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Taxonomy: TH- External Beam- Photons: treatment planning/virtual clinical studies

MO-IePD-TRACK 6-7	Effective Organs-At-Risk Dose Sparing in Volumetric Modulated Arc Therapy Using a Half-Beam Technique in Whole Pelvic Irradiation H Park1*, J Park2,3, M Artz2,3, Y Zhang2,3, J Ricci4, H Jang5, S Huh2,3, (1) Ajou University School of Medicine, Suwon, South Korea, (2) University of Florida College of Medicine, Gainesville, FL, (3) University of Florida Health Proton Therapy Institute, Jacksonville, FL, (4) Orlando Health UF Health Cancer Center, Orlando, FL, (5) Dongguk University College Of Medicine, Gyeongju, South Korea
PO-GePV-T-202	Monitor Unit Efficient VMAT Treatment Planning Facilitated by the MU Objective Tool M Ashenafi*, M Hare, C Rothfuss, H Zhang, University of Rochester, Rochester, NY
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, The University of Texas Southwestern Medical Ctr, Dallas, TX
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, University of Rochester, Rochester, NY
PO-GePV-T-233	Dosimetric Comparison of VMAT Prostate Plans Designed with 10MV Vs 18MV Photon Beams D Shvydka1, M Hajduk2*, (1) University of Toledo Health Science Campus, Toledo, OH, (2) ,University of Toledo Health Science Campus, Toledo, OH,
PO-GePV-T-239	API Driven Plan Scorecard Designer for the Evaluation of External Beam Planning Quality M Schmidt1,3*, M Folkerts2, C Abraham1, B Baumann1, N Knutson1, F Reynoso1, E Pryser1, E Sajo3, P Zygmanski4, M Jandel3, A Magliari2, (1) Washington University School of Medicine in St. Louis, Saint Louis, MO, (2) Varian Medical Systems, Palo Alto, CA (3) University of Massachusetts Lowell, Lowell, MA, (4) Brigham & Women's Hospital, Boston, MA
PO-GePV-T-242	A Comparison of Modulated Planning Techniques for Whole Brain Hippocampal-Avoidance Radiotherapy E Viviers*, P Johnson, University of Florida Health Proton Therapy Institute, Jacksonville, FL
PO-GePV-T-248	Dosimetric Study for Spine SRT Plans with Carbon Fiber Stabilization Devices H Lee*, J D. Palmer, A S. Ayan, Ohio State Univ, Columbus, OH
PO-GePV-T-251	Conformal Radiotherapy with Sequential Boost Versus Intensity-Modulated Radiation Therapy with a Simultaneously Integrated Boost G Komisopoulos1*, M Tolia2, A Siountas1, S Stathakis3, N Papanikolaou3, P Mavroidis4, (1) Laboratory Of Medical Physics, School Of Medicine, Aristotle University Of Thessaloniki, Greece, (2) Department Of Radiation Therapy, University Of Crete, Herakleion, Greece,(3) UT Health San Antonio MD Anderson Cancer Center, San Antonio, Texas, (4) UT Health San Antonio MD Anderson Cancer Center, San Antonio, Texas, (6) University of North Carolina, Chapel Hill, NC
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 Enomoto1,3*, Y Fujita2, S Matsumoto1, T Ebara4, A Tonari4, Y Maruyama1, A Nakanishi1 (1) Department of Radiology, Kyorin University Hospital, JP (2) Komazawa University, JP (3) Radiological Sciences, Graduate Division of Health Sciences, Komazawa University, JP (4) Department of Radiation Oncology, Kyorin University Hospital, JP
PO-GePV-T-260	Patient Treatment Transferability Between Unmatched Medical Linacs J Foy*, S Kucuker Dogan, I Das, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL
PO-GePV-T-268	Evaluation of Initial Planning Techniques in Ethos for Adaptive Head and Neck Patients N Nasser1,2*, J Caudell2, E Moros2, V Feygelman2, G Redler2, (1) University of South Florida, Tampa, FL, (2) H. Lee Moffitt Cancer Center, Tampa, FL
PO-GePV-T-276	Determining the Optimal Assigned Density for Various High-Density Prostheses Calculated with AcurosXB and AAA H Genco*, S de Boer, Roswell Park Comprehensive Cancer Center, Buffalo, NY
PO-GePV-T-317	The Impact of Flattening Filter Free On Remaining Volume at Risk in Lung Cases for VMAT and IMRT Techniques M Alfishawy1*, (1) International Medical Center, Cairo, EG
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, Rhode Island Hospital / Warren Alpert Medical, Providence, RI
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, University of Mississippi Med. Center, Jackson, MS
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, Henry Ford Health System, Detroit, MI
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, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, China, BeijingCN,
WE-IePD-TRACK 5-2	3D Dosimetry of Lung and Cardiac Shielding for Total Body Irradiation M Glenn*, K Wallner, S Luk, M Phillips, Y Tseng, R Ermoian, M Kim, University of Washington, Seattle, WA
WE-IePD-TRACK 5-3	Robust Optimization with Multiple-CT Sets to Account for Deep Inspiration Breath Hold Variation in Pancreatic Stereotactic Body Radiotherapy D Miles*, C Hill, A Narang, H Li, S Han-Oh, Johns Hopkins Medicine, Baltimore, MD
WE-IePD-TRACK 5-4	Sensitivity of IMRT and VMAT Dose Calculation to Changes in MLC Parameters S Gardner*, S Wang, K Snyder, C Smith, B Miller, I Chetty, Department of Radiation Oncology, Henry Ford Cancer Institute, Henry Ford Health System, Detroit, MI