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Therapy General ePoster ViewingSunday - 7/10/2022ePoster Forums
Therapy General ePoster Viewing (ePosters available for viewing during exhibit hall hours: SU|12:30-5:00, MO/TU|9:00-5:00, WE|9:00-2:00) 

PO-GePV-T-1 : An Evaluation of Five Commercially Available Models for Autosegmentation of Organs at Risk in Genitourinary Malignancies
S. Yaddanapudi*, A. Anand, J. Brooks, M. Fatyga, R. Foote, D. Hobbis, A. Jackson, J. Lucido, J. Ma, D. Moseley, D. Pafundi, S. Patel, Y. Rong, D. Routman, B. Stish, E. Tryggestad

PO-GePV-T-2 : A Comprehensive Database On Electron Backscattering From Solids for Energy Ranges 0.1 KeV – 15 MeV
F. Akbari*, D. Shvydka, E. Parsai

PO-GePV-T-3 : Clinical Analysis of a Dual-Energy CT Joint Statistical Image Reconstruction Method in Proton Therapy
X. Chen*, M. Medrano, T. Ge, R. Liao, D. Politte, B. Whiting, Y. Hao, J. Williamson, J. O'Sullivan, T. Zhao

PO-GePV-T-4 : Simulation of 4DCT Phase-Based Measurement Errors in Tumor Size and Motion
L. Naumann*, R. Savjani, M. Lauria, B. Stiehl, P. Boyle, A. Santhanam, D. Low

PO-GePV-T-5 : Evaluation of Initial and Online Adapted Plan Quality in Ethos for Head and Neck Patients
N. Nasser*, G. Yang, J. Caudell, E. Moros, V. Feygelman, G. Redler

PO-GePV-T-6 : Dosimetric Evaluation of Ethos IMRT Versus Eclipse VMAT Plans for Cervical Cancer ART
D. Branco*, K. Kisling, R. Manger, D. Rash, K. Moore, X. Ray

PO-GePV-T-7 : Difference of Pseudo Fluences - a Novel Concept for VMAT Plan Adaption
K. Kirschbaum, P. Kessler*, E. Jung, B. Hahn-rigaud, K. Bratengeier

PO-GePV-T-8 : Assessment of Inter-Fractional Adaptive Planning Techniques of Spine SBRT Treatments Treated Using the Elekta Unity MRLinac and Monaco Treatment Planning System
B. Smith*, M. Howard, J. Snyder, D. Dunkerley, D. Hyer, J. St-Aubin

PO-GePV-T-9 : Evaluating Accuracy of Biology-Guided Radiotherapy Using QUASAR 4D Motion Phantom
G. Bal*, P. Olcott, D. Zaks, S. Khan, J. Burns, J. Schmall, L. Shao, T. Laurence, O. Oderinde, M. Surucu, M. Narayanan, G. Kuduvalli

PO-GePV-T-10 : Web-Based Fully Automatic 2nd Check for Online Adaptive Radiotherapy: Design and Workflow
J. Lin*, M. Lin, M. Chen, Z. Trivedi, J. Wu, Y. Yan, A. Godley, A. Pompos, S. Jiang, X. Jia, W. Lu, R. Reynolds

PO-GePV-T-11 : Illustration of a DNA-Damage Induction Model for FLASH Proton Irradiation
F. Van den Heuvel*, F. Fiorini

PO-GePV-T-12 : Contrast-Enhanced Liver MR Synthesis Using Multi-Modal Sparse Attention Fusion Network
C. Jiao*, Z. Fan, D. Ling, Z. Zhu, W. Yang

PO-GePV-T-13 : A Preliminary Dosimetry Evaluation Study for the New Treatment Planning System On All-In-One (AIO) of Nasopharyngeal Carcinoma (NPC)
X. Yang*, s. Huang, W. Sun, J. Du, Y. Du, L. Lin, K. Zhang, J. Tang, Y. Sun, X. HUANG

PO-GePV-T-14 : Comparison Between Partition Model and 3D Dosimetry for 90Y-Microspheres Treatment Based On 99Tc-MAA_SPECT Examination
M. Wong*, F. Lee

PO-GePV-T-15 : A Machine Learning Prognostic Model for the Assessment of 177-Lu-DOTATATE Therapy Using Dose and Radiomics Features Analysis
D. Plachouris, V. Eleftheriadis, T. Nanos, P. Papadimitroulas, L. Vergnaud, N. Papathanasiou, D. Sarrut, G. Kagadis*

PO-GePV-T-16 : Quantitative Relationship of CT Hounsfield Units to Iodine Concentration for Radioactive Iodine Treatment
X. Kong*, M. Georgiou, S. Gulec, A. Mcgoron, X. Wu

PO-GePV-T-17 : Administration of 177Lu-PSMA-617 as Compared to 177Lu-Dotatate
P. Patel*, K. McCall

PO-GePV-T-18 : Commission a 3D Printed Applicator System for Skin Brachytherapy Treatment
M. Ashenafi, K. Aujla, D. Zheng*

PO-GePV-T-19 : Automated Physics Chart Checking for Brachytherapy
H. Xu*, M. MacFarlane, M. Guerrero, A. Gopal, S. Chen, B. Zhang

PO-GePV-T-20 : Miniaturized Scintillator Detector for in Vivo Dosimetry in HDR Brachytherapy
M. Gonod, M. Suarez, C. CHACON, J. Crouzilles, S. Laskri, J. Vinchant, T. Grosjean, L. Marage*

PO-GePV-T-21 : In-Vivo Detection of Strut Deformation in Partial Breast Irradiation
M. Walls*, C. Ramsey, I. Pfeiffer

PO-GePV-T-22 : An Autoradiograph-Free Method for the Commissioning and QA of Elekta Interstitial MR/CT HDR Tandem and Ring Applicators
J. Wu*, A. Schwarz, S. Sun, L. Maloney, G. Yan, B. Lu

PO-GePV-T-23 : A Novel Quality Assurance System to Evaluate MR-Only Workflow for Interstitial and Intracavitary Gynecological HDR Brachytherapy
S. Aldelaijan*, H. Alsaleh, C. Constantinescu, S. Devic, I. Buzurovic, B. Moftah

PO-GePV-T-24 : Utilization of Phosphorescent Materials During Quality Assurance of HDR Afterloaders
D. Sterling*, E. Ehler, X. Tang, D. Mathew

PO-GePV-T-25 : Distribution of Interfractional Dosimetric Variation of HRCTV in Cervix HDR Brachytherapy
B. Washington*, M. Randall, D. Fabian, D. Cheek, C. Wang, W. Luo

PO-GePV-T-26 : Development of An Original Multi-Modality Gynecologic Brachytherapy Phantom
B. Eckroate*, J. Raffi, R. Venkataraman, Y. Kim, D. Ayala-peacock, O. Craciunescu

PO-GePV-T-27 : Impact of SAVI Catheter Digitization Variability On Dosimetric Parameters of HDR Brachytherapy Breast Treatment Plans
V. Chaswal*, M. Morcos, T. Romaguera, U. Abraham, S. George, J. McCulloch, A. Llanes Lopez, J. Contreras, M. Rodrigues, A. Gutierrez, R. Tolakanahalli

PO-GePV-T-28 : Clinical Evaluation of Dosimetric Impact of Applicator Displacements On 3D Gynecological High Dose-Rate Brachytherapy Treatments
S. Jayarathna*, A. Hoover, J. Clarke, R. Badkul

PO-GePV-T-29 : Use Monte Carlo Simulations to Investigate the Energy Dependence of EBT-3 Film Dosimetry for a Y-90 Disc Source for Episcleral Brachytherapy
X. Chang*, L. Huang, Y. Cao, J. Liu, J. Chang

PO-GePV-T-30 : Commissioning of Varian Horizontal HDR Leipzig- Style Surface Applicator
A. Amoush, N. Vassell, N. Kalach*,

PO-GePV-T-31 : Optimisation of Point A Based Cervix Cancer HDR Brachytherapy
S. Acharya*

PO-GePV-T-32 : Source Position Uncertainty in the Venezia Advanced Gynecological Applicator for High-Dose-Rate Brachytherapy
X. Li*, Y. Huang, K. Hopfensperger, S. Bhagroo, H. Zhao, J. Kunz, G. Nelson, F. Su

PO-GePV-T-33 : Impact of Adding Free Needles and Optimization to Tandem and Ovoids in High Dose Rate Brachytherapy Treatment for Cervical Cancer
H. Liu*, J. Sohn, Y. Zhang, E. Fields, D. Todor

PO-GePV-T-34 : Evaluation of the Dosimetric Quality of MRI-Only HDR Brachytherapy Planning with Titanium Ring-And-Tandem Applicators
I. Veltchev*, T. Lin, X. Chen, R. Price, K. Howell, C. Ma

PO-GePV-T-35 : A Statistical Analysis of Correlations Between HRCTV Dose and OAR Doses for Cervix HDR
B. Washington*, M. Randall, D. Fabian, D. Cheek, C. Wang, W. Luo

PO-GePV-T-36 : Deep-Learning-Based Automated HDR Applicator Digitization for GYN Brachytherapy
S. Momin*, Y. Lei, T. Wang, M. Axente, J. Roper, J. Shelton, J. Bradley, T. Liu, X. Yang

PO-GePV-T-37 : Are We Improving? The Learning Curve for Implementing Intraoperative Ultrasound-Guided Prostate High Dose Rate (HDR) Brachytherapy
A. Besemer*, J. Wong, S. Wang, M. Hyun, S. Wisnoskie, D. Schott, D. Zheng, Y. Lei, K. Gallagher, S. Hendley

PO-GePV-T-38 : Probability of Radiation Induced Maculopathy and Optic Neuropathy Following I-125 Eye Plaque Brachytherapy
M. Studenski*, V. Peters, A. Gurayah, W. Jin, D. Kwon, W. Zhao, Z. Correa, J. Harbour, S. Samuels

PO-GePV-T-39 : Dose Reduction and Tumor Coverage in Small Uveal Melanoma Tumors Treated with Eye Plaque Brachytherapy When Normalizing to An Alternative Prescription Point
S. Tan*, E. Schnell, D. Zuro, S. Ahmad, S. Martinez

PO-GePV-T-40 : Novel Film Calibration Method Directly Using Low Energy Brachytherapy Sources with a Custom Phantom
C. Oare, A. Alshreef*, C. Ferreira

PO-GePV-T-42 : Dosimetric Impact of Source Displacement in GammaTile Surgically Targeted Radiation Therapy for Gliomas
S. Ng, Y. Yue, K. Shiue, Y. Le*,

PO-GePV-T-43 : End-To-End Test for GammaTile Permanent Brain Implants
A. Alshreef*, B. Rogers, P. Alaei, P. Bolan, C. Ferreira

PO-GePV-T-44 : The Challenge of Base Depth Needle Placement in Prostate Brachytherapy: Video Documentation, Phantom Simulation, Manual and Mechanical Solutions
P. Mclaughlin*, C. Evans, G. Hixon, V. Narayana

PO-GePV-T-45 : Dosimetric Evaluation of Surgically Targeted Radiation Therapy (STaRT) Brain Implants with GammaTile
R. Badkul*, H. Li, F. Wang

PO-GePV-T-46 : Interstitial Brachytherapy Basal Dose Calculations Utilizing Paris System
K. Afrin, S. Ahmad*

PO-GePV-T-47 : Evaluate Atlas-Based Auto-Segmentation in MR Images for Liver Yttrium-90 Selective Internal Radiation Therapy
J. Li*, R. Anne

PO-GePV-T-48 : Parameterization of Backscatter Contributions in HDR Brachytherapy with Surface Applicators
X. Shen*, M. Bhagwat

PO-GePV-T-49 : Radiobiological Comparison of Prostate LDR Brachytherapy with and Without Simultaneously Integrated Boost to the Dominant Intra-Prostatic Lesion Defined by 68Ga-PSMA PET / MpMRI
R. Holden*, J. Lian, S. To, T. Royce, P. Mavroidis

PO-GePV-T-50 : Determination of Material Contours for ACE: Advanced Collapsed Cone Engine Heterogeneity-Corrected Brachytherapy Dose Calculations Using Gafchromic EBT3 Film
D. McIlrath, S. Ahmad, E. Schnell*

PO-GePV-T-51 : Effects of Multichannel Cylinder System (MCC) Rotation On Plan Robustness in Asymmetric Vaginal Tumors
L. Huang*, E. Suarez, Z. Wang, M. Naik, J. Greskovich, T. Djemil

PO-GePV-T-52 : On The Impact of High-Density Plastics On The Dose Calculations for Vaginal Cylinder Brachytherapy: A Benchmark Study
M. Meftahi*, W. Song

PO-GePV-T-53 : A Benchmark Study On BrachyVision ACUROS TPS in Modeling a Direction Modulated Brachytherapy Tandem Applicator
M. Meftahi*, W. Song

PO-GePV-T-54 : Method to Assess the Need for Re-Planning HDR Tandem/ring Treatments Subsequent to the Initial Fraction
T. Gray*, S. Cherian, A. Sudha, B. Guo, P. Xia, D. Wilkinson

