual Quality Assurance Without the Need for a 3D Water Tank
H. Kadji*, B. Lewis, R. Teboh Forbang

 
PO-GePV-T-309 : Small Field Dosimetry of a Novel Biology-Guided Radiotherapy System
B. Han*, N. Kovalchuk, M. Shi, K. Bush, D. Capaldi, D. Breitkreutz, E. Simiele, L. Xing, M. Surucu, C. Chuang

 
PO-GePV-T-310 : A Novel Method to Verify Deformable Dose Accumulation for Patients Treated with Helical Tomotherapy
H. Zhong*, J. García Alvarez, K. Kainz, G. Chen, A. Tai, E. Ahunbay, X. Li

 
PO-GePV-T-313 : Second Dosimetry Check with Deep DoseNet
P. Dong*, L. Xing

 
PO-GePV-T-314 : Validation of ClearCalc Photon Secondary Check Dose Calculation Algorithm
J. Wong*, Y. Lei, S. Wisnoskie, A. Granatowicz, S. Wang, A. Besemer, M. Hyun, S. Zhou, C. Enke, Q. Fan

 
PO-GePV-T-315 : Comparison of Secondary MU Calculation Softwares for Clinical Use: RadCalc and ClearCalc
H. Lee*, A. Pompos, M. Lin

 
PO-GePV-T-316 : Modulation Area Index (MAI): A Plan-Specific Metric for Quantifying VMAT Modulation Complexity
B. Wu*, R. Gonzales, J. Qian, L. Lin, J. Yu, H. Li, S. Han-Oh

 
PO-GePV-T-317 : The Impact of Flattening Filter Free On Remaining Volume at Risk in Lung Cases for VMAT and IMRT Techniques
M. Alfishawy*

 
PO-GePV-T-318 : Field Junction Technique for Total Body Irradiation Using Tomotherapy with TomoDirect Mode
Y. Suetsugu*, N. Higashi, Y. Fukuyama, K. Inoue, K. Matsumoto, H. Terashima, T. Sasaki

 
PO-GePV-T-319 : Commissioning and Clinical Implementation of Pseudo 4Pi On An MR-Guided Radiotherapy (MRgRT) Linac
J. McCulloch*, A. Gutierrez, T. Romaguera, D. Alvarez, K. Mittauer

 
PO-GePV-T-320 : Dosimetric Analysis of ElastoGel Bolus
M. Pacella*, M. Webster, S. Tanny

 
PO-GePV-T-321 : Validation of Spatial Fractionated GRID Treatment Planning Using Volumetric Modulated Arc Therapy (VMAT)
C. Collins*, M. Schwer, M. Keefe, D. Wazer, G. Cardarelli

 
PO-GePV-T-322 : Treatment Planning and Verification for Radiodynamic Therapy Using 45 MV Beams
A. Eldib*, J. Liu, C. Ma

 
PO-GePV-T-323 : Dosimetric Impact of Materials Override of Hydrogel Spacer in Stereotactic Body Proton Therapy (SBPT) for Locally Advanced Pancreas Cancer (LAPC)
D. Han*, H. Hooshangnejad , W. Yao, J. Jatczak, K. Ding

 
PO-GePV-T-324 : Quantifying the Dosimetric
effect of Tumor Treating Fields (TTF) Transducer Arrays: Is a Correction Needed?

K. Kelly*, I. Alecu, N. Papanikolaou, N. Kirby, P. Myers, D. Saenz, S. Stathakis, K. Rasmussen

 
PO-GePV-T-326 : An Investigation Into the Dosimetric Properties of a Three-Dimensional (3D) Printing Material for Potential Use in Radiation Therapy
K. Bittinger*, N. Sperling

 
PO-GePV-T-327 : Volumetric Axillary Boost (VMAB): Novel Planning for Nodal Coverage in Breast/Chestwall Patients
W. Duggar*, B. Eske, D. Deng, H. Soysal, C. Yang

