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Taxonomy: TH- External Beam- Photons: portal dosimetry, in-vivo dosimetry and dose reconstruction

BReP-SNAP-T-59	Estimating the Dosimetric Impact of Patient Anatomy Changes with In-Vivo EPID Images, Using the Gradient Dose Segmented Analysis Technique J Steers, J Zavala Bojorquez, C Bojechko*, University of California San Diego, La Jolla, CA
BReP-SNAP-T-87	Influence of the Magnetic Field On the Cherenkov Light Collected by Optical Fiber Dosimeters B Maraghechi1*, Y Hao1, R Zhang2, H Li1, S Mutic1, A Darafsheh1, (1) Washington University School of Medicine, St. Louis, MO, (2) Dartmouth College, Lebanon, NH
PO-GeP-M-430	VMAT Case Study for Patient Specific Virtual Compensator Algorithm EPID In-Vivo Dosimetry J Barbiere*, R Teboh Forbang, A Ndlovu, Hackensack Univ Medical Center, Hackensack, NJ
PO-GeP-P-85	Analysis of Portal Dosimetry Patient-Specific Quality Assurance Results of 1203 Patients Treated with Varian Halcyon 1.0 Accelerator Z Wang*, B Yang, L Yu, T Pang,B Wang, F Zhang, J Qiu, Peking Union Medical College Hospital, Beijing, CN
PO-GeP-T-266	Detectability of MLC Stop Position Error During Treatment by Gantry-Mounted Transmission Detector H Honda1,2*, M Tominaga3,M Sasaki4,Y Uto5,M Oita6, Y Hamamoto7,T Mochizuki8,T Kido9,Y Ishii10,R Yamamoto11,K Omoto12 (1) Department of Radiological Technology, Ehime University Hospital, Ehime, JP, (2) Graduate School of Advanced Technology and Science, Tokushima University, Jp, (3) Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, JP, (4) Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, JP, (5) Institute of Bioscience and Bioindustry, Tokushima University, Tokushima, Jp, (6) Okayama University Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama, JP, (7)Department of Radiological Technology, Ehime University Hospital, Ehime, JP,(8) Department of Radiological Technology, Ehime University Hospital, Ehime.JP,(9) Department of Radiology, Ehime University Graduate School of Medicine, Ehime, JP, (10) Department of Radiological Technology, Ehime University Hospital, Ehime, JP, (11) Department of Radiological Technology, Ehime University Hospital, Ehime, JP, (12) Department of Radiological Technology, Ehime University Hospital, Ehime, JP,
PO-GeP-T-426	Evaluation of Tumor Volume Change Using Transit Dosimetry in Lung Radiotherapy X Shen*, S Hsu, D Mynampati, P Brodin, A Basavatia, N Ohri, W Bodner, W A Tome, Montefiore Medical Center, Bronx, NY
PO-GeP-T-534	Investigating the Impact of Inter-Fractional Variations to the Delivered Dose to Esophagus During VMAT for Lung Cancer Using CBCT-Based Deformable Image Registration P Mavroidis1*, C Trustram Eve1, A Walters1, A Weiner1, S Stathakis2, J Hammers1, S Das1, K Wang1, (1) Univ North Carolina, Chapel Hill, NC, (2) Mays Cancer Center - MD Anderson Cancer Center, San Antonio, TX
PO-GeP-T-616	Optimization of Electronic Portal Imaging Devices (EPIDs) for Small VMAT Fields M Koo1*, J Darko2, E Osei3, (1) Ryerson University, Toronto, ON, CA, (2) Grand River Hospital, Kitchener, ON, CA, (3) Grand River Regional Cancer Centre,
PO-GeP-T-640	Physical Characteristics of Annihilation and Related Background Photons Produced in X-Ray Irradiation with Medical Linear Accelerator K Takahashi*1, T Hanada2, H Miyauchi1,4, Y Tanaka1, M Hashimoto3, T Hasegawa3, (1)Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan, (2)Department of Radiology, Keio University School of Medicine, Tokyo, Japan, (3) Faculty of Allied Health Sciences, Kitasato University, Kanagawa, Japan, (4)Cancer Institute Hospital of JFCR, Tokyo, Japan
PO-GeP-T-643	Portal Dosimetry Comparison for Three Beam-Matched Varian TrueBeam LINACs K Yang1*, W Jiang2, R Patel2,1, S Sharma1, A Ju1, (1) East Carolina University, Greenville, NC, (2) 21st Century Oncology, Greenville, NC
PO-GeP-T-646	Pre-Clinical and Clinical Evaluation of the HYPERSCINT Scintillation Dosimetry Research Platform I Schoepper1, E Trestrail2*, S Dieterich3, M Kent4, (1) WR Pritchard Veterinary Medical Teaching Hospital, UC Davis School of Veterinary Medicine, UC Davis School Of Veterinary Medicine, (2) Pacific Crest Medical Physics ,Chico, CA, (3) UC Davis Medical Center, Sacramento, CA, (4) Surgical and Radiological Sciences, UC Davis School of Veterinary Medicine, Davis, CA,
PO-GeP-T-678	Quantifying Patient Shifts Using In Vivo EPID Images J Zavala Bojorquez*, C Bojechko, University of California San Diego, La Jolla, CA
PO-GeP-T-829	Using In-Vivo EPID Measurements to Detect Deviations and Track Trends in Machine Performance Per Treatment Day C Bojechko*, J Zavala Bojorquez, University of California San Diego, La Jolla, CA
PO-GeP-T-844	Validation of OSLD In-Vivo Dosimetry for Total Body Irradiation E Draeger, Z Chen, X Tang*, Yale University School of Medicine, New Haven, CT
SU-F-TRACK 3-1	Development of Tri-Hybrid Method to Estimate Patient Scattered Fluence Into the EPID K Guo1,2*, B McCurdy1,2, (1) University of Manitoba, Winnipeg, MB, CA, (2) CancerCare Manitoba, Winnipeg, MB, CA