PO-GePV-T-55 : Integrated Optimization of Needle Path and Dwell Time for Individual Template Guided Interstitial Brachytherapy
y. wang*, B. Liu, H. Sun, F. Zhou

PO-GePV-T-56 : Graphical User Interface (GUI) Developmentfor Deep Learning Assisted Algorithm for Catheter Reconstruction During MR-OnlyGynecological Interstitial Brachytherapy
K. Guo*, A. Shaaer, M. Paudel

PO-GePV-T-57 : Simulating Seed Carrier Resorption to Generate Carrier-Specific TG-43 Tables for Post-Permanent Implant Dosimetry
M. Trager*, D. Aramburu Núñez, A. Damato, G. Cohen

PO-GePV-T-58 : Better Identification of Dose Constraints for Use in HDR in the Treatment of Locally Advanced Cervix Cancer
S. Choudrie*, R. Crilly, J. Kahn

PO-GePV-T-59 : Ring to Tandem Total Reference Air Kerma (TRAK) Ratio: A Novel Quality Metric to Spare Ureters in HDR Brachytherapy for Cervical Cancer?
E. DORAISAMY*, T. Baig, S. Koerner, C. Houser, H. Kim

PO-GePV-T-60 : Monte Carlo Simulation of the 224Ra Decay Chain and the Diffusion of 220Rn for Diffusing Alpha-Emitters Radiotherapy
V. Diaz Martinez*, S. Abbasinejad Enger, L. Carroll

PO-GePV-T-61 : Retrospective Evaluation of Per-Fraction Vs. Per-Implant HDR Brachytherapy Planning of Locally Advanced Cervical Cancer Patients Delivered with a Combined Intracavitary/interstitial Technique
M. Maynard*, G. Owen, J. Peng, A. Rapchak, W. Godwin, D. McDonald, S. Roles, J. Winiecki, S. Cooper, H. Eldredge-hindy

PO-GePV-T-62 : Dosimetric Characteristics of Two Skin Collimation Materials for 6MeV and 9MeV Electron Beams
M. Chan*, X. Liu, J. Park, S. Lim, D. Wang

PO-GePV-T-63 : Clinical Implementation and Comparison of QA for Electron Therapy
T. Peng*, H. hu, Z. Li, Y. Zheng

PO-GePV-T-64 : Dosimetric Evaluation of Plastic Scintillation Detector for Skin Collimation in Electron Beam Radiation Therapy
K. Yang*, S. Sharma, A. Ju

PO-GePV-T-65 : Commissioning of the FLASH Mobetron System
E. Schueler, A. Palmiero*, A. Glick, K. Liu, N. Chopra, D. Neill, S. Massia, S. Beddar

PO-GePV-T-66 : Stability of the FLASH Mobetron System
A. Palmiero*, A. Glick, K. Liu, N. Chopra, D. Neill, S. Massia, E. Schueler, S. Beddar

PO-GePV-T-67 : Investigating Dose Calculation Algorithms in Electron Radiation Therapy with Tissue Equivalent Material
F. Mostafaei, T. Lavin, D. Jacobs, M. Rocque, C. Huh*,

PO-GePV-T-68 : Evaluation of the Influence of Plan Modulation Factor On IMRT/VMAT Dose Calculation Sensitivity
S. Gardner*, S. Wang, K. Snyder, C. Smith, B. Miller, I. Chetty

PO-GePV-T-69 : Validating Small Beam Output Factor of Macro Electron Monte Carlo Dose Calculation
I. Yeo, W. Nie*, Q. Xu

PO-GePV-T-70 : A Study On the Feasibility of a Scattering-Foils Free Electron Beam for TSET
G. Ding*, Z. Chen, K. Homann

PO-GePV-T-71 : Quality Assurance for Mixed Electron-Photon Beam Radiation Therapy Using Treatment Log Files and MapCHECK
Y. Tai*, V. Heng, M. Renaud, M. Serban, J. Seuntjens

PO-GePV-T-72 : A Surface-Conforming Flexible Collimator for Improving Electron Radiotherapy
H. Paschal*, C. Kabat, S. Stathakis, M. Bonnen, N. Papanikolaou, N. Kirby

PO-GePV-T-73 : Commissioning Total Skin Electron Therapy and Monte Carlo Verification of Patient Skin Dose
W. Nie*, I. Yeo, K. Huynh, S. Tong, J. Fan

PO-GePV-T-74 : Evaluation of Radiotherapy Enhanced by Cherenkov Photo-Activation of Psoralen (AMT)
B. Koch*, M. Oldham, S. Floyd

PO-GePV-T-75 : Monte Carlo Investigation of Planar Electron Mimbeams Created by a Single Halbach Cylinder
G. McAuley*, J. Slater

PO-GePV-T-76 : A Fast and Accurate Contour Tracing (FACT) Method for Custom Electron Cutout Using a Beam’s Eye View (BEV) Camera
J. Sohn*, J. Park, S. Kim

PO-GePV-T-77 : Development of An Automated Region of Interest Selection Algorithm for Surface Guided Radiation Therapy of Breast Cancer
S. Cui*, G. Li, H. Kuo, B. Zhao, A. Li, L. Cervino

PO-GePV-T-78 : Evaluation of Patient Motion During Mask Based Treatment On the GammaKnife Icon
E. Ross*, C. Ramsey, J. Bowling, I. Pfeiffer, G. Clark, D. Hauge

PO-GePV-T-79 : Comparison of Setup Uncertainty and Efficiency Between Klarity SBRT System and BlueBAG System for Spine SBRT
E. Quan, S. Krafft, M. Vaccarelli, T. Briere, E. Han*

PO-GePV-T-80 : Evaluation of a Mini 6DoF Plate for End-To-End Test of Surface-Guided Radiation Therapy (SGRT)
J. Sohn*, M. Polizzi, S. Kim

PO-GePV-T-81 : Dosimetric Effects of a Prone Breast Board System
G. Jensen, D. Pearson*, E. Schodowski

PO-GePV-T-82 : Determination of Correction Factor for Holder Used in IAEA/WHO Postal Dosimetry Audit Service Using Monte Carlo Simulations
D. HAN*, A. Dimitriadis, K. Chelminski, P. Kazantsev, G. Azangwe, J. Swamidas

PO-GePV-T-83 : The Use of the IAEA Directory of RAdiotherapy Centres (DIRAC) in Scientific Literature
M. Carrara*, W. Elisabeth

PO-GePV-T-84 : Development of In-Air Film Dosimetry Approach for Quality Assurance of Cs-137 Blood Irradiators
H. Moktan Tamang, S. Cho*

PO-GePV-T-85 : Outcome of Unconventional Pattern of Treatment for Esophageal Cancer Patients
A. Dey, T. Biswas, T. Podder*

PO-GePV-T-86 : Implementation a Hybrid Tele-Oncology Program in Sub-Saharan Africa
N. Ade*, P. Mobit, P. Imandi

PO-GePV-T-87 : An Education Bot for Radiation Safety in Radiotherapy
J. Chow*, L. Sanders, S. Siddique, L. Xu, S. Ali, R. Nathanael, K. Li

PO-GePV-T-88 : Initial Evaluation of Varian Identify System (Version 2.3)
H. Zhao*, C. Haacke, R. Price, M. Szegedi, Y. Huang, P. Rassiah-Szegedi, A. Paxton, F. Su, V. Sarkar, B. Salter

PO-GePV-T-89 : Eclipse Scripting API: An Automated Plan-Check to Improve Efficiency
C. Chang*, Y. Wu, M. Yang

PO-GePV-T-90 : Improving Treatment Plan Workflow with Automated Eclipse Scripting API
Y. Wu*, D. Bhatti, C. Chang

PO-GePV-T-91 : Study On Correction Accuracy of Couch Sag in CT-Linac
L. Yu*, B. Yang, X. Liu, T. Pang, Y. Liang, J. Qiu

PO-GePV-T-92 : Feasibility Study of a Deep Learning-Based Model Trained On Adults for Auto-Segmentation of Head-And-Neck OARs in Pediatric CT Images
Z. Shen*, A. Olch, N. Bai, K. Wong, E. Chang, W. Yang

PO-GePV-T-93 : Our 3D Printing Experience in Fabricating An Anthropomorphic Phantom for Radiotherapy Film Dosimetry
H. Chen*, F. Mourtada

PO-GePV-T-94 : Investigation of KV Imaging Dose in Accelerated Partial Breast Irradiation (APBI)
Y. Song*, X. Zhai, Y. Liang, B. Mueller, D. Guttmann, D. Roth O'brien, L. Braunstein

PO-GePV-T-95 : Tracking a Moving Gold Implant Using Cherenkov Light
K. Okazaki, E. Brost, Y. Watanabe*

PO-GePV-T-96 : Clinical Assessment of Commercially Available Software for Composite Hypofractionated Treatment Plans
C. Esquivel, T. Roberts, A. Tipton, O. Calvo*, L. Patton

PO-GePV-T-97 : An Investigation of Novel Treatment Approaches Using GRID Therapy On the Xstrahl Small Animal Radiation Research Platform
S. Brundage*, P. Sansone, M. Oldham

PO-GePV-T-98 : Simulating Clinical Protocol Accrual in the Radiotherapy Outcomes Estimator (ROE)
A. Iyer*, E. Yorke, J. Shin, A. Apte, A. Rimner, A. Wu, M. Thor, J. Deasy, D. Gomez, A. Jackson

PO-GePV-T-99 : Use of Natural Language Processing for Assisted Review of Clinical Trial Protocols
X. Liu*, M. Hazoglou

PO-GePV-T-100 : Time Is Money: An Investigation On the Use of Copper and Aluminum Electron Plates for TG-142 Monthly Energy Checks
T. Binder, W. Weaver*, Z. Pearson

PO-GePV-T-101 : The Effect of AI Contouring On Head and Neck Patient Treatment Plan Optimization
M. Jones*, P. Mavroidis, T. Wagner, S. Stathakis

PO-GePV-T-102 : Machine-Learning Prediction of the Gel Dosimetry Calibration Curve Equation Based On the Non-Irradiated Gel Magnetic Resonance Imaging
K. Tozzi, J. Lizar, J. Pavoni*

PO-GePV-T-103 : Assessment of the Effect of Time On the Density, Volume, and Shape of Two Custom Bolus Materials
S. Parker*, C. Whiddon, S. Kidd, L. Messenger, A. Towers

PO-GePV-T-104 : Development of a Novel 4D-Quality Assurance Technique to Consider Patient Respiratory Motion for Adaptive Radiation Therapy
T. Meyers*, N. Alsbou, O. Algan, S. Ahmad, I. Ali

PO-GePV-T-105 : Comparison of Heart Sparing Capability of Continuous Positive Airway Pressure and Deep-Inspirational Breath-Hold in Left-Sided Breast Cancer Radiation Therapy
C. Choi*, J. Chang, J. Lee, R. Park, Y. Cho, J. Kim, J. Kim

PO-GePV-T-106 : Development of a Remote Training System for Quality Control of Medical Electronic Linear Accelerators Based On Virtual Reality and Augmented Reality Technology
J. Chen*, X. Weng, F. Fu, L. Jiang, F. Dong, F. Zheng, L. Guo, B. Xu, X. Li

PO-GePV-T-107 : Effect of Different Atomistic DNA Models On Relative Biological Effectiveness of Electron and Proton Based On Geant4-DNA Low-Energy Physical Model
H. Lin*, H. Luo, Y. Zhao, R. Lu, J. Dai, H. Li, J. Jing, X. Guo

PO-GePV-T-108 : A Multi-Centre Multi-Omics Study of Critical Weight Loss Prediction in Nasopharyngeal Carcinoma Patients Undergoing Chemo-Radiotherapy
J. SUN*, S. Lam, X. Teng, J. Zhang, Z. Ma, C. Liu, W. Li, H. Xiao, Y. Huang, X. Han, F. Lee, W. Yip, A. Cheung, H. Lee, K. Au, J. Cai

PO-GePV-T-109 : A Novel Technique to Evaluate Skin Toxicity in Breast Cancer Radiotherapy
R. Culcasi*, M. Vlachaki, M. Snyder

PO-GePV-T-110 : Development and Validation of Treatment-Specific Prediction Models for Critical Weight Loss in Nasopharyngeal Carcinoma Patients – A Multi-Centre Study
J. SUN*, S. Lam, X. Teng, J. Zhang, Z. Ma, Y. Huang, H. Xiao, C. Liu, W. Li, X. Han, F. Lee, W. Yip, A. Cheung, H. Lee, K. Au, J. Cai

PO-GePV-T-111 : Improvements On Acute Gastrointestinal Toxicity Modeling by Using Deep-Learning Auto-Segmentation
R. Salazar*, J. Duryea, A. Leone, S. Nair, R. Mumme, H. Baroudi, T. Netherton, E. Holliday, T. Whitaker, K. Hoffman, L. Court, J. Niedzielski

PO-GePV-T-112 : An Interpretable Machine Learning Model for Predicting Overall Survival for Malignant Mesothelioma Patients Following Radiotherapy
Z. Wang*, V. Li, X. Qi

PO-GePV-T-113 : Evaluation of Radiotherapy Treatment Characteristics for Patients in the Kaiser Permanente Breast Cancer Survivors Study
M. Mille*, L. Veiga, R. Curtis, S. Smith, R. Howell, C. Lee, A. Berrington De Gonzalez