 
PO-GePV-T-328 : Development of a Collision Prediction Tool Between Gantry and Table Using Blender
G. Guyer*, Y. Wyss, J. Bertholet, P. Mackeprang, H. Loebner, M. Fix, P. Manser, M. Stampanoni, S. Mueller

 
PO-GePV-T-329 : Preliminary Treatment Planning System Commissioning Results for the First Clinical Biology-Guided Radiotherapy Machine
N. Kovalchuk*, B. Han, E. Simiele, D. Capaldi, D. Breitkreutz, T. Yeung, J. White, D. Zaks, M. Owens, S. Maganti, A. Purwar, L. Vitzthum, D. Chang, L. Xing, M. Surucu

 
PO-GePV-T-330 : Capacity Assessment of African Clinics to Conduct Hypofractionated Radiotherapy Clinical Trials for Localized Prostate Cancer
W. Swanson*, M. Lavelle, V. Ainsworth, N. Bih, D. Seymour, W. Ngwa

 
PO-GePV-T-331 : Photoelectric Dose-Enhancement Using FDA-Approved Materials
W. Swanson*, Y. Hao, W. Ngwa

 
PO-GePV-T-332 : Comparing Ideal and Realistic Surrogate Motions with the Radixact Synchrony System
K. Jeong*, L. Goddard, W. Tomé

 
PO-GePV-T-333 : End-To-End Testing of Hybrid VMAT-Based Total Body Irradiation Technique: Simulation, Planning and Delivery Verifications
S. Ahmed*, T. Gray, L. Lu, P. Xia, B. Guo

 
PO-GePV-T-334 : Pre-Treatment 4DCT Fiducial Marker Combination Selection for Robotic Lung SBRT
W. Belcher*, A. Ju, J. Jung

 
PO-GePV-T-335 : Prediction of Fiducial Marker Positions in Robotic SBRT Using 4D-CTs at Different Treatment Dates
J. Jung*, W. Belcher, K. Patel, E. Patel, K. Yang, S. Sharma, A. Ju

 
PO-GePV-T-336 : The 4D Composite Dose Study of the Breath Motion Effect During the Lung Stereotactic Body Radiotherapy (SBRT)
Z. Xia*, F. Wang, Y. Xu, J. Xu

 
PO-GePV-T-337 : Effect of Target Positioning Error On Tumor Control Probability in Stereotactic Radiosurgery for Metastatic Brain Tumors Using the CyberKnife M6
T. Takizawa*, S. Tanabe, H. Nakano, S. Utsunomiya, M. Sakai, K. Maruyama, S. Takeuchi, T. Nakano, A. Ohta, M. Kaidu, H. Ishikawa, K. Onda

 
PO-GePV-T-338 : Predicting the Effect of Indirect Cell Kill for Radiosurgery of Multiple Brain Metastases Via Single-Isocenter/Multi-Target Volumetric Modulated Arc Therapy (SIMT-VMAT)
A. Palmiero*, D. Fabian, M. Randall, W. St Clair, D. Pokhrel

 
PO-GePV-T-339 : Treating Vestibular Schwannomas Abutting the Brainstem with SRS/fSRS Alone
M. Keohane*, Z. Whiting, D. Koffler, A. Goenka, E. Calugaru, J. Chang

 
PO-GePV-T-340 : Evaluation of Three Dosimeters On Output Factor Measurement of the New Aktina SRS Cone System
L. Zhuang*, M. Gao, M. Pankuch, M. Xu, G. Pixton, C. Breit

 
PO-GePV-T-341 : A Multi-Clinic Validation of An End-To-End Procedure for MLC-Based Stereotactic Radiosurgery with a Novel Phantom
T. Brown*, J. Fagerstrom, C. Beck, C. Holloway, J. Kerns, D. Kaurin, K. Kielar

 
PO-GePV-T-342 : Consistency in Response Between Two Copies of a High-Resolution Diode Array for SRS Dosimetry
B. Barraclough*, J. Hansen

 
PO-GePV-T-343 : Evaluation of a New Diode Detector for Beam Data Measurements
S. Stathakis*, C. Kabat, M. Naessig

