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Taxonomy: TH- External Beam- Photons: Quality Assurance - IMRT/VMAT

MO-IePD-TRACK 6-7Evaluation of a New High-Resolution Digital Detector Array for SRS and SBRT Quality Assurance
A Rusnak1*, C Collins2, Z Saleh1,2, G Cardarelli1,2, E Klein1,2 and Y Yang1,2, (1) Brown University, Providence, RI, (2) Rhode Island Hospital, Providence, RI
PO-GePV-M-212Prediction of Dose Discrepancies Using Differences in Plan Normalization Values of Head-And-Neck VMAT Plans
M Sasaki1*, H Ikushima2, S Kobuchi3, K Kuwahara4, A Kajino5, D Sato6, W Sugimoto7, M Oita8, (1) Department of Therapeutic Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima,JP (2) Department of Therapeutic Radiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, JP (3)Graduate School of Health Sciences, Tokushima University, Tokushima, JP (4)Graduate School of Health Sciences, Tokushima University, Tokushima, JP (5)Graduate School of Health Sciences, Tokushima University, Tokushima, JP (6)Graduate School of Health Sciences, Tokushima University, Tokushima, JP (7)Department of Radiological Technology, Tokushima Prefectural Central Hospital, Tokushima, JP (8) Okayama University Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama, JP
PO-GePV-T-150Development of An In-House Off Axis Mechanical Isocentricity Test
J Seekamp*, D Pearson, University of Toledo, Toledo, OH
PO-GePV-T-153Towards Implementation of a Knowledge-Based Decision Support System for Treatment Plan Auditing Through Automation
S Liu1*, K Ohri2, J Bertini3, S Berry4, D Yang5, C Della-Biancia6, (1) Memorial Sloan Kettering Cancer Center, New York, NY, (2) Memorial Sloan-Kettering Cancer Center, New York, NY, (3) University of Chicago, Chicago, IL, (4) Memorial Sloan Kettering Cancer Center, New York, NY, (5) Washington University in St Louis, St Louis, MO, (6) Memorial Sloan Kettering Cancer Center, New York, NY
PO-GePV-T-165The 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, Fox Chase Cancer Center, Philadelphia, PA
PO-GePV-T-166Variability of Control Limits for Mean Percent Dose Differences Across Different Anatomical Contours
H Mehrens*, R Douglas, M Gronberg, K Nealon, L Zhang, L Court, University of Texas MD Anderson Cancer Center, Houston, TX
PO-GePV-T-178An Improved Statistical Model for Gamma Index Pass Rates in Intensity Modulated Radiation Therapy Patient-Specific Quality Assurance
P. James Jensen*, William Donahue, Zhe Chen, Yale University School of Medicine, New Haven, CT
PO-GePV-T-182Clinical 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, Medical University of South Carolina, Charleston, SC
PO-GePV-T-184Development 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 K Fix, P Manser, S Mueller, Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital and University Of Bern, Bern, CH
PO-GePV-T-185Stereotactic 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, Texas Oncology - Houston, TX
PO-GePV-T-188A Convolutional neural Network Model for Predicting Gamma Passing Rate of 3D Array Detector-Based VMAT QA
T Matsuura1,2*, D Kawahara2, A Saito3, E Shiba4, K Yamada1, S Ozawa1,2, Y Nagata1,2, (1) Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, Japan, (2) Hiroshima University, Hiroshima, Japan, (3) Hiroshima University Hospital, Hiroshima, Japan, (4) Department of Radiation Oncology, Hospital of the University of Occupational and Environmental Health, Fukuoka, Japan