PO-GePV-T-114 : Dosiomics in the Prediction of Local Recurrences of Non-Small Cell Lung Cancers Treated with Stereotactic Body Radiation Therapy
M. diMayorca*, T. Wilhite, M. Tavakoli, K. Nie

PO-GePV-T-115 : NTCP Modeling of Dysphagia 12 Months After Radiotherapy for Oropharyngeal Cancer Using the EAT10, CTCAE and PRO-QoL Scoring Systems
A. Tzikas*, E. Lavdas, D. Kehayas, R. Amdur, W. Mendenhall, N. Sheets, S. Stathakis, R. Green, L. Marks, S. Das, B. Chera, P. Mavroidis

PO-GePV-T-116 : Building Convolutional Neural Networks for Abdominal Aorta-Iliac Calcification Assessment and Cardiovascular Risk Prediction of Prostate Patients Undergoing Stereotactic Radiotherapy
H. Lin*, W. Chen, J. Baal, T. Upadhaya, J. Barrios Ginart, M. Roach, III, J. Hong, O. Morin

PO-GePV-T-117 : Tumor Control Probability for Stereotactic Body Radiotherapy of Early Stage Hepatocellular Carcinoma
F. Liu*, M. Munley

PO-GePV-T-118 : Sparing Salivary Function Following Submandibular Gland Transfer in Head and Neck Cancer Patients: Preliminary Results of a Prospective Trial
V. Moiseenko*, T. Atwood, C. Coffey, L. Blumenfeld, P. Hua, B. Tuma-marcella, P. Sanghvi

PO-GePV-T-119 : Pattern of Treatment and Outcome for Esophageal Adenocarcinoma in the United States: Longitudinal Analysis of a Large Hospital Based Registry
A. Dey, T. Biswas, T. Podder*

PO-GePV-T-120 : A Radiomics-Based Light Gradient Boosting Machine to Predict Radiation-Induced Toxicities in Nasopharynx Cancer Patients Receiving Chemoradiotherapy
Z. Jiang*, Y. Liang, X. Wang, Z. Min, M. Feng, Y. Kuang

PO-GePV-T-121 : Electrostatic Field Simulations and Dynamic Monte Carlo Simulations of a Nanodosimetric Detector
I. Kempf*, T. Staeuble, U. Schneider

PO-GePV-T-122 : Radiobiological Comparison of 3D Conformal Proton Therapy and Intensity Modulated Proton Therapy (IMPT) for Metastatic Brain Cancer
M. Sullivan, H. Jin, S. Ahmad*,

PO-GePV-T-123 : Radiobiological Comparison of Volumetric Modulated Arc Therapy, 3D Conformal Proton Therapy and Intensity Modulated Proton Therapy for Lung Cancer
M. Sullivan, H. Jin, A. Lau*, S. Ahmad

PO-GePV-T-124 : Treatment Planning to Suppress Sublethal-Damage Repair by Modulating Spatio-Temporal Patterns of Spot-Scanning Proton Dose Delivery: An Initial Study
H. Hosoi*, K. Kasamatsu, K. Miyazaki, S. Takao, S. Tanaka, Y. Chen, N. Miyamoto, H. Aoyama, K. Nishioka, T. Hashimoto, T. Matsuura

PO-GePV-T-125 : Computerized Risk Modeling of Imaging Changes and Radionecrosis After Proton Beam Therapy for Childhood Brain Tumors
F. Heinzelmann*, C. Bäumer, S. Peters, A. Stock, S. Schulze-schleithoff, S. Frisch, B. Timmermann

PO-GePV-T-126 : Application of Extracted Proton Energy Spectrum From Measured Integrated Depth Dose to Validating the Linear Energy Transfer Calculation in a Commercial TPS
W. Yao*

PO-GePV-T-127 : An Exploration Toward the Superior Hyperfractionated Schedule in the Intensity Modulated Proton Therapy for Pharyngeal Cancer Under the Variable Relative Biological Effectiveness
K. Kasamatsu*, T. Matsuura, K. Yasuda, K. Miyazaki, S. Takao, H. Aoyama

PO-GePV-T-128 : Dose Enhancement in DNA with Gold Nanoparticle Irradiated by Proton Beams: A Monte Carlo Study
J. Chow*, N. Huynh

PO-GePV-T-129 : Dose Enhancement Effects of High-Z Foils in Proton Radiation Therapy
K. Duke*, S. Ahmad, A. Lau

PO-GePV-T-130 : Small Dataset-Applicable Proton Pencil Beam Algorithm Boost Model: AA-Net
Y. Liu*, X. Shang, G. Zhang, X. Le, W. Zhao, Z. Wang, C. Fang, B. Qu, S. Xu

PO-GePV-T-131 : RBE-Weighted Dose Calculation Based On Dual-Layer Spectral CT in Carbon Ion Therapy with Monte Carlo Simulation Using TOPAS
E. Yoon*, W. Shin, B. Kim, J. Son, C. Choi, J. Kim, S. Jung, J. Park

PO-GePV-T-132 : Dose Calibration and Integral Depth Dose Correction of An Analytical Dose Calculation Algorithm for Collimated Pencil Beam Scanning Proton Therapy
L. Bennett*, K. Erhart, N. Nelson, J. Yu, A. Gutierrez, S. Rana, B. Smith, P. Hill, D. Hyer, T. Geoghegan, K. Patwardhan, W. Culberson, R. Flynn

PO-GePV-T-133 : Stray Neutron Radiation Exposures From Proton Therapy: Physics-Based Analytical Models of Neutron Spectral Fluence, Kerma and Absorbed Dose
S. Shrestha*, W. Newhauser, W. Donahue, A. Perez-Andujar

PO-GePV-T-134 : Implementation of a Track-Repeating Fast Monte Carlo Method for the MD Anderson Proton Therapy Center II
Q. Wang*, F. Poenisch, U. Titt, R. Mohan, P. Yepes

PO-GePV-T-135 : The TOPAS Extension for Secondary Cancer Risk Evaluation After Radiotherapy
G. Tamborino, H. Lee*, A. Bertolet, J. Schuemann, C. Lee, H. Paganetti

PO-GePV-T-136 : Neutron Ambient Dose From Proton Irradiation of ICRU Tissue Calculated Via Monte Carlo Simulation
A. Gearhardt*, Y. Chen, S. Ahmad, M. Newpower

PO-GePV-T-137 : Validation of a Fast Monte Carlo Code for Patient QA with Clinical Mini and Standard Proton Beams
V. Moskvin*, A. Faught, F. Pirlepesov, S. Al-Ward, S. Wilburn, M. Lowe, M. Cohilis, K. Souris, C. Hua

PO-GePV-T-138 : Implementation of An Octree-Based CT Compression for GPU-Based Monte Carlo Dose Calculations
C. Panaino*, H. Wan Chan Tseung

PO-GePV-T-139 : Application of Monte Carlo Simulation for Treatment Planning System Commissioning and Dose Calculation for a Pencil Beam Scanning Proton Therapy System
H. hu*, H. Liu, Y. Jia, Y. Zheng, S. Ding, B. Wang, Y. Li, X. Huang, Z. Li

PO-GePV-T-140 : Beamline-Model Parameters of TOPAS Code for Proton

S. Thompson*, W. Hsi

PO-GePV-T-141 : Evaluation of the Accuracy of Proton Dose Calculations When Using DirectSPR Data
V. Sarkar, A. Paxton*, R. Price, F. Su, G. Nelson, M. Szegedi, S. St. James, B. Salter

PO-GePV-T-142 : Development of A Collision Model for Advanced Proton Treatment Planning and Delivery
S. Chen*, L. Zhao, W. Zheng, A. Qin, R. Deraniyagala, X. Ding

PO-GePV-T-143 : Multi-Isocenter Congruence Tracking with a Custom In-House Software Package
A. Faught*, J. Zhang, L. Wilson, S. Al-Ward, E. Batin

PO-GePV-T-144 : Attachment Reproducibility of the Accessory Tray-Mounted Proton Dynamic Collimation System
T. Geoghegan*, K. Patwardhan, L. Bennett, J. Yu, A. Gutierrez, P. Hill, R. Flynn, D. Hyer

PO-GePV-T-145 : Adaptation of a Commercial Daily QA Device for Daily Proton Depth Verification
J. Kraus, J. Dobelbower, K. McConnell*, J. Harms, R. Cardan

PO-GePV-T-146 : Implementation of the Predictive Models for Autocorrelated Time Series Data Using ARIMA and Artificial Neural Network Algorithms
J. Lah*, D. Shin

PO-GePV-T-147 : Compact Radiation Detector for Wireless Thermoacoustic Range Verification Detects Pulse-To-Pulse Variations During Conventional Proton Therapy

S. Patch*, Y. Hao, T. Zhao, S. Pauly

PO-GePV-T-148 : Positioning Accuracy of Multiple Leaves Collimation in a Compact Pencil Beam Scanning System
H. Azmy, W. Smith, Y. Hao, T. Zhao, T. Zhang, B. Sun*

PO-GePV-T-149 : Statistical Tolerances On Daily Quality Assurance for Proton Spot Width Using a Sphinx Compact Device
S. St. James*, V. Sarkar, R. Price, A. Paxton, F. Su, B. Salter

PO-GePV-T-150 : Summary of Six Months of Daily Data Collected
using the Sphinx Compact On a Mevion Hyperscan System

V. Sarkar, F. Su, A. Paxton*, S. St. James, R. Price, B. Salter

PO-GePV-T-151 : Developing a 3D-Printed Phantom for Daily Proton QA of Two Energies
J. Ryser*, R. Wiersma, S. Avery, X. Liu, A. Kassaee

PO-GePV-T-152 : Dosimetric Impact of Esophageal and Biliary Stents in Intensity Modulated Proton Therapy
P. Sabouri, G. Kim, S. Chen, P. Darwin, S. Mossahebi*

PO-GePV-T-153 : Comparative Clinical Pencil Beam Scanned Proton Flash Therapy: Transmission Beams Vs. Range Stopping Beams
J. Farr*, A. Kolano, T. Gray, C. Liu, P. Xia

PO-GePV-T-154 : The Effect of Non-Ionizing Excitations On the Diffusion of Ion Species and Inter-Track Correlations in FLASH Ultra-High Dose Rate Radiotherapy
R. Abolfath, A. Baikalov*, S. Bartzsch, N. Afshordi, R. Mohan

PO-GePV-T-155 : Feasibility of Dose Rate Calculation with Machine Log File and Monte-Carlo Simulation in FLASH Radiation Therapy
C. Jeon*, S. Ahn, Y. Han

PO-GePV-T-156 : Ultra-High Dose Rate Radiation Production and Delivery Systems Intended for FLASH
J. Farr*, V. Grilj, M. Victor, S. Srinivasan, J. Schippers

PO-GePV-T-157 : Designing Customized In-Vitro Experimental Setups for Proton FLASH Preclinical Studies
U. Titt*, L. Wang, M. Yang, X. Wang, K. Iga, N. Sahoo, X. Zhu, A. Koong, S. Lin, S. Frank, R. Mohan

PO-GePV-T-158 : Feasibility of Customized Hole Filters for FLASH Irradiation
X. Zhao*, F. Reynoso, A. Darafsheh, T. Zhao

PO-GePV-T-159 : Towards Conformal FLASH PBS Proton Therapy: Beam Model Verification and Plan Characteristics
Y. Zhang*, Z. Xiao, J. Speth, E. Lee, A. Mascia

PO-GePV-T-160 : Investigation of the Workload Limitation for Proton Beam FLASH Delivery Based On Survey Results
G. Yu*, Y. Yang, H. Lin

PO-GePV-T-161 : Optimization of a Pelletron Accelerator for Radiobiologic Experiments Using Proton FLASH Radiation
Z. Kaffey*, S. Rooks, M. Mccurdy, J. Eley

PO-GePV-T-162 : Proton Pencil Beam Scanning Proton Vs Photon Stereotactic Body Radiotherapy for Ventricular Tachycardia: A Comparative Planning Study
M. Ruth*, B. Hartl, J. Marcel, J. Arkles, K. Cengel, E. Diffenderfer, M. Kim

PO-GePV-T-163 : Comparative Proton Therapy Treatment Quality Between the Upright and Supine Position for Three Pelvic Indications
W. Kozlowska*, A. Zemanova, W. Larsen, O. Sevela, P. Segars, J. Farr

PO-GePV-T-164 : Assessment of Fetal Dose During Breast Radiotherapy Using a 3DCRT, IMRT, and Proton PBS Approach
S. Domal*, F. Giap, P. Johnson, M. Artz, K. Kirby, C. Williams, W. Bolch

PO-GePV-T-165 : Oblique Beam Angles Lead to Better Rectal Protection But Worse Bladder Sparing in Prostate Cancer Receiving Pencil-Beam-Scanning Proton Therapy (PBS)
Y. Yang, J. Rwigema, C. Vargas, N. Yu, S. Keole, W. Wong, S. Schild, M. Bues*, W. Liu, J. Shen