 
PO-GePV-T-344 : A Comparison of Field Output Corrections Factors for a Diode Detector Among Various Measurement Setups and Among Various Energies for Stereotactic Cones
Y. Lee*, Y. Kim

 
PO-GePV-T-347 : Dosimetrical Verification of Output of Small Cones in a Radiosurgery Device
L. Jin*, S. Hayes, C. Ma

 
PO-GePV-T-349 : Thresholding Gamma Analysis On SRS Anthropomorphic Phantoms
A. Molineu*, L. Acuna Scafati, S. Kry

 
PO-GePV-T-350 : An End-To-End, Low-Cost, Universal Winston-Lutz Type Quality Assurance Procedure for Hypofractionated Image-Guided Stereotactic Radiosurgery
L. Ma*, W. Hu, T. Nano, L. Wang, C. Chuang

 
PO-GePV-T-351 : Evaluation of Delivery Quality Assurance of Cyberknife Stereotactic Radiosurgery
J. Li*, X. Zhang, H. Zhuang, R. Yang

 
PO-GePV-T-352 : Comparison of SRS QA Tools On IROC Head Phantom Plan
C. Teng*, N. Vassell, E. Sudentas, T. Nguyen, Y. Lo

 
PO-GePV-T-353 : Implementing a QA Phantom to Test Discrepancies in Stereotactic Space Definition for Gamma Knife ICON
J. Caron*, S. Ahmad, Y. Chen

 
PO-GePV-T-354 : Evaluation of a New Winston Lutz Tool for the Treatment of Multiple Brain Metastases for Mono-Isocentric Beams
A. Perez-Andujar*, Y. Mutaf, G. Klein, J. Chen

 
PO-GePV-T-355 : Simple and Reliable Calibration Fields for OrthoChromic Film Dosimetry Protocol
W. Feng*, C. Shi, J. Zhou, A. Chu, L. Zhou, J. Sakellakis, M. Needham, A. Grann

 
PO-GePV-T-356 : The Effect of Collimator Setting On Small Photon Field Output in a Commercial Treatment Planning System
S. Zhang*, D. Du, C. Han, A. Liu

 
PO-GePV-T-357 : Comparison of Commercial Pre-Treatment QA Devices for Stereotactic Radiotherapy Plans
S. James*, A. Al-Basheer, E. Elder, J. Barrett, F. Mostafaei

 
PO-GePV-T-360 : Clinical Evaluation of a Novel Automatic Inverse Planning System in Gamma Knife Lightning
T. Cui*, K. Nie, J. Zhu, D. Shabbar, J. Weiner, A. Chundury, N. Ohri, Y. Zhang, I. Vergalasova, N. Yue, X. Wang

 
PO-GePV-T-361 : Dose Gradient Improvement for SBRT Lung Plans During Optimization
T. Li*, B. Mowbray, P. Vadnais, A. Mendez, C. Geraghty, B. Hasson

 
PO-GePV-T-362 : Investigation of Treatment Planning Strategies for Multi-Isocenter Intracranial
stereotactic Radiosurgery

I. Rusu*, J. Roeske, S. Gros, A. Solanki, H. Kang

 
PO-GePV-T-363 : Validation and Clinical Implementation of VMAT Liver SBRT On 6MV-FFF O-Ring Halcyon Linac
T. Tackett*, A. Webster, M. Bernard, M. Kudrimoti, D. Pokhrel

 
PO-GePV-T-365 : Evaluation of Model-Based Dose Algorithms Using HU as a Density Surrogate for FFF-SBRT of Island Lung Lesions
B. Bismack*, S. Devpura, I. Chetty

 
PO-GePV-T-366 : Evaluation of Parameters Affecting Gamma Passing Rate in Patient-Specific QA’s for Multiple Brain Lesions IMRS Treatments
E. Salari*, D. Shvydka, E. Parsai

 
PO-GePV-T-368 : To Determine the Impact of Rotational Uncertainties On Dosimetric Coverage of Distant Targets Using VMAT Planning and a TPS Tool to Measure Plan Uncertainty
G. Klein*, Y. Mutaf

