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| MO-C930-GePD-F3-4 | Verification of the MRI-Linac Beam Alignment JWH Wolthaus*, JJ Bluemink , SJ Woodings , JHW Vries , TL van Soest , JGM Kok , HM van Zijp , SS Hackett , B van Asselen , BW Raaymakers , University Medical Center Utrecht, Utrecht, The Netherlands |
| MO-E115-GePD-F7-4 | Initial Evaluation of the Clinical Reliability of a New Treatment Delivery System Design JDP Hoisak*, G Kim , K Moore , T Pawlicki , UC San Diego, La Jolla, CA |
| SU-F-209-4 | The Dosimetric Effect of Motion Management System Latency On Radiotherapy Treatments A Shepard*, C Matrosic , J Radtke , W Culberson , B Bednarz , University of Wisconsin-Madison, Madison, WI |
| SU-H430-GePD-F4-1 | A New Methodology of Evaluation of Respiratory Motion Tracking Errors of CyberKnife Using a 2D Detector Array B Yang*, T Chiu , M Law , K Tang , H GENG , W Lam , K Cheung , S Yu , Hong Kong Sanatorium & Hospital, Hong Kong, Hong Kong |
| SU-I-GPD-P-24 | Monitoring Electron Beam Energy Constancy Using a 2D Ionization Chamber Array with Double-Wedge Phantom S Gao*, M Chetvertkov , P Balter , M.D. Anderson Caner Center, Houston, TX |
| SU-I-GPD-P-51 | Development of Measurement Technique to Determine Beam Quality Conversion Factor for High-Energy Electron Beams K Hirayama1,2*, T Saitou1,2, M Shimizu2, Y Morishita2, S Seno3, N Kinoshita4, H Oguchi3, M Hoshina1 (1) Komazawa Univ., Setagaya-ku, Tokyo (2) National Metrology INstitute of Japan, AIST, Tsukuba-shi, Ibaraki (3) Nagoya Univ., Nagoya-shi, Aichi (4) University of Fukui hospital, Yoshida-gun, Fukui |
| SU-I-GPD-T-302 | External Photon Beam Dosimetry for Linac QA Using Gafchromic EBT3 Film I Khan1 , B Tahir1 , M Rafique1 , T Iqbal1 , S Zulfiqar1,2 , A Zahoor1,2 , J Rehman3 , K Iqbal2 , J Chow4*, (1) University of Gujarat, Gujrat, Pakistan, (2) SKMH&RC, Lahore, Pakistan, (3) BUITEMS, Quetta, Pakistan, (4) Princess Margaret Cancer Centre, Toronto, ON |
| SU-I-GPD-T-304 | Dosimetric and Mechanical Validation of a Varian Halcyon Linear Accelerator T Jarema*, T Aland , A Walsh , R Murry , Radiation Oncology Centres, Toowoomba, QLD |
| SU-I-GPD-T-306 | Inactivation of the Transverse Beam Steering Servo System and the Effect of Linac's Operating Dose Rates On X-Ray Beam's Center and Profile Characteristics E Sham*, B Kassahun, Gibson Cancer Center (Duke Cancer Network), Lumberton, NC |
| SU-I-GPD-T-318 | Routine Jaw Positioning QA for Analyzing Photon Junctions Using Half Beam Block Matching K Harpool1,2*, S Crawford1,2 , W Snyder1,2 , P Schantz1,2 , J Dick1,2 , J Wei1,2 (1) Cancer Treatment Centers of America, Newnan, GA, (2) Landauer Medical Physics, LLC, Glenwood, IL |
| SU-I-GPD-T-319 | Sensitivity Testing of Quality Assurance (QA) Tasks in Sun Nuclear Corporation (SNC) Machine - A Fully Automated TG-142 QA Solution G Martin*, A Willet , M Gilmore , L Howard , S Elmer , R Clements , R Biggar , C Rowbottom , The Clatterbridge Cancer Centre, Birkenhead, Wirral, UK |
| SU-I-GPD-T-323 | When a Good Monitor Chamber Goes Bad: Diagnosing Atmospheric Communication of a Sealed Monitor Chamber T McCaw*, B Barraclough , M Belanger , A Besemer , D Dunkerley , Z Labby , University of Wisconsin, Madison, WI |
| SU-I-GPD-T-329 | Photon Beam Quality Assurance with the Integral Quality Monitor System: A Multicenter Study A Veres1*, M Farrokhish2 , J DeMarco3 , L Fong de los Santos1 , R Heaton2 , M Islam2 , (1) Mayo Clinic, Rochester, MN, (2) Princess Margaret Cancer Centre, Toronto, Ontario, (3) Cedars-Sinai Medical Center, Los Angeles, CA, |