PO-GePV-T-166 : Feasibility of Intensity Modulated Proton Therapy for Treating Pancreatic Cancer Using a Hypofractionated Approach
F. Alsanea, T. Williamson, F. Poenisch, R. Martin, S. Beddar, G. Sawakuchi, L. Perles, E. Ludmir, A. Koong, P. Das, C. Taniguchi, E. Koay, J. Niedzielski*,

PO-GePV-T-167 : Evaluation of a Novel Monte Carlo Based Plan Validation Software for Proton Therapy
J. Spano, A. Kassaee*, D. Bollinger

PO-GePV-T-168 : Validation of a CBCT-Based Online Evaluation Workflow for Proton Therapy
C. Chang, R. Nilsson, S. Andersson, D. Bohannon, L. Lin, S. Patel, P. Patel, K. Langen, J. Bradley, T. Liu, X. Yang, J. Zhou*

PO-GePV-T-169 : Dosimetric Characteristics and Its Impact On Plan Quality of the Adaptive Aperture of the HyperScan System
A. Silvus*, T. Zhao, T. Zhang

PO-GePV-T-170 : In Silico Study of Proton Adaptive Prostate SBRT Radiation Therapy
B. Maraghechi, Y. Hao*, A. Price, T. Zhao, T. Zhang, B. Sun, A. Darafsheh, E. Laugeman, N. Knutson, G. Hugo, L. Henke, B. Baumann, S. Perkins, T. Mazur

PO-GePV-T-171 : Assessing Plan Robustness for IMPT Using a Machine Learning Model
M. Newpower*, Y. Chen, S. Ahmad

PO-GePV-T-172 : Treatment Planning of Total Marrow Irradiation with Intensity-Modulated Spot-Scanning Proton Therapy
D. Zuro*, G. Vidal, C. Henson, Y. Chen, C. Han, S. Hui, S. Ahmad, I. Ali

PO-GePV-T-173 : Effect of Different Spot Spacings On the Dose Homogeneity and Penumbra in Proton Therapy
F. Pirlepesov*, V. Moskvin, A. Faught

PO-GePV-T-174 : Evaluation of the Utility of Rescans in the Treatment of Prostate and Pelvic Nodes with Pencil Beam Scanning Protons
S. Laub*, S. Schmidt, L. Campbell, B. Hartsell

PO-GePV-T-175 : Patient-Specific Duodenal Hydrogel Spacer as a Dosimetric Buffer for Proton Therapy for Locally Advanced Pancreatic Cancer
D. Han*, H. Hooshangnejad , J. Jatczak, W. Yao, J. Xu, K. Ding

PO-GePV-T-176 : A Workflow to Accurately Delineate Implanted
hardware in Proton Planning

F. Su*, A. Paxton, S. St. James, X. Li, R. Price, B. Salter, V. Sarkar

PO-GePV-T-178 : Investigating Dose-Average Linear Energy Transfer (LETd) in Prostate Cancer Patients with Unilateral and Bilateral Metallic Hips
S. Rana*, S. Pokharel, M. Kasper, W. Hsi

PO-GePV-T-179 : Proton Lattice Planning Strategy Using Primary and Robust Complimentary Beams
S. Mossahebi*, J. Jatczak, B. Zhang, J. Molitoris, P. Mohindra, W. Regine, B. Yi

PO-GePV-T-180 : Can Proton Linear Accelerator Beams and Minibeams Achieve Superior Plan Quality Over Cyclotron-Generated Proton Beams and Photons in the Treatment of Lung Tumors?
T. Gray, C. Liu*, A. Kolano, J. Donaghue, J. Farr, K. Stephans, G. Videtic, J. Suh, P. Xia

PO-GePV-T-181 : Can Proton Linear Accelerator Beams and Minibeams Achieve Superior Plan Quality Over Cyclotron-Generated Proton Beams and Photons in the Treatment of Head and Neck Tumors?
T. Gray*, S. Ahmed, C. Liu, A. Kolano, J. Donaghue, J. Farr, J. Suh, P. Xia

PO-GePV-T-182 : Efficient Pencil Beam Scanning Proton Treatment for Cranial-Spinal Irradiation
M. Zhu*, A. Stanforth, W. LePain, M. Pasha, K. Langen

PO-GePV-T-183 : Proton PBS Treatment for Prostate in Seated Position
S. Koren*, D. Benjamin, Y. Braude, A. Guemnie Tafo, J. Kindler, M. Marash

PO-GePV-T-184 : Autocalibration of Linear Positioners in a Dynamic Collimation System for Pencil Beam Scanning Proton Therapy
K. Patwardhan*, T. Geoghegan, R. Flynn, D. Hyer

PO-GePV-T-185 : Evaluation and Short-Term Outcomes of Proton SBRT Using Pencil Beam Scanning for Solitary NSCLC
C. Shang*, G. Evans, M. Rahman, T. Williams

PO-GePV-T-186 : How Much Momentum Acceptance Is Required to Track Breathing Variability in NSCLC Patients?
A. Giovannelli*, A. Koethe, A. Duetschler, S. Safai, D. Meer, D. Weber, A. Lomax, G. Fattori

PO-GePV-T-187 : Proton Stereotactic Radiosurgery with Shoot-Through Proton Arc Beams: Planning Feasibility and Dosimetry
W. Gu*, J. Zou, B. Teo, L. Dong, S. Nagda, M. Alonso-Basanta, T. Li

PO-GePV-T-188 : Accommodating a Proton PBS System in a Common Linac Vault- a Shielding Simulation
D. Fedorchenko, S. Alani, S. Koren*

PO-GePV-T-189 : Developing a Compact Proton Dielectric Wall Accelerator: Characterizing Pulse Delivery and Electromagnetic Dispersion in Annular Parallel-Plate Waveguides
M. Maher*, C. Lund, J. Bancheri, J. Seuntjens

PO-GePV-T-190 : Acceptance Testing and Commissioning of Two Multiple Room Proton Units in China: Challenges and Lessons
Y. Zheng*, Z. Li, Y. Jia, Y. Yang, Z. Li

PO-GePV-T-191 : Dosimetric Impacts of Couch Moving Rails On Proton Treatment Using Pencil-Beam Scanning
Y. Zhang, J. Park, J. Blalock, R. Stevens, P. Johnson, H. Grewal*

PO-GePV-T-192 : Estimation of Uncertainties in the Distal Edge of Proton Beams Introduced by Inherent Variations in the Thickness of Plates Used to Perform Radiobiology Experiments
D. Martinus*, D. Flint, S. Bright, U. Titt, S. Shaitelman, G. Sawakuchi

PO-GePV-T-193 : Miniature Optical Hydrophone for Detecting Proton Beam Range at Clinical Dose: An Initial Study
S. Sueyasu*, Y. Sakuyama, K. Miyazaki, M. Unlu, Y. Kuriyama, Y. Ishi, T. Uesugi, M. Fujii, M. Kobayashi, N. Kudo, Y. Chen, T. Matsuura

PO-GePV-T-194 : Event Severity, Self-Report Rate, and Textual Analysis From a Radiation Oncology Incident Learning System
R. McGurk*, D. Gu, J. Dooley, A. Amos, B. Chera, K. Adapa, L. Marks, L. Mazur

PO-GePV-T-195 : Departmental Quality, Safety and Health: Predicting Dosimetry Staff Stress Levels and RO-ILS Events as a Function of Planning and Scheduling Metrics
R. Price*, Y. Huang, B. Salter

PO-GePV-T-196 : Challenges of Patient Immobilization and Setup for Head Neck Cancer Patients Undergoing External Beam Radiation Therapy
N. Yu*, N. Woody, S. Koyfman, P. Xia

PO-GePV-T-197 : A Clinically Relevant Online Patient QA Solution for Adaptive Radiation Therapy with Daily CT Scans and EPID-Based in Vivo Dosimetry: A Feasible Study On Rectal Cancer
L. Chen*, J. Wang, B. Feng, L. Yu, j. zhao, W. Hu, Z. Zhang

PO-GePV-T-198 : A Novel Workflow Utilizing 3D-Printing to Reduce Errors Associated with Creating Electron Blocks
C. Mart*, D. McDonald, N. Anderson, J. Peng

PO-GePV-T-199 : Development of the Prediction Model of Multi-Leaf Collimator Position Errors Using the Characteristics of Error-Related Patterns in Non-Heterogeneous Conditions
H. Sheen*, H. Shin, H. Kim, C. Kim, J. Kim, J. Kim, C. Hong

PO-GePV-T-200 : A Lung Motion Phantom for Free Breathing and DIBH (Deep Inspiration Breathing Hold)
J. Kwag*

PO-GePV-T-201 : Analysis of IGRT QA Image Accuracy Over One Year
S. Roy*, B. Sarkar, A. Pradhan

PO-GePV-T-202 : The Deliverability of Dynamic Conformal Arc Therapy (DCAT) and Its Influence On Patient Dose
C. Kim*, H. Kim, D. Jung, D. Kim, J. Kim

PO-GePV-T-203 : Improving Quality and Consistency in HARVEST Clinical Trial for Breast Cancer Patients Receiving Hypofractionated Intensity-Modulated Radiotherapy Via Knowledge-Based Planning
M. Chen*, L. Cao, C. Xu, J. Chen

PO-GePV-T-204 : Implementation of a Daily QA Program for Clinically-Deployed Custom Software in Radiation Oncology
Z. Iqbal*, R. Cardan, R. Popple, C. Cardenas

PO-GePV-T-205 : Quantifying Accuracy of Optical Imaging Surface Dosimetry
A. Niver*, B. Pogue

PO-GePV-T-206 : Evaluating Radiotherapy Infrastructure and Staffing in a Lower-Middle Income Country (LMIC) Setting Using Failure Mode and Effects Analysis (FMEA)
A. Yorke*, E. Addison, S. Tagoe, E. Ford

PO-GePV-T-207 : Radiation Dose Tolerance of a Medtronic Deep Brain Stimulator Based On OSLD Measurement
M. Klash*, S. Klash, E. Mcclelland, L. Brennan, J. Grubic

PO-GePV-T-208 : Quantitative Risk Assessment for a Newly Opened Hospital by AAPM TG-100
J. Son*, M. Cho, S. Choi, K. Park, C. Hong

PO-GePV-T-209 : Prospective Risk Analysis of Intracranial Stereotactic Radiosurgery Using Failure Mode Effect Analysis and Cost Benefit Analysis of the Use of Flattening Filter Free Beams
G. Mamballikalam*, K. Ganesh, S. Kumar, J. Pattaloor Mana, C. CO, J. Calister, A. Basith

PO-GePV-T-210 : Feasibility of Reducing Bone Marrow Dose for Esophageal and Lung Radiotherapy
N. Papanikolaou, N. Kirby, P. Myers*, J. Patel

PO-GePV-T-211 : Advanced Physics Chart Check Automation Method to Increase Safety and Efficiency
M. Cho*, J. Son, S. Choi, C. Hong, K. Park

PO-GePV-T-212 : Radiation Dose Tolerance Assessment of the Zio Heart Monitor
S. Klash*, L. Brennan, J. Graham

PO-GePV-T-213 : Black Swans in Radiation Therapy
K. Maloney*, L. Myers

PO-GePV-T-214 : Development of Effective Specialized Checklists for Radiotherapy Special Procedures: Image-Guided Volumetrically Modulated Total Body Irradiation (TBI)
P. Galavis*, C. Hitchen, J. Teruel Antolin, S. Ayyalasomayajula, M. Malin, S. Taneja

PO-GePV-T-215 : A Practical Workflow to Determine Patient-Specific Critical Organ Dose Constraints Considering Organ-Specific Radiobiological Effect for Reirradiation Planning
A. Tai*, E. Quashie, K. Kainz, E. Paulson, E. Gore, J. Bovi, M. Awan, M. Straza, X. Li

PO-GePV-T-216 : On Margins for Ultra-Hypo Fractionated EBRT Prostate
F. Van den Heuvel*, I. Jacobs, T. Harthoorn, I. De Marco, B. Mous - Van Der Wegen, V. Coen

PO-GePV-T-217 : EPID-Based 3D In-Vivo Dose Verification Using Deep Learning Inference Modelling
D. Yang*, j. fan, J. Wang, W. Hu

PO-GePV-T-218 : Comparison of TrueBeam Portal Dosimetry Results Across a Large Health System
J. Donaghue*, S. Gajdos, L. Muhieddine Mossolly

PO-GePV-T-219 : A Deep Neural Network Approach For Enhancing Signal-To-Noise Ratio of MV EPID Images Using Optimized KV-To-MV Image-Regression Models
M. Ahmed*, H. Nourzadeh

PO-GePV-T-220 : A Transportable Hypoxic Phantom for DNA Irradiation Damage Studies
D. Johnson*, M. Tambasco

PO-GePV-T-221 : Application Research of Position Calibration Function of Octavius®‐4D System in Oncology Radiotherapy Dose Verification
L. Duan*, W. Qi, Y. Chen, W. Shen, J. Chen

PO-GePV-T-222 : Investigating a Correlation Between MLC Positional Errors and IMRT QA Passing Rate
A. Yousif, M. Abdelgawad, A. Eldib*, S. El-sayed, M. Talaat