 
PO-GePV-T-369 : Feasibility of Skull Base Stereotactic Radiotherapy On Elekta MR-Linac
H. Wang*, J. Yang, J. Phan, E. Han, T. Lim, P. Castillo, X. Wang

 
PO-GePV-T-370 : Impact of MLC Uncertainty in Single Isocenter Multiple-Lesions SRS VMAT Plans
J. Xu*, E. Chacko, B. Zhang, M. MacFarlane, K. Jiang, M. Mishra, M. Guerrero, S. Chen

 
PO-GePV-T-371 : Use Monte-Carlo Simulation to Determine the Coverage-Based PTV Margin
L. Huang*, J. Chang

 
PO-GePV-T-373 : Dosimetric Impact of Anatomical Changes Between Photon and Proton Stereotactic Body Radiation Therapy for Lung Cancer
C. Liu*, T. Ma, T. Gray, S. Ahmed, N. Yu, K. Stephans, G. Videtic, P. Xia

 
PO-GePV-T-374 : The Dosimetric Effect of Using a Titanium Material Assignment Versus Limited Hounsfield Units for SBRT Spine Patients with Hardware
Z. Richards*, D. Christ, D. DiCostanzo, K. Dibs, D. Blakaj

 
PO-GePV-T-375 : Quantitative Assessment of Inter-Fractional Anatomy Change On Dose Delivery of Prostate SBRT
C. Cheng*, X. Zhang, B. Liu, N. Yue, R. Parikh, Y. Zhang, X. Wang

 
PO-GePV-T-376 : Analysis of Plan Quality for Intensity-Modulated Proton Therapy Vs. Photon Stereotactic Radiosurgery for Brain Metastases
T. Gray, C. Liu, P. Xia,

 
PO-GePV-T-377 : Robustness of AI Treatment Planning to Account for Inter-Fractional Changes in Targets and OARs
T. Gray*, W. Wang, C. Liu, Q. Wu, D. LaHurd, E. Balagamwala, A. Vassil, P. Xia

 
PO-GePV-T-379 : Dosimetric Comparison of ZAP-X and CyberKnife Stereotactic Radiosurgery for Single Brain Metastasis
J. Wang, L. Pan, B. Qu, M. Bodduluri, X. Dai, J. Zhongjian, C. Wang, J. Bai, S. Xu*

 
PO-GePV-T-380 : Direct Dosimetric Comparison of LINAC Vs GK FSRT for Large Brain Tumors
Z. Whiting*, E. Calugaru, D. Ma, B. Garcia, M. Keohane, A. Goenka, J. Chang

 
PO-GePV-T-381 : Dosimetric Evaluation of Lung Stereotactic Body Radiation Therapy (SBRT) Treatment Plans
T. Giaddui*, B. Wang, A. Hollander, B. Micaily, C. Miyamoto, S. Li

 
PO-GePV-T-382 : Thoracic Spine SBRT: Is Free Breathing CT Sufficient for VMAT Planning?
K. Xu*, Y. Zhang, J. Zhou, N. Yue, C. Ma

 
PO-GePV-T-383 : Variance in DVHs Based On Machine Repeatability
C. Kabat*, H. Parenica, N. Papanikolaou, S. Stathakis

 
PO-GePV-T-384 : Comparison of Monte Carlo and Pencil Beam Algorithms in Brain Dose Calculations for Stereotactic Radiosurgery of Multiple Brain Metastases
H. Jiang*, R. Badkul, N. Demez, D. Johnson, D. Soultan, D. Craft

 
PO-GePV-T-385 : Algorithm for Forward SBRT Planning with Constant Dose Rate Flattening Filter Free Dynamic Conformal Arcs
J. Barbiere*, G. Beninati, R. Teboh Forbang, A. Ndlovu

 
PO-GePV-T-386 : The Influence of Iso-Center Location, Beam Type and Lesion Size On Plan Specific QA in Lung SBRT
S. Mashouf*, A. Bauer, S. Tripathi

 
PO-GePV-T-389 : Dosimetric Impact of Peripheral MLC Leaves for Stereotactic Radiosurgery
X. Zhao*, E. Covington, A. Alexandrian, R. Popple