PO-GePV-T-189Machine- and Site-Specific Analyses of TomoTherapy Patient-Specific QA Results Planned with Accuray Planning Station and RaySearch RayStation
P Hill* and RA Bayliss, University of Wisconsin, Madison, WI, USA
PO-GePV-T-191Utilization of a Plan Quality Prediction Software to Investigate Patient Specific QA Passing Rates
P Irmen1*, C Stambaugh2, C Melhus2, (1) Inova Health System, Fairfax, VA, (2) Tufts Medical Center, Boston, MA
PO-GePV-T-192Design of a Respiratory Motion Quality Assurance System with Portal Dosimetry and Customizable Tumor Phantom
H Tan*, L Tan, C Koh, K Ang, S Park, National Cancer Centre Singapore, Singapore, 01
PO-GePV-T-274Interpolation of Dose Planes for Use in the Optimization of Multi-Leaf Collimator Dosimetric Leaf Gap and Transmission
Dominic J. DiCostanzo* and Ahmet S. Ayan, The Ohio State University, Columbus, OH
PO-GePV-T-316Modulation 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, Johns Hopkins University, Baltimore, MD
PO-GePV-T-366Evaluation of Parameters Affecting Gamma Passing Rate in Patient-Specific QA’s for Multiple Brain Lesions IMRS Treatments
E Salari*, D Shvydka, E Parsai, University of Toledo Medical Center, Toledo, OH
PO-GePV-T-386The Influence of Iso-Center Location, Beam Type and Lesion Size On Plan Specific QA in Lung SBRT
Shahram Mashouf, PhD*, Anderson Bauer, MD and Sugata Tripathi, PhD, Marshfield Clinic Health System, Marshfield, WI
PO-GePV-T-422Characterization of Single-Dose Radiotherapy (SDRT) Performance in a New High-Speed Ring Gantry-Based LINAC System
OM Oderinde1*, S Khan1, A Da Silva1, S Tian2, X Yang2, K Higgins2, SM Shirvani1, G Kuduvalli1, (1) RefleXion Medical, Hayward, CA,(2) Emory University, Atlanta, GA
TH-F-TRACK 3-3New Dosimetric Standard for Radiotherapy: Bounded Dose Volumetric Histogram Derived From Gamma Criteria
P Olcott*, Y Voronenko, A Da Silva, OM Oderinde, RefleXion Medical, Hayward, CA
WE-C-TRACK 3-4Monte Carlo Dose Calculations for Patient-Specific QA Based On Machine Log Files
H Parenica1*, C Kabat1, P Papaconstadopoulos2, N Kirby1, P Myers1, T Wagner1, N Papanikolaou1, S Stathakis1, (1) UT Health San Antonio MD Anderson Cancer Center, San Antonio, Texas, (2) The Netherlands Cancer Institute, Amsterdam, Netherlands
WE-C-TRACK 3-6Predicting Ion Chamber Disagreements for Patient-Specific Quality Assurance of VMAT Plans Using Machine Learning
P Wall*, M Lafreniere, E Hirata, O Morin, G Valdes, A Witztum, University of California San Francisco, San Francisco, CA
WE-C-TRACK 3-7Sensitivity Evaluation of Patient Specific Quality Assurance - Independent Assessment of Quality
J Lehmann1,2,3*, M Hussein4, S Siva5, A Moore3,6, T Standen1, B Subramanian7, P Greer1,3, CH Clark4,8,9, (1) Calvary Mater Newcastle Hospital, Newcastle, AU (2) University of Sydney, Sydney, AU (3) University of Newcastle, Newcastle, AU (4) National Physical Laboratory, Teddington, UK (5) Peter MacCallum Cancer Centre, Melbourne, AU (6) TROG Cancer Research, Newcastle, AU (7) GenesisCare, Bundoora, AU (8) University College London Hospital, London, UK (9) National Radiotherapy Trials Quality Assurance Group, London, UK
WE-IePD-TRACK 6-3Gradient-Dose Segmented Analysis (GDSA): An Improved Method for IMRT QA Analysis Compared to the Gamma Analysis
J Steers*, B Fraass, Cedars-Sinai Medical Center, Los Angeles, CA