PO-GePV-T-223 : Gradient Compensation Versus TG-218 Gamma Analysis for Patient-Specific Quality Assurance
G. Defillippo, S. Mashouf, P. Teo, J. Foy, P. Yadav, G. Khelashvili, M. Gopalakrishnan*, I. Das

PO-GePV-T-224 : On Mitigating the Effects of Imaging Dose During Patient Specific QA On a Moving ArcCheck Phantom Using the Accuray Radixact Real Time Tracking System
R. Teboh Forbang*, B. Lewis, A. Ndlovu

PO-GePV-T-225 : The Plan Complexity of VMAT for the Pelvic Region Of
Halcyon Linac Using Dual-Layer Multi-Leaf Collimator

Q. Zhu*, Z. Wang, B. Yang, Y. Liang, H. Zhu, W. Zhang, J. Qiu

PO-GePV-T-226 : A Shifted Setup Method of Patient-Specific QA for Off-Centered Targets Treated On An MR-Linac
S. Thrower, M. Vaccarelli, M. Muruganandham, J. Yang*,

PO-GePV-T-227 : Evaluation of the True Composite and Field-By-Field QA Methods in Detecting Systematic MLC Positioning Errors
H. Aldawood, D. Shvydka, E. Salari*

PO-GePV-T-228 : Validating TG119 VMAT Commissioning On a Volumetric Phantom
J. Delgado, D. Brito, D. Garcia, S. Serrano-aguirre, Y. Rodriguez-gago,

PO-GePV-T-229 : Comparison of Sun Nuclear ArcCHECK and IBA MatriXX Resolution for Patient Specific IMRT QA
A. Boria*, Z. Su, P. Sabouri, G. Narayanasamy, F. Kalantari

PO-GePV-T-230 : Patient-Specific Quality Assurance Multi-Leaf Collimator Error Detection: Comparison of EPID and Array-Based Methods
S. Roles*, J. Winiecki, A. Rapchak, G. Owen, C. Mart, D. McDonald, W. Godwin, M. Maynard, J. Peng

PO-GePV-T-231 : Evaluation and Improvement of Angular Response for a Commercial 2D Detector Array for Patient Specific QA
S. Wang*, Y. Zheng

PO-GePV-T-232 : Comparative Analysis of the MU/dose Verification of SBRT Patient Between the C-Arm and Ring Gantry Linear Accelerator in "best of the Plan" Scenario
K. P*, C. Sureka, B. Sarkar, S. Biswal, S. Chattopadhyay, S. Mondal, S. Roy Chowdhury, K. George, J. Bhattacharya, P. Soren, T. Shahid

PO-GePV-T-233 : Detector Response in the Dosimetry of Small Modulated Arc Fields: An Experimental Study
J. Larraga-Gutierrez*, O. Garcia-Garduno, J. Herrera-gonzalez

PO-GePV-T-234 : Clinical Implementation of Logfile Based Patient Specific QA
S. Stathakis*, T. Cuthbert, P. Mavroidis

PO-GePV-T-235 : A Synthesized Gamma Map-Based Patient-Specific VMAT QA Using a Generative Adversarial Network
T. Matsuura*, D. Kawahara, A. Saito, K. Yamada, S. Ozawa, Y. Nagata

PO-GePV-T-237 : Using a Commercially Available System for MLC Logfile Based Delivery Verification and Plan Evaluation
S. Stathakis*, T. Cuthbert, W. Jones, P. Mavroidis

PO-GePV-T-238 : Towards Real-Time Patient Dosimetry During MR-Guided Radiotherapy
R. Toquero*, H. Nusrat

PO-GePV-T-239 : Per-Fraction Deviation in Logfile Parameters Reported in a Single VMAT Arc
M. Snyder*, D. To, D. Drake, J. Liang, D. Lack

PO-GePV-T-240 : IMRT QA Result Prediction by MLC Transmission Decomposition
J. Stasko*, W. Ferris, D. Adam, W. Culberson, S. Frigo

PO-GePV-T-241 : A Simple and Cost-Effective System for Pre-Delivery Patient-Specific and Weekly Quality Assurance Based On Log File Analysis
A. Fomujong*, P. Imandi, R. Teboh Forbang, P. Mobit

PO-GePV-T-242 : Identifying Poor SBRT Plan Performance Using IMRT QA and Complexity Metrics
M. Glenn*, E. Ford, M. Kim

PO-GePV-T-243 : Process Based Tolerance and Action Limits for IMRT/SBRT Delivery On a Novel Biology-Guided Radiotherapy System
M. Ashraf*, N. Kovalchuk, J. Fu, M. Shi, S. Cui, B. Han, M. Surucu

PO-GePV-T-244 : Initial Evaluation of ArcCHECK Integration with the SunCHEK QA Platform
C. Stambaugh*, E. Meyer, C. Melhus

PO-GePV-T-245 : Dependence of Log File Based IMRT QA of Lung SBRT Plans On TPS Dose Algorithm
G. Baltz*, R. Manigold, S. Kirsner

PO-GePV-T-246 : Does Down-Sampling Trajectory File Data to the DICOM-RT Control Points Compromise Dosimetric Accuracy?
Y. Wu, Y. Zhang, B. Erickson, L. Lay, M. Alber, J. Adamson*

PO-GePV-T-247 : Energy Dependence of NanoDot Optically Stimulated Luminescence Dosimeters in the Superficial Radiation Therapy Energy Range
Y. Lee*, S. Davis, R. Tolakanahalli, A. Gutierrez

PO-GePV-T-248 : Using 3D Printing to Design Reusable Boluses for Patient OSLD Measurements
C. Kabat*, I. Alecu, H. Paschal, N. Kirby, S. Stathakis, N. Papanikolaou

PO-GePV-T-249 : Evaluation of Surface Dose Prediction Accuracy of Precision Radixact Tomotherapy Treatment Planning System Using OSL Nanodots
A. Alphonse*, S. Pokharel, M. Kasper, S. Richter, S. Rana

PO-GePV-T-250 : In Vivo Dosimetry with GAFCHROMIC EBT3 Film in Twice-A-Day Total-Body Irradiation Radiotherapy
X. Zhang*, Y. Zhang, R. Alibazi Behbahani, J. Kilian-Meneghin, X. Wang, E. Simiele, Y. Zhang, K. Nie, N. Yue

PO-GePV-T-251 : Exploration of One-Step Auto Planning: Tomotherapy MLC Sequence Prediction
Y. Liu*, X. Shang, G. Zhang, X. Le, W. Zhao, C. Xie, B. Qu, S. Xu

PO-GePV-T-252 : Reinforcement Learning to Speed Up Conjugate Gradient Optimization in IMRT
M. Hakala, S. Basiri, E. Kuusela, K. Bush*

PO-GePV-T-253 : Hippocampal Sparing Whole Brain: RapidPlan Model V2.0 Validation Process
R. Foster*, R. Clark, A. Magliari

PO-GePV-T-254 : Transformer Network Assisted VMAT Optimization
P. Dong*, L. Xing

PO-GePV-T-255 : Intensity Based Optimization Using Monte Carlo Dose Distribution for VMAT Plans
N. Miri*, A. Pant, S. Bhagroo, J. Mathews, D. Nazareth

PO-GePV-T-256 : Radiotherapy Planning with Monte Carlo Dose Calculation and Intensity Optimization On Control Points
N. Miri*, A. Pant, S. Bhagroo, J. Mathews, D. Nazareth

PO-GePV-T-257 : Dose Predictions Facilitate Efficient Optimization of High-Quality Prostate Treatment Plans
S. Robertson*, D. Lasher, B. Kassas

PO-GePV-T-258 : A Novel Two-Step Optimization Method Incorporating Knowledge-Based Planning for Head-And-Neck Radiotherapy
H. Liu*, B. Sintay, D. Wiant

PO-GePV-T-259 : A Novel Planning Method to Mitigate Effects of Shoulder Setup and Positioning Variations for Volumetric Modulated Arc Therapy (VMAT) of Head and Neck Cancer
Y. Yang*, J. Peng, X. Liu, Z. Li, Y. Zheng

PO-GePV-T-260 : Case-Based Reasoning Optimization Algorithm for Inverse Planning in Head and Neck Radiotherapy
R. Reiazi*, S. Prajapati, A. Mohamed, C. Fuller, M. Salehpour

PO-GePV-T-261 : Hybrid Forward and Inverse Planning Approach For
Lattice Radiation Therapy

G. Shukla*, A. Mahadevan

PO-GePV-T-262 : Learning DVH Criteria in Radiation Therapy Treatment Planning
F. Ahmadi*, T. McNutt, K. Ghobadi

PO-GePV-T-263 : Evaluation of a Deep-Learning-Based Planning Solution for Rectal Cancer
j. Peng, J. Wang

PO-GePV-T-264 : Implementation of a Static and Dynamic MLC Model in a GPU-Accelerated Monte Carlo Engine
E. Brost, H. Wan Chan Tseung, J. Antolak*

PO-GePV-T-265 : Electronic Portal Imaging Device (EPID) Modeling in EGSnrc/DOSXYZnrc with Effective Atomic Number Scaling
J. Yoon*, H. Jung, D. Zheng, I. Yeo

PO-GePV-T-266 : Initial Assessments of Delta4 TPV, a Monte Carlo-Based Second Check Software
F. Su*, X. Li, H. Zhao, S. Bhagroo, P. Rassiah-Szegedi, B. Salter, V. Sarkar

PO-GePV-T-267 : Validation of Breast Radiotherapy Planning Using PENELOPE Code
G. de Souza Faés, V. Botelho, M. Alva-Sánchez, F. Brüning, T. Pianoschi , A. Marques Da Silva*

PO-GePV-T-268 : Block Modeling for Pediatric Patients Treated By Co-60 Radiotherapy in the National Wilms Tumor Study Cohort
J. Jung, M. Nik Akhtar*, M. Mille, M. Gopalakrishnan, C. Lee, J. Kalapurakal, C. Lee

PO-GePV-T-269 : Dose Uncertainties of Polymer Gel Dosimeter May Not Be Influenced by Temperature Variation During Transportation
S. Kurokawa*, H. Tachibana, T. Akimoto

PO-GePV-T-270 : Orthovoltage to Monoenergetic Photon Beam Energy Correction Factor for HyperScint Scintillation Dosimeter
B. Insley*, D. Bartkoski, L. Che Fru, M. Salehpour

PO-GePV-T-271 : Update of the GEANT4-DNA Software for Simulation of Radiation Chemical Yield for Reactive Water Radiolysis Species at Different Temperature and PH
J. Bian, J. Duran, W. Shin, J. Ramos-Mendez, L. Childress, J. Sankey, J. Seuntjens, S. Abbasinejad Enger*,

PO-GePV-T-272 : Optimizing the CBCT Technique for Linac Synchronized NIPAM 3D Dosimetry
K. Lakrad*, M. Oldham, J. Adamson

PO-GePV-T-273 : Evaluation of a Novel Plastic Scintillation Detector Performance in MR-LINAC
K. Yun*, M. Hwang, D. Lee, S. Oh, M. Feijoo, S. Beron, D. Pavord

PO-GePV-T-274 : Comparative Dosimetric, Setup Margin and Treatment Time Analysis Between Ring Gantry and C-Arm Linear Accelerators for VMAT Based Craniospinal Irradiation Plans
S. Biswal*, B. Sarkar, M. Goyal

PO-GePV-T-275 : Breast Conformal Radiotherapy with Sequential Boost Versus Intensity-Modulated Radiation Therapy with a Simultaneously Integrated Boost
G. Komisopoulos*, P. Mavroidis, F. Simopoulou, G. Kyrgias, N. Papanikolaou, K. Theodorou

PO-GePV-T-276 : Assessment of Varian Ethos Intelligent Optimization Engine (IOE) for Stereotactic Body Radiation Therapy (SBRT) Treatment Plans for Lung Metastases
A. Pacheco*, S. Pokharel, C. Cross

PO-GePV-T-277 : Calculated Vs In-Vivo Film Surface Dose-Area Comparison for Breast Radiotherapy
A. Malhotra*, E. Carpentier, C. Duzenli

PO-GePV-T-278 : Free Breathing Or Breath Hold for Pancreas Treatment Planning?
T. Lin*, C. Ma

PO-GePV-T-279 : Are Auto-Generated Organ-At-Risk Contours Good Enough in Head-And-Neck Radiotherapy?
H. Liu*, B. Sintay, D. Wiant

PO-GePV-T-280 : The Optimal Photon Energy for Prostate Cancer Radiation Therapy- a Systematic Literature Review
C. Njeh*, S. Ng, B. Thorndyke, L. Fanelli, K. Huang, K. Hutchins

PO-GePV-T-281 : Modeling and Validation of Knowledge-Based Planning for Prostate with Simultaneous Integrated Boost to Dominant Intra-Prostatic Lesion
S. Kuznetsova*, A. Lui, T. Seibert, K. Moore

PO-GePV-T-282 : Evaluation of VMAT & IMRT Planning Strategies for Advanced Prostate Cancer Patients with Bilateral Hip Prostheses
J. Xu*, T. Cosely, T. Bouton, B. Zhang, D. Han, J. Zhou, S. Chen

PO-GePV-T-283 : Adaptive Radiation Therapy Planning Using Daily CBCT Image Sets in Head and Neck Cancer Treatment
A. Beqiri*, R. He, C. Yang