 
PO-GePV-T-390 : Organ-At-Risk Motion Analysis for Pancreatic Tumor Stereotactic Radiotherapy
T. Gray*, C. Liu, B. Guo, D. LaHurd, E. Balagamwala, A. Vassil, P. Xia

 
PO-GePV-T-391 : Intra-Fraction Motion
of Brain SRS/SRT with Multiple Targets:
an
Evaluation Based On a Robotic Radiosurgery System

X. Chen*, L. Jin, L. Chen, J. Liu, L. Wang, S. Hayes, S. Weiss, R. Price, C. Ma

 
PO-GePV-T-392 : Brain Stereotactic Radiosurgery Using MR-Guided Online Adaptive Planning to Daily Setup Variation: An End-To-End Test
E. Han*, H. Wang, T. Briere, D. Yeboa, T. Boursianis, G. Kalaitzakis, E. Pappas, P. Castillo, J. Yang

 
PO-GePV-T-393 : Optimizing Isocenter Placement Based On Rotational Uncertainty in Single-Isocenter SRS
C. Baley*, N. Kirby, S. Stathakis, N. Papanikolaou, P. Myers, K. Rasmussen, D. Saenz

 
PO-GePV-T-394 : Dosimetric Study of the Electron Return Effect On Breast Treatment Planning On a 1.5 T MR-LINAC
J. Park*, T. Chiu, Y. Park, X. Gu, A. Godley, Y. Zhang

 
PO-GePV-T-397 : New Dosimetric Guidelines for Acuros Through Comparative Evaluation of SBRT Lung Treatment Plans Against AAA
M. Pacella*, M. Webster, S. Tanny, N. Joyce, L. Constine, M. Milano, I. Yeo

 
PO-GePV-T-398 : Evaluation of Dosimetric Uncertainties in Small Fields of the Varian EDGE Radiosurgery System Using Monte Carlo Simulations
T. Neupane*, C. Shang, W. Muhammad, T. Leventouri

 
PO-GePV-T-399 : Automatic Spine SBRT Treatment Planning Using Pinnacle Scripting
P. Qi*, S. Chao, E. Murphy, E. Balagamwala, J. Suh, P. Xia

 
PO-GePV-T-402 : Clinical Implementation of PDT Dose and Reactive Oxygen Species Explicit Dosimetry (ROSED) for Pleural Photodynamic Therapy (pPDT)
Y. Ong*, A. Dimofte, K. Cengel, T. Zhu

 
PO-GePV-T-403 : Impact of Dose Calculation Algorithm On Airway Dosimetry: Comparison of AAA and Acuros
P. Kinkopf*, A. Modiri, K. Yu, Y. Yan, P. Mohindra, R. Timmerman, A. Sawant, E. Vicente

 
PO-GePV-T-404 : Dosimetric Comparison of Gamma Knife® Icon and Linear Accelerator-Based FSRT Plans for the Re-Irradiation of Recurrent Glioblastomas
A. Kyler*, H. Liu, A. Ali, W. Shi, Y. Yu, K. Mooney

 
PO-GePV-T-405 : Comparison of Ray Tracing and Monte Carlo Algorithms for Spine Lesions Treated with CyberKnife
J. Li*, X. Zhang, Y. Pan, H. Zhuang, R. Yang

 
PO-GePV-T-406 : Treatment Planning of Intra-Cranial Lesions with Zap Surgical & Comparison with CyberKnife
M. Zaman*, T. Loysel, L. Goganovic, J. Ducote

 
PO-GePV-T-407 : Dosimetric Case Study of Lung SBRT with Two Adjacent Targets: One ISO Vs Two ISOs
J. Zhang*, B. Lee, W. Inouye, R. Kwon, W. Lien

 
PO-GePV-T-408 : Can a Single Beam Model Be Used for SBRT Planning On Multiple Linear Accelerators?
S. Wang*, J. Cunningham, S. Devpura, K. Snyder, C. Smith, B. Miller, S. Gardner