| SU-I-GPD-T-330 | A Simplified Commissioning Procedure for the Halcyon Linear Accelerator S AM Lloyd*, T Lim , X Fave , E Flores-Martinez , V Moiseenko , K L Moore , T F Atwood , UC San Diego, La Jolla, CA |
| SU-I-GPD-T-332 | Digital Electrometer Response in a Pulsed-Beam Linear Accelerator Environment L Turner*, J Radtke , J Micka , W Culberson , university of Wisc Madison, Madison, WI |
| SU-L-DBRA-5 | Hazard Analysis of the Halcyon Linac and Treatment Planning System T Pawlicki*, G Kim, UC San Diego, La Jolla, CA |
| TH-AB-DBRA-5 | Effects of Gantry Speed, Breathing Rate, and Duty Cycle On Treatment Efficiency for Respiratory-Gated VMAT E Hubley1*, G Pierce2 , A Hudson3 , C Bojechko4 , (1) Thomas Jefferson university Hospital, Philadelphia, PA, (2) Tom Baker Cancer Centre, Calgary, AB, (3) Tom Baker Cancer Centre, Calgary, AB, (4) University of California San Diego, La Jolla, CA |
| TH-AB-DBRA-8 | Linac Triggering Latency Quantification for Consideration in Intra-Fraction Motion Management Systems A Shepard*, C Matrosic , S Jupitz , J Radtke , W Culberson , B Bednarz , University of Wisconsin-Madison, Madison, WI |
| TH-AB-KDBRA1-5 | A Practical Device and Procedure for Measuring Vertical and Horizontal Treatment Couch Walkout Under Rotation I Brezovich*, E Covington , X Wu , R Popple , S Shen , R Cardan , B Guthrie , J Fiveash , M Bredel , university Alabama Birmingham, Birmingham, AL |
| TH-AB-KDBRA1-8 | Performance of a Doubly-Focused Double-Stack Multi-Leaf Collimator (MLC) System On a MR Guided Linear Accelerator B Cai*, J Cammin , A Price , D Yang , J Park , V Rodriguez , S Mutic , O Green , Washington University in St Louis, St Louis, MO |
| TH-CD-DBRA-3 | Direct Measurement of the Energy Spectrum of 6 MV Linear Accelerator S Taneja*, L Bartol , W Culberson , L DeWerd , University of Wisconsin-Madison, Madison, WI |
| TH-EF-KDBRA1-2 | An Investigation of Patient Plan-Specific Correction Factors for Three Ion Chambers in Collapsed Composite IMRT Treatments Using a PTW MicroDiamond and Monte Carlo Simulations V Desai*, Z Labby , W Culberson , university of Wisc Madison, Madison, WI |
| TU-C1030-GePD-F4-4 | Initial Investigation of the SX1 Dual-Layer Multileaf Collimator Tongue-And-Groove Effect TY Lim*, E Flores-Martinez , X Fave , S AM Lloyd , I Dragojevic , D Hoffman , T Atwood , K L Moore , G Kim , UC San Diego, La Jolla, CA |
| TU-C930-GePD-F9-3 | Multiple Clinical Implementations of Real-Time 3D IGRT On Standard-Equipped Cancer Radiotherapy Systems: The Tipping Point for the Era of Real-Time Radiotherapy? P Keall1*, D Nguyen1 , R O'Brien1 , P Zhang2 , L Happersett2 , J Bertholet3 , P Poulsen4 , (1) University of Sydney, Camperdown, NSW, (2) Memorial Sloan-Kettering Cancer Center, New York, NY, (3) Institute of Cancer Research and Royal Marsden NHS Foundation, London, (4) Aarhus University Hospital, Aarhus |
| TU-E115-GePD-F7-1 | Commissioning of a Pre-Configured Fast-Rotating O-Ring Gantry Linac System and IMRT/VMAT Treatment Delivery Quality R De Roover1*, K Poels2 , W Crijns2 , A Nulens2 , B Vanstraelen2 , K Haustermans1,2 , T Depuydt1,2 , (1) KU Leuven - University of Leuven, Department of Oncology, B-3000 Leuven, Belgium, (2) University Hospitals Leuven, Department of Radiation Oncology, B-3000 Leuven, Belgium |
| TU-I345-GePD-F3-2 | Feasibility Study of the Image-Based Automatic QA for the Halcyon G Kim1*, J Rah2 , T Lim1 , E Flores-Martinez1 , T Pawlicki1 , (1) University