PO-GePV-T-284 : Skin Dose Evaluation From Three Different IMRT Planning Technique On Beast Cancer Radiotherapy
R. He*, J. Martinez, C. Yang

PO-GePV-T-285 : A Study to Evaluate Optimal Energy Through Different Combination of Energy in Oesophageal Intensity Modulated Radiotherapy
V. HRIDYA*, D. Khanna, A. Raj, S. Padmanabhan, M. Palanisamy

PO-GePV-T-286 : Evaluation of An Angle Optimization Algorithm in Breast Cancer Treatment Planning
Y. Guo*, J. Wang

PO-GePV-T-287 : Evaluation of Dose Distribution Difference Between Plan and Delivery Using Kilovolt CT-Linac in Total Marrow and Lymphoid Irradiation
D. JIANG*, D. Deng, Y. Xiong, J. Gong, Y. Wei, H. Liu, X. Wang

PO-GePV-T-288 : A Treatment Planning Feasibility Study for Cranio-Spinal Irradiation (CSI) Using RefleXion X1
D. Pham*, T. Ngo, B. Han, M. Surucu, S. Hiniker, N. Kovalchuk

PO-GePV-T-289 : Model Based Setting Optimization for Patient Specific Quality Assurance of Clinical Plans Calculated Using Acuros XB
T. Chen*, H. Wang, J. Xue, J. Teruel Antolin, A. Mccarthy, P. Galavis, D. Barbee

PO-GePV-T-290 : Stereotactic Body Radiotherapy On a Ring-Gantry Based Linac with Novel Image Guiding System (Reflexion): Plan Quality Comparison with TrueBeam and Tomotherapy
B. Liu*, C. Han, T. Reilly, Y. Dorsainvil, K. Qing, Y. Chen, T. Williams, A. Liu

PO-GePV-T-291 : Correlation Between Modulation Indices and Gamma Passing Rate for Different Treatment Sites
E. Salari*, N. Sperling, E. Parsai

PO-GePV-T-292 : Can AI Auto-Segmentation Affect Treatment Plan Approval Decisions?
M. Jones*, K. Mcghee, P. Mavroidis, S. Stathakis

PO-GePV-T-293 : Dosimetric Analysis of Volumetric Modulated Arc Therapy for Extensive Skin Field Cancerization of the Scalp
A. Hafeez, T. Nurushev, A. Iwinski Sutter, T. Fox, B. Koontz, W. Curran, P. Potrebko*

PO-GePV-T-294 : A Multi-Institutional Multi-Platform Inter-Comparison of Dose Volume Histograms Construction Differences On Eight Commercial Treatment Planning and Dose Reporting Systems
G. Penoncello, Y. Gao, L. Sensoy, T. DeWees, M. Pepin, M. Voss, M. Cao, S. Herchko, S. Benedict, Y. Rong*,

PO-GePV-T-295 : Experimental Determination of Breast Skin Dose On Anthropomorphic Phantom Using VMAT and Field-In-Field Treatment Techniques
A. Cardona*, J. Rojas Lopez, P. Murina, A. Germanier, C. Venencia

PO-GePV-T-296 : Automatic Generation of Planning Volumes in Radiotherapy Using the Eclipse Scripting Application Programming Interface (ESAPI)
A. Ruiz*, M. Almada, C. Pfaff, F. Munoz, C. Venencia

PO-GePV-T-297 : Towards An Ultra-Fast Deep-Learning-Based Dose Engine for Prostate VMAT Using Knowledge Distillation
W. Tseng*, H. Liu, Y. Yang, C. Liu, B. Lu

PO-GePV-T-298 : Evaluation of the Dosimetric Difference Between Eclipse 16.1 and Eclipse 15.6
L. Zhuang*, Y. Qin

PO-GePV-T-299 : Title:Automated Testing Platform Within a Software Development Governance Framework for Treatment Planning System User Scripts
J. Lucido*, S. Seetamsetty, D. Ellerbusch, S. Shiraishi, J. Antolak, D. Moseley

PO-GePV-T-301 : Significant Decrease of Low-Dose to Normal Tissue Through the Optimization of Collimator Angles and Dynamic Gantry Range in Cervical Cancer VMAT Plan
C. Chen*, J. Shen, D. JIANG, C. Xie, Y. Zhong, X. Wang, H. Liu, H. Yu

PO-GePV-T-302 : Dosimetric Comparison Between TMR Based Algorithm and Collapsed Cone Algorithm for Radiodynamic Therapy Treatment Planning Using 45MV Beams
A. Eldib, J. Liu*, J. Panetta, M. Sherif, C. Ma

PO-GePV-T-303 : Quality and Safety Control with Eclipse Scripting for Dose Calculation Using Acuros XB Algorithm
J. Teruel Antolin, J. Rembish*, I. Duarte, H. Wang, J. Xue, P. Galavis, D. Barbee, T. Chen

PO-GePV-T-304 : Determination of Optimal Indicators for Anatomy-Based Automated Beam Setup in Breast Cancer
E. Costa, A. Gobert, D. Dagot, Y. Jiang, J. Vu-Bezin*

PO-GePV-T-305 : Lessons Learned From the Commissioning of Acuros XB Dose Calculation Algorithm
J. Xue*, H. Wang, J. Teruel Antolin, D. Barbee, P. Galavis, A. Mccarthy, T. Chen

PO-GePV-T-306 : Quantification of Dose Perturbation Using the DirectDensity Algorithm with Metallic Implants
M. Schwer, A. Geiersbach*, J. Shah, A. Ritter, E. Klein

PO-GePV-T-307 : Comparison of Manual, Isodose-Based, and Projection-Based PTV Contouring Methods for 3D Conformal Breast Cancer Treatment Planning
P. Jensen*, Z. Chen

PO-GePV-T-308 : Anatomic Optimization of VMAT Field Arrangement and Isocenter Placement for Cardiac Sparing Whole-Lung Radiation Therapy
J. Teruel Antolin*, P. Galavis, A. Mccarthy, B. Cooper, D. Barbee

PO-GePV-T-309 : Impact of CT-To-Density Table On Plan Quality
C. Yan*

PO-GePV-T-310 : Implementation and Validation of a Couch Model in RayStation TPS
E. DeLuca*, E. Cichewicz

PO-GePV-T-311 : Independent Beam Modeling of a Closed Ethos System in RayStation TPS
C. Foote*, D. McClatchy, J. Pursley

PO-GePV-T-312 : Clinical Plan Sensitivity to TPS Parameters and the Complexity Metrics That Best Capture This Relationship
F. Brooks*, M. Glenn, J. Pollard-Larkin, R. Howell, C. Peterson, C. Nelson, C. Clark, S. Kry

PO-GePV-T-313 : Limited Dataset Transfer Learning for Deep Learning Dose Prediction On Head and Neck Cancer Patients Treated with Involved Nodal Radiation Therapy Using Artificial Intelligence-Based Radiomics (INRT-AIR)
H. Wang*, M. Lin, D. Sher, S. Jiang, D. Nguyen

PO-GePV-T-314 : Development and Validation of Knowledge Based Planning Model for Prostate Node Positive Stereotactic Body Radiation Therapy
R. Phurailatpam*, D. Patil, V. Raveendran, K. Joshi, J. Pk, P. Maitre, V. Murthy

PO-GePV-T-315 : Assess the Impact of Expanding the CT Calibration Curve On the Quality of Dose Calculation
K. Alhamad*, A. Alhazmi, F. Hadi

PO-GePV-T-316 : Pre-Clinical Validation of Volumetric Modulated Arc Therapy Based Total Bone Marrow Irradiation in Halcyon™ Ring Gantry Linear Accelerator:
B. Sarkar*, T. Shahid, S. Mondal, S. Biswal, A. De, M. Mukherjee, S. Roy Chowdhury, J. Bhattacharya, K. George, T. Ghosh, P. Soren, A. Banik, P. Das, S. Ghosh, I. Gunturu, C. Pusarla, A. Mishra, S. Mitra

PO-GePV-T-317 : The Comparison of Collapsed Cone and Monte Carlo Tangential Breast EBRT Plans
M. Goss*, M. Trombetta, V. Eisen, V. Demartino

PO-GePV-T-318 : Effects of Swelling and Automated Flash On IMRT Vulva Planning
M. Goss*, K. Dara, K. Yun, D. Pavord

PO-GePV-T-319 : Sensitivity Analysis of Central and Peripheral Dosimetric Leaf Gap for a Double-Stacked Multileaf Collimator
M. BaradaranGhahfarokhi, A. Yock*,

PO-GePV-T-320 : Critical Structure Dose Limit Simplification for Pandemic-Related Hypofractionation of Treatment Naive Head and Neck Cancer Patients
R. Price*, T. Galloway, C. Ma

PO-GePV-T-321 : Evaluation of Dose Level Differences Across a Range of Target Sizes for Two Commercial Dose Calculation Algorithms
S. Gardner*, S. Wang, K. Snyder, Y. Huang, C. Smith, I. Chetty, B. Miller

PO-GePV-T-322 : Missing Link Found:Trending Flatness On Both Axes in SNC Daily QA 3
A. Lippuner*, H. Li

PO-GePV-T-323 : Open Source Tool to Compare MR-Linac Logfiles with Monaco RT Plans
M. Kusters*

PO-GePV-T-324 : Towards a Halcyon Proactive Maintenance Program Based On MPC-BGM Data Trend Analysis
J. Morales Monzon*, P. Taylor, J. Reed, C. Rosen, F. Lerma

PO-GePV-T-325 : Dosimetric Comparison of 10 Commissioned Elekta VersaHD Linear Accelerators
J. Berzanske*, D. Campos, A. Soldner, J. Sohn, S. Oh, B. Coopey, M. Johnson, D. Pavord, B. King, M. Goss

PO-GePV-T-326 : Institutional 18 MV Reference Beam Data for Varian TrueBeam Linacs
S. Bhagroo*, K. Hopfensperger, R. Price, J. Kunz, F. Su, G. Nelson, A. Paxton

PO-GePV-T-327 : A Practical Tool for Light-To-Radiation Field Coincidence Linear Accelerator Quality Assurance
D. Van Elburg*, G. Pierce, P. Martinez, J. Madamesila

PO-GePV-T-328 : Automation of Clinical Trial Credentialing Letter Upload
L. Acuna Scafati*, P. Taylor, J. Lowenstein, P. Boise

PO-GePV-T-329 : A Critical Analysis of Adaptive Therapy Guidelines for Patient Safety, Treatment Quality and System Safety Tests
J. Hindmarsh*, S. Dieterich, J. Booth, P. Keall

PO-GePV-T-330 : Linear Accelerator Head Leakage Testing Via XR-SP2 Radiochromic Film
Z. Xia, D. Johnson*,

PO-GePV-T-331 : General Interface with Scripting On Human Interactive Device for PSQA Automation
J. Zhang*, J. Baker, Y. Cao, J. Chang

PO-GePV-T-332 : Role of MR-Scanning Water Tank in Commissioning of MR-Linac Unit
P. Yadav*, I. Das

PO-GePV-T-333 : Sensitivity of Small Field Beam Profiles to Gantry Tilt
A. Mangat*

PO-GePV-T-334 : Measurement of Photon Beam Energy Changes On An Elekta Versa HD Using 5 Methods
D. Pavord*, K. Yun, J. Berzanske, M. Goss, S. Denhoff

PO-GePV-T-335 : One Year Quality Assurance Experience of the First RefleXion System
B. Han*, M. Shi, S. Cui, C. Chuang, N. Kovalchuk, L. Xing, M. Surucu

PO-GePV-T-336 : Prediction of the Output Fluctuation of Monitor Chamber Using the Accumulated Dose Drift
R. Alibazi Behbahani*, X. Zhang, J. Kilian-Meneghin, Y. Zhang, T. Cui, E. Simiele, K. Nie, N. Yue, X. Wang

PO-GePV-T-337 : Extending the Lifetime of Optically Stimulated Luminescent Dosimeters for Use in Output Checks at IROC- Houston
H. Scott*, P. Alvarez, R. Howell, A. Riegel, S. Kry

PO-GePV-T-338 : Improving Imaging-Based Winston-Lutz Results with Synthetic CT Phantoms
M. Fan, D. Quiring, P. Sansourekidou*, Y. Natsuaki

PO-GePV-T-339 : Development of Supplemental Pre-Treatment Daily Quality Assurance On the Radixact Real-Time Tumor Tracking System
R. Teboh Forbang*, B. Lewis, A. Ndlovu

PO-GePV-T-340 : Reference Dosimetry Incorporating Lateral Dose Distribution, Prp
S. Kucuker Dogan*, M. Gopalakrishnan, I. Das

PO-GePV-T-341 : Geometric Analysis of Room Laser Alignment Using a 3D Printed Tool
N. Otero*, M. Braswell, S. Sutlief

PO-GePV-T-342 : Investigation of Smoothing Filter Effects On Beam Scanning Data
S. Lee*, J. Cammin, B. Zhang, K. Jiang, M. MacFarlane, J. Zhou, B. Yi, S. Chen