 
PO-GePV-T-409 : A Trajectory Sampling Metric for the Optimization of Dose Distributions in Radiosurgery
R. MacDonald*, J. Lincoln, C. Church, A. Syme, C. Thomas

 
PO-GePV-T-410 : Predictive Model of Lung Tumor Intrafraction Motion Variability
L. Knybel*, J. Cvek, M. Penhaker

 
PO-GePV-T-412 : How Low Can We Go? Modified HyperArc VMAT Geometry for Recurrent Head and Neck SRT
D. Pokhrel*, M. Kudrimoti, M. Bernard

 
PO-GePV-T-413 : Single Fraction SRS Planning Strategies for Dual Metastases Have Different Doses
M. Alfishawy*, M. Abdallah, A. Yassin, K. El-Shahat, I. Hajjaj, A. Mahmoud, R. Hamed, B. Dawood, A. Elsaeed, N. Gebriel, H. Attallah

 
PO-GePV-T-414 : Treatment of Brain Metastases with ZAP-X and CyberKnife: A Dosimetric Comparison
Y. Niu*, A. Rashid, M. Carrasquilla, B. Collins, D. Pang

 
PO-GePV-T-415 : Dosimetric Evaluation of the Galaxy Rotating Gamma System for SRS/SRT
H. Liu*, A. Eldib, L. Chen, B. Wang, S. Li, C. Miyamoto, C. Ma

 
PO-GePV-T-416 : Northwestern Memorial Hospital’s Experiences in Gamma Knife ICON Unit in First 15 Months
P. Lee*, G. Khelashvili, M. Gopalakrishnan, S. Sachdev, J. Kalapurakal, T. Kruser

 
PO-GePV-T-417 : Appropriate Modality for Salvage Radiation Therapy for Local Failure After Primary Lung SBRT
T. Arsenault*, K. Lyons, A. Gross, T. Biswas, M. Yao, N. Azar, C. Towe, T. Podder

 
PO-GePV-T-418 : An Innovative Modification of a Commercial Mask Used in Gamma Knife Icon Stereotactic Radiosurgery
R. He*, W. Duggar, E. Mundra, S. Vijayakumar, C. Yang

 
PO-GePV-T-419 : Measuring Cone Factors for Stereotactic Radiosurgery Applicators On a Varian Edge
S. Tanny*, J. Yoon, M. Ostyn, A. Gray

 
PO-GePV-T-420 : Dosimetric Comparison of Coplanar and Noncoplanar Beam Arrangements for Radiotherapy of Patients with Lung Cancer: A Meta-Analysis
M. Ma*, J. Dai

 
PO-GePV-T-421 : End to End Verification of BrainLAB’s Element Planning System for Intracranial SRS Treatments of Arteriovenous
Malformations On Varian TrueBeam

N. Shrestha*, G. Narayanasamy, M. Radvany, F. Kalantari, S. Morrill, H. Su, F. Xia

 
PO-GePV-T-422 : Characterization of Single-Dose Radiotherapy (SDRT) Performance in a New High-Speed Ring Gantry-Based LINAC System
O. Oderinde*, S. Khan, A. Da Silva, S. Tian, X. Yang, K. Higgins, S. Shirvani, G. Kuduvalli

 
PO-GePV-T-423 : Feasibility Study of Precision-CyberKnife, IPlan-Novalis, Raystation-VersaHD and Monaco-VersaHD to Satisfy the UNC Treatment Planning Protocol of Stereotactic Radiosurgery for Multiple Brain Lesions
P. Mavroidis*, R. McGurk, E. Schreiber, M. Dance, K. Zourari, G. Kalaitzakis, E. Zoros, T. Boursianis, E. Pappas, B. Read, P. Barry, N. Papanikolaou, S. Das, S. Stathakis

 
PO-GePV-T-424 : Effect of Dose Rate On Cardiac Synchronized Volumetric Modulated Arc Therapy
J. Poon*, K. Kohli, D. Schellenberg, M. Deyell, S. Thomas