PO-GePV-T-343 : Evaluation of the New Independent Dose Calculation SciMoCa as Patient-Specific Quality Assurance in the CyberKnife Treatment of Brain Metastases and Lung Cancer
K. Sakai*, Y. Nakajima, Y. Suda, S. Kito, Y. Sato, K. Yasui, Y. Arai, T. Takizawa, M. Sato, Y. Fujita

PO-GePV-T-344 : Evaluation of a Collapsed Cone Second Check Algorithm Using TG-219 Methodologies
J. Donaghue*, S. Gajdos, L. Muhieddine Mossolly

PO-GePV-T-345 : Logfile Based Dose Delivery Verification Using a 3rd Party 3D Dose Calculation Software
A. Alvarez*, K. Kelly, M. Naessig, M. Bonnen, N. Papanikolaou, S. Stathakis

PO-GePV-T-346 : Dosimetric and Radiobiological Evaluation of the Dose Distributions From the Treatment Plan and Logfiles in Head & Neck Radiotherapy
T. Cuthbert*, P. Mavroidis, W. Jones, S. Stathakis

PO-GePV-T-347 : Secondary Monitor Unit Verification Comparison Between Single Point and 3D Dose Calculations
K. Kelly*, A. Alvarez, M. Naessig, T. Wagner, N. Papanikolaou, S. Stathakis

PO-GePV-T-348 : Comparison of Monte Carlo Computed Gamma Indices and Measured Patient Specific IMRT QA Results
K. Kelly*, M. Naessig, A. Alvarez, M. Bonnen, N. Papanikolaou, S. Stathakis

PO-GePV-T-349 : Independent 3D Dose-Volume Verification for Brainlab
Elements MultiMet Patients

M. Naessig*, K. Kelly, A. Alvarez, T. Wagner, E. Galvan, N. Papanikolaou, S. Stathakis

PO-GePV-T-350 : Variation of SpaceOAR Density and Volume Throughout the Course of Prostate Radiation Therapy Treatments
B. King*, A. Harpley, A. Dare, D. Campos, M. Hwang, M. Goss, J. Sohn

PO-GePV-T-351 : A Dosimetric Evaluation of 3D-Printed Thermoplastic Polyurethane (TPU) for Use as a Custom Breast Bolus
K. Bittinger*, G. Graeper

PO-GePV-T-352 : Characterization of a Brass Bolus
M. Hajduk*, E. Cichewicz

PO-GePV-T-353 : Study On the Possibility of An Intensity Modulation Technique Using a Scanning X-Ray Pencil Beam Based On Monte Carlo Simulation
C. Guo*, K. Men, Y. Hu

PO-GePV-T-354 : A New Generation Co-IMRT Device for Low- and Middle-Income Countries: The Effect of Co-Source Size On IMRT Plan Quality for Head and Neck Cases
B. Sengupta*, A. Shulman, K. Oh, P. Sponseller, C. Cardenas, L. Court, E. Ford

PO-GePV-T-355 : Implementation and Comparison of Manual Field in Field Technique with Compensator Based Technique in Total Body Irradiation
P. Bharath*, D. Khanna, M. Palanisamy, E. Rajadurai, N. Hima, T. Vivek, J. Saro

PO-GePV-T-356 : Exploring Use Cases of Non-Isocentric Dynamic Trajectory Radiotherapy Enabled Through Dynamic Table Translations
G. Guyer*, S. Mueller, C. Koechli, D. Frei, W. Volken, J. Bertholet, P. Mackeprang, H. Loebner, D. Aebersold, P. Manser, M. Fix

PO-GePV-T-357 : External Beam Alternatives to Vaginal Cuff Brachytherapy
Z. Carter, J. Fang, X. Li*

PO-GePV-T-358 : Design and Construction of a Total Body Irradiation (TBI) Apparatus with Lung Blocking for Implementation of a Decubitus High Dose TBI Program
K. Schaefer*, J. Huang, M. Lawless, L. DiMaso-Myers, T. Tyson, K. Bradley

PO-GePV-T-359 : A Simple Rule of Thumb to Decide Between Head-First Supine (HFS) Or Feet-First Supine (FFS) for Certain Patients Undergoing Radiotherapy
H. Kadji*, B. Lewis, T. Besso, J. Volpe, R. Teboh Forbang

PO-GePV-T-360 : Developing a Web Based Virtual Environment to Enhance Radiation Therapy Education During COVID-19 and Beyond
R. Sheu*, M. Dimopoulos, S. Skubish

PO-GePV-T-361 : Beam Characteristics and Reproducibility of a Compact Linac Assembly with Rapid Gantry Rotation Feature Designed for a PET-Linac Platform
J. Tan*, G. Gibbard, J. Visak, T. Zhuang, Y. Park, M. Lin, A. Godley, A. Pompos, S. Jiang, B. Cai

PO-GePV-T-362 : Robust Planning for ITV-Based Lung VMAT SBRT
A. Buczek*, S. Peca

PO-GePV-T-363 : Compact System for 4D Treatment Planning and Dose Verification Based On Flexible Movement
C. Nunes*, E. Jiménez-ortega, R. Linares-Doblado, A. Leal Plaza

PO-GePV-T-364 : 4D-CT Prediction of Inter- and Intrafraction Lung Tumor Motion During Fractionated Stereotactic Body Radiation Therapy
A. Rashid*, Y. Niu, D. Pang

PO-GePV-T-365 : Impact of Flattening Filter On Output Correction Factor of MicroDiamond Detector in Small-Field Stereotactic Radiosurgery Beams
Y. Arai*, Y. Sato, T. Takizawa, K. Fujii, K. Yasui, K. Sakai, M. Sato, Y. Nakajima, Y. Fujita

PO-GePV-T-367 : Evaluation of a Novel-Integrated Quality Assurance Phantom for Winston-Lutz Test
A. Rusnak*, E. Klein, Y. Yang

PO-GePV-T-368 : Validation of a Beam Model for Single Isocenter Multi-Mets Treatment Using SRS MapCheck
J. Xue*, J. Teruel Antolin, N. Bice, P. Galavis, M. Malin, A. Rea, D. Barbee

PO-GePV-T-369 : A Multi-Detector Comparison of the Measured Relative Output Factors for Elekta Gamma Knife ICON
D. Shrestha*, M. Lowe, S. Herchko, S. Yaddanapudi, S. Stojadinovic

PO-GePV-T-370 : The Impact of Applying TRS 483 Recommendations Correction Factor for Cyberknife Cones Output with Different Types of Detectors
M. Alfishawy*, I. Al Amri, M. Gurumani, N. Babu

PO-GePV-T-371 : Bleaching Times of OSLDs Using High Intensity LEDs
J. Larraga-Gutierrez, O. Garcia-Garduno*

PO-GePV-T-372 : Evaluation of a Submillimeter-Resolution Detector Array for SRS Dosimetry
P. Sabouri, A. Boria, F. Kalantari, N. Shrestha, G. Narayanasamy, M. O'neil, Z. Su*

PO-GePV-T-373 : Evolution and Cause of Rotation-Induced Couch Shift for a New SRS-Capable Linac
X. Zhai*, Y. Liang, M. Zhang, L. Voros, H. Zhang, B. Mueller, Y. Song

PO-GePV-T-374 : Use of An Extended-Length Phantom for Varian PitchPerfect 6DoF Couch Tilt Verification Measurements
J. Setianegara*, H. Li, Y. Hao

PO-GePV-T-375 : Backlash of a Multileaf Collimator
A. Kulmala, T. Paasonen*, L. Koivula, A. Rintala, M. Tenhunen

PO-GePV-T-376 : Small Field Dosimetric Characterization of 7MV FFF Photons for Stereotactic MR-Guided Adaptive Radiotherapy Using the Unity MR-Linac
M. Hwang*, X. Chen, S. Oh, D. Lee, D. Pavord, B. Coopey, J. Sohn

PO-GePV-T-377 : Exploration of a Monte Carlo-Powered 3D Dose Verification of Single-Isocenter Multiple-Target SRS Plans
G. Cui*, J. Duan, F. Yin

PO-GePV-T-378 : End-To-End Validation of Single-Isocentric SRS for Multiple Brain Metastases Utilizing a High-Definition Detector Array
R. Badkul*, H. Li, S. Awan, F. Wang, H. Jiang

PO-GePV-T-379 : Assessment of Commercial Patient Specific Quality Assurance (PSQA) Devices for LINAC-Based Stereotactic Radiotherapy Plans
S. James, E. Elder, C. Huh, A. Al-Basheer*, J. Barrett, A. Maghsoodpour, F. Mostafaei

PO-GePV-T-380 : 3D Printed ABS Breast Phantom for GammaPod
S. Becker*, K. Stump, W. Culberson, Y. Poirier, H. Zhang, M. Guerrero, B. Yi, E. Nichols

PO-GePV-T-381 : Dose Rate Versus Gantry Speed Performance Evaluation for SRT/SBRT Treatment Deliveries Using DICOM RT Plans
A. Bredikin*, M. Walsh

PO-GePV-T-382 : Comparison of IMRT Quality Assurance for SRS Plans Using MapCheck2 in High-Density Mode Versus MyQA SRS
C. Thropp*, L. Buchanan, Y. Yang, G. Cardarelli

PO-GePV-T-383 : Evaluation of the Sun Nuclear SRSMapCHECK for Patient-Specific Quality Assurance On the ZAP-X Radiosurgery Machine
Y. Lei*, C. Jenkins, M. Halfman, Q. Xu, P. Rojas Castillo, X. Yan, S. Wang

PO-GePV-T-384 : Role and Adequacy of SRS MapCheck and NanoDots in Data Validation and End-To-End Testing of Stereotactic Radiosurgery (SRS) Cone Planning System
S. Awan*, S. Gupta-burt, R. Badkul, H. Li, A. Meigooni

PO-GePV-T-385 : Comparison of SRS QA Tools for Single and Multiple Target SRS Plans
C. Teng*, E. Sudentas, L. Fu, M. Chao, Y. Lo

PO-GePV-T-386 : Cross-Validation of Patient Positioning Systems Using An Optical Surface Image Guidance Platform
D. Pinkham*, S. Hancock

PO-GePV-T-387 : Evaluation of 4Pi Arc Positioning for Cranial VMAT SRS in Elements
B. Loughery*, C. Knill, R. Sandhu, L. Lin, Z. Seymour

PO-GePV-T-388 : Knowledge Based Planning (KBP) as a Clinical Solution for Stereotactic Radiosurgery Cases (SRS) for Multiple Brain Metastases
K. Guida, F. Wang, G. Gan, J. Patel, O. Trejo*, H. Li, H. Jiang

PO-GePV-T-389 : Dosimetric Comparison of Original Gamma Knife Plans and Optimized Gamma Knife Plans for Metastatic Brain Tumors
B. Delacruz*, E. Calugaru, B. Garcia, J. Chang, A. Goenka

PO-GePV-T-390 : Optimal Method of Radixact Treatment Planning for IROC Lung Phantom with Motion Table to Meet VALOR Protocol Constraints
S. Klash*, E. Mcclelland, C. Sobotka, S. Corbett

PO-GePV-T-391 : Evaluation of the Leksell Gamma Knife Lightning Optimizer for Stereotactic Radiosurgery of Postoperative Resection Cavities
R. Tolakanahalli*, Y. Lee, V. Chaswal, M. Tom, M. Hall, M. Mcdermott, M. Mehta, A. Gutierrez, R. Kotecha, D. Wieczorek

PO-GePV-T-392 : Association of Fiducial Marker Position with TargetVolume in Stereotactic Lung Irradiation: A Cross-Sectional Study
H. Akasaka*, K. Mizonobe, Y. Oki, K. Uehara, S. Tamura, Y. Munetomo, A. Harada, M. Nakayama, H. Kawaguchi, H. Mayahara

PO-GePV-T-393 : Evaluation of the Effects of Energy and Planned Dose Grid On Plan Quality Metrics for Treatment of Single Isocenter Multiple Target Brain Lesions
E. Salari, E. Parsai*, N. Sperling

PO-GePV-T-394 : Analysis of Dose Drop Off Distance From Planning Target Volume Edge to 50% for Small Volume Tumors with Different Techniques
A. Raj*, D. Khanna, V. HRIDYA, M. Palanisamy, S. Padmanabhan

PO-GePV-T-395 : Phantom Evaluation of Dose Calculation Accuracy Comparing BrainLab and Eclipse Treatment Planning Systems (TPS) for Brain Stereotactic Radiosurgery (SRS) with Simulation and Film Dosimetry
J. Yoon*, H. Jung, M. Milano, K. Usuki, S. Hardy, D. Zheng

PO-GePV-T-396 : Dosimetric Evaluation of Two Modern Planning Techniques for Single-Isocenter, Multiple Brain Metastases Fractionated-Stereotactic Radiosurgery with >20 Lesions
H. Jung*, J. Yoon, M. Milano, K. Usuki, S. Hardy, D. Zheng

PO-GePV-T-397 : Standardized Open-Source Volume Calculations for Small Voxelized Volumes
R. Cardan*, R. Popple

PO-GePV-T-398 : Dosimetric Evaluation of Patient Setup Errors in Cervical Spine Stereotactic Radiotherapy
A. Magnelli*, B. Guo, P. Qi, Y. Cho, T. Gray, S. Chao, J. Suh, P. Xia