 
PO-GePV-T-426 : Dosimetric Evaluation of Different Rotating Gamma Ray System Designs
A. Eldib*, H. Liu, Q. Jiang, B. Wang, S. Li, C. Miyamoto, C. Ma

 
PO-GePV-T-430 : Investigation On the Use of Comet Assay for the Measurement of High Dose Radiation
J. Lourdhurajan*, S. Rabi, T. Peace, R. SINGH

 
PO-GePV-T-433 : The Plant Hemoglobin Can Be Developed as a Radio-Enhancer in Solid Tumor Radiation Treatment
S. Yasmin-Karim*, J. Wood, M. Moreau, W. Ngwa

 
PO-GePV-T-434 : Investigate Depth-Dependent Dose Enhancement of PSMA-Targeted Gold Nanoparticles Assisted Radiosensitization at Megavoltage Energy
D. Hara*, J. Shi, R. Schmidt, W. Tao, W. Ma, N. Dogan, J. Ford, A. Pollack

 
PO-GePV-T-435 : A Treatment Planning System for Small Animal Radiation with the Gamma Knife
J. Yuan*, A. Yuan, A. Kerstetter-fogle, C. Flask, S. Choi, A. Sloan, S. Brady-kalnay, R. Muzic, Y. Zheng

 
PO-GePV-T-436 : Analysis of Preclinical IMRT Plan Quality Versus Number of Beam Angles
D. Olivera Velarde*, E. Pearson, B. Aydogan, H. Halpern, G. Redler, B. Epel, J. Slagowski

 
PO-GePV-T-437 : Precise Pulse Delivery Control Using Monitor Units in Electron FLASH-RT
J. Xu*, Y. Poirier, A. Sawant

 
PO-GePV-T-438 : Dosimetry and Quality Assurance for the Small Animal Radiation Research Platform (SARRP)
R. Mueller*, S. Aldelaijan, M. Moreau, W. Ngwa, G. Makrigiorgos, R. Berbeco

 
PO-GePV-T-439 : Evaluation of A New Method to Measure Colony Growth In-Vitro
R. Holden*, J. Park, A. Lynnette Price, D. Dunn, S. Floyd, M. Oldham

 
PO-GePV-T-440 : Radiation Cell Survival Fraction After a FLASH Radiation Pulse
S. Zhou*, Y. Yan, D. Zheng, S. Wang, S. Wisnoskie, D. Umstadter

 
PO-GePV-T-441 : A Study of Indirect Apoptotic Death by Vascular Damage On Cell Survival After Single-Fraction Radiotherapy by Using An Improved Cellular Automata Model
D. Kawahara*, L. WU, Y. Nagata, Y. Watanabe

 
PO-GePV-T-442 : EQD2 of HDR Brachytherapy for Vaginal Cancer Based On a Novel Model
B. Wang*, S. Li, B. Micaily, A. Hollander, T. Giaddui, C. Miyamoto

 
PO-GePV-T-443 : Effect of Total and Hypoxic Tumor Volumes on the TCP in Hypofractionated Radiotherapy
A. Chvetsov*, R. Stewart, L. Hanin, J. Zeng, R. Rengan, S. Lo

 
PO-GePV-T-444 : A Biology-Driven Deep-Learning Based Cell Survival Model for Proton Radiation
Y. Lai*, C. Shen, Y. Chi, F. Guan, X. Jia

 
PO-GePV-T-445 : Relative Response of Murine Lung Tumors From Conventional Radiotherapy (CRT) Versus Pulsed Low-Dose-Rate (PLDR) Radiotherapy
T. Dos Santos*, D. Cvetkovic, L. Chen, C. Ma

 
PO-GePV-T-447 : DNA-Scale Dose Deposition Surrounding Heavy-Metal Nanoparticles Irradiated with a Monoenergetic Kilovoltage-Energy Beam
N. Myziuk*, E. Porter, M. Snyder

 
PO-GePV-T-448 : Alpha Particle Microdosimetry Calculations Aided by Shallow Neural Network Regression Fitting
P. Wagstaff*, P. Mínguez Gabiña, J. Roeske

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