PO-GePV-T-399 : Dosimetric Comparison Between a Single Isocenter Dynamic Conformal Arc Treatment Technique and the CyberKnife System for Multiple Brain Metastases SRS
J. Liu*, L. Wang, X. Chen, T. Lin, C. Ma

PO-GePV-T-400 : Conformity Distance Measure for Stereotactic Radiosurgery of Brain Metastases
Y. Cho, L. Lu*

PO-GePV-T-401 : Small Field MLC SRS DCA Plan Verification with Brainlab Elements
C. Geraghty*

PO-GePV-T-402 : Validation of Automatic Planning Scripts for Prostate SBRT with and Without Lymph Nodes
C. Venencia*, M. Almada, O. Apaza Blanco, I. Marquez, O. Muriano, P. Murina

PO-GePV-T-403 : Dosimetric Impact of Multileaf Collimator Leaf Width for Single Isocenter Multiple Metastases Radiosurgery Treatments and the Rotational Impact by Genetic Algorithm in Brainlab Elements™
C. Venencia*, J. Rojas Lopez, R. Diaz Moreno, S. Zunino

PO-GePV-T-404 : Genetic Algorithm and Neural Networks in Radiosurgery for Multiple Metastases
J. Rojas Lopez*, C. Venencia, M. Chesta, F. Tamarit

PO-GePV-T-405 : Effect of Dose Calculation Resolution On Monitor Unit in Stereotactic Radiosurgery Planning
H. Jiang*, N. Demez, D. Johnson, D. Soultan, D. Craft, H. Li, R. Badkul

PO-GePV-T-406 : Clinical Implementation of BrainLAB’s Element Planning System for Intracranial SRS Treatments of Arteriovenous

N. Shrestha, G. Narayanasamy, P. Sabouri, F. Kalantari, F. Xia, Z. Su, R. Panthi*

PO-GePV-T-407 : Differences Between AcurosXB and AAA On Collimator Angle in VMAT-SBRT for Lung Tumor
Y. Yamanaka*, K. Inoue, Y. Suetsugu, M. Tateishi, T. Hirose, J. Fukunaga, T. Yoshitake, T. Sasaki, K. Atsumi

PO-GePV-T-408 : Impact of Vertex Size in Lattice Spatially Fractionated Radiation Therapy for Pelvic Bulky Tumors
A. Magnoni, E. Donnelly, H. Zhang*

PO-GePV-T-409 : Single-Isocenter Multi-Target SRS VMAT Treatment Planning Strategy: When Targets Compete for Limited MLC Beam Apertures
J. Duan*, G. Cui, N. Walls, I. Wang, F. Yin

PO-GePV-T-410 : Python Scripting to Identify Target Grouping Optimizations for Multiple Metastasis Treatment Planning
D. Johnson*, Z. Xia,

PO-GePV-T-411 : A Comparative Dosimetric Study of Spine SABR Using Two MLC Delivery Systems with Pencil Beam and Monte Carlo Algorithms
J. Rahimian, J. Zhang*, J. Vinci

PO-GePV-T-412 : Lowering Modulation Factor in Lung SBRT Plans While Observing RTOG Constraints
A. Boria*, G. Narayanasamy, M. Bimali, D. Desai, F. Kalantari, P. Sabouri, Z. Su

PO-GePV-T-413 : Calculated Target Dose Differences for Brain Stereotactic Radiosurgery (SRS) Between Two Advanced Dose Algorithms
D. Zheng*, H. Jung, M. Milano, K. Usuki, S. Hardy, S. Tanny, J. Yoon

PO-GePV-T-414 : Utility of a Traditional CT Simulation in the Frameless Leksell Gamma Knife (LGK) Icon Workflow
S. Herchko, S. Yaddanapudi*

PO-GePV-T-415 : Comparisons of the Dose Calculation Algorithms and the Dosimetric Impact of Titanium Implants in Spinal SBRT Using Three Commercial Treatment Planning Systems
C. Liu*, A. Magnelli, Y. Cho, L. Angelov, E. Balagamwala, S. Chao, P. Xia

PO-GePV-T-416 : Validation and Implementation of a Dedicated Spine Stereotactic Radiosurgery Treatment Planning System
C. Knill*, R. Sandhu, B. Loughery, L. Lin, Z. Seymour, P. Chinnaiyan, T. Quinn, M. Almahariq, R. Deraniyagala

PO-GePV-T-417 : A 3D Superposition Approximation for Gamma Knife Dose Calculation
P. Stone*, R. Ramirez, D. Neck, C. Chu, J. Dey, D. Solis

PO-GePV-T-418 : Evaluation of Two Treatment Planning Systems for Single Isocenter Multiple Metastases Stereotactic Radiosurgery Treatment Planning and Delivery
W. Johansson, D. Opp, C. Tichacek, B. Libby*, G. Zhang, G. Redler, L. Nardella, S. Wasserman, D. Oliver, T. Robinson, H. Yu, J. Graham

PO-GePV-T-419 : A Deep Learning Dose Calculation Model for CyberKnife Circular Beams
H. Li*, F. Zhou, B. Liu, S. Xu, Q. Wu

PO-GePV-T-420 : Field Size Definition and Output Factors in Small Field Dosimetry
G. Ding*, I. Das

PO-GePV-T-421 : A Comparison of Primary and Secondary Dose Calculation Algorithms for Lung SBRT Targets
J. Pogue*, R. Popple, J. Stahl, R. Sullivan

PO-GePV-T-422 : Investigating Shot Within Shot Technique with a Rotating Gamma Machine
A. Eldib*, H. Liu, L. Chen, M. Abdelgawad, M. Sherif, C. Ma

PO-GePV-T-423 : Dosimetric Comparison Between Brainlab Elements Planning
system 1.5 and 3.0 with Jaw Tracking and Collimator Optimization for Intracranial
SRS Treatments

N. Shrestha, G. Narayanasamy, M. Bimali, P. Sabouri, F. Kalantari, Z. Su, R. Panthi*

PO-GePV-T-424 : Automated Review of MR-Guided Stereotactic Body Radiation Therapy Treatments Using MR-Linac Delivery Log Files
B. Hunt*, G. Gill, M. Rose, P. Schaner, G. Russo, B. Zaki, D. Gladstone, R. Zhang

PO-GePV-T-425 : Development of An Elekta VersaHD MLC-Based Trigeminal Neuralgia Program
N. Miksys*, C. Curley, R. Tokarz

PO-GePV-T-426 : Adaptive Workflow for Prostate, Seminal Vesicle, and Nodal Volume SBRT On a CBCT Adaptive AI Driven System
E. Laugeman*, A. Price, L. Henke, B. Baumann

PO-GePV-T-427 : Institutional Review On Evaluating 6-Degree of Freedom Treatment Couches for Disease-Specific SBRT
K. Lyons, D. Spratt, V. Colussi, R. Kashani*, C. Langmack

PO-GePV-T-428 : Dosimetric Comparison of Adaptive Breast SBRT On ETHOS Platform
K. McConnell*, C. Cardenas, J. Belliveau, H. Boggs, R. Popple, D. Stanley

PO-GePV-T-429 : Volume Staging for Arteriovenous Malformation SRS Treatment Using Volumetric Modulated Arc Therapy
C. Mendez*, E. Gete

PO-GePV-T-430 : Dosimetric Accuracy of 6DoF Robotics for SRS Motion Management
D. Holloman, A. Sakaamini*, X. Liu, S. Yoon, T. Li, R. Wiersma

PO-GePV-T-431 : Motion Dose Application (MoDoC) to Calculate Dosimetric Impact of Intra-Fraction Motion for SBRT Prostate Patients
L. Happersett, S. Burleson, M. Zelefsky, P. Zhang, P. Wang, L. Jacobs, A. Damato*,

PO-GePV-T-432 : Using Kilovoltage Triggered Imaging to Improve Intrafraction Motion Management for Free Breathing and Breath Hold Lung Stereotactic Body Radiation Therapy
M. Moazzezi*, P. Xia, K. Stephans, B. Guo

PO-GePV-T-433 : Comparison of the Dose Distribution to Organs at Risk for Right and Left Lung Tumors From SBRT Radiation Treatments Created for Trilogy and Radixact Treatment Machines
A. Kumari*, S. Klash

PO-GePV-T-434 : Development of a Program to Perform Automatic Shielding Evaluation Using Patient Data
D. Choi*, S. Ahn, D. Kim, S. Choi, Y. Jang, N. KWON, J. Seok, S. Park, W. Ahn, J. Kim

PO-GePV-T-435 : Quantification of Reactive Oxygen Species Using Polyvinyl Alcohol Coated Gold Nanoparticles
N. Charchi*, P. Nath, K. Xie, E. Parsai, A. Ray, D. Shvydka

PO-GePV-T-436 : Cell Morphometry for Advancing Nanoparticle-Mediated Radiotherapy Against Glioblastoma
E. Jank*, O. Salas, A. Benoit, Y. Walter, A. Hubbard, A. Ekpenyong

PO-GePV-T-437 : Nanoparticles Enhance Radiosensitivity and Improve Chemoradiotherapy for Brain Tumors
A. Hubbard*, O. Salas, E. Jank, A. Benoit, D. Jordan, Y. Walter, C. Thiegs, A. Ekpenyong

PO-GePV-T-438 : Characterization of a Novel Irradiation Method for Small Animal Radiotherapy Using a Monte Carlo Method
A. Entezam*, A. Fielding, D. Fontanarosa

PO-GePV-T-439 : Applying Optical Reporters of Radiation Damage to Ex Vivo Tissue Models
W. Thomas*, J. Sunnerberg, M. Reed, B. Pogue

PO-GePV-T-440 : Dosimetry Equivalence Between X-Ray and Gamma-Ray Irradiation with Validated Monte Carlo Simulations
J. Caravaca Rodriguez, R. Peter*, J. Camara Serrano, C. Nostrand, V. Steri, C. Gunther, Y. Seo, J. Yang

PO-GePV-T-441 : Effect of High-Dose-Rate Irradiation On Cell Survival:Simple Investigation of Cultured Cells
M. Kurimoto*, K. Yasui, T. Watanabe, H. Yanagi, Y. Saito, S. Ogawa, N. Hayashi, S. Hayashi

PO-GePV-T-442 : X-Ray Beam Characterization of the CellRad X-Ray Irradiator Using Plane-Parallel Ionization Chamber and X-Ray Beam Analyzer
J. Cabahug*, S. Tatu, B. Lo, C. Feliciano

PO-GePV-T-443 : Commissioning of a Commercial Orthovoltage Small-Animal and Cell Irradiator
J. Van Schelt*, K. Jones, B. David, Y. Liao, E. Blazek

PO-GePV-T-444 : Evaluation of Normal Tissue Response to Pulsed Low-Dose-Rate Radiotherapy (PLDR)
T. Dos Santos*, D. Cvetkovic, D. Yang, L. Chen, C. Ma

PO-GePV-T-445 : New Role of Therapy for Deceleration of Tumor Phenotype Progression
J. Joo*

PO-GePV-T-446 : A Simulation Study On the Radiation-Induced Immune-Response of Tumor After Radiosurgery Using An Improved Cellular Automata Model
D. Kawahara*, Y. Nagata, Y. Watanabe

PO-GePV-T-447 : Computational Modelling of Impedance Based Cell Migration for Improved Chemotherapy and Radiotherapy
M. Schwengler*, B. Ibironke, K. Lemke, A. Walther, A. Ekpenyong

PO-GePV-T-448 : The Use of the Normal Tissue Non-Complication Probability (NTCP0) in the Safety Evaluations as a New Alternative of Assessing the Side-Effects of the Radiation Oncology Treatments
T. Frometa-Castillo, A. Pyakuryal, G. Narayanasamy*, A. Mesbahi

PO-GePV-T-449 : Characterization of the Relative Biological Effectiveness of a Range of Photon Energies for Irradiation of HeLa and PC-3 Cell Lines
N. Chabaytah*, J. Babik, B. Behmand, R. Ruo, T. Connell, Y. Poirier, M. Evans, S. Abbasinejad Enger

PO-GePV-T-450 : High Resolution XACT Imaging for Precision Radiotherapy
K. Bjegovic, S. Wang, R. Liu, A. Liu*, T. Kim, L. Xiang

PO-GePV-T-451 : Non-Contact Detection of Radiation-Induced Acoustic Emissions
K. Kim, T. Kim, N. Katta, K. Duong, S. Bobba, T. Milner, L. Xiang*

PO-GePV-T-452 : Acute Breast Toxicity Evaluations with a Breast Ultrasound Scoring Scheme
J. Wang*, B. Zhou, X. Yang, J. Lin, K. Godette, S. Kahn, M. Torres, T. Liu

PO-GePV-T-467 : Real-Time Per-Voxel Constraints Can Efficiently and Effectively Minimize Hot Spots in Linear-Energy-Transfer-Guided Robust Optimization for Base-Of-Skull Patients in IMPT
H. Feng*, J. Shan, J. Anderson, W. Wong, S. Schild, R. Foote, C. Patrick, K. Tinnon, M. Fatyga, M. Bues, S. Patel, W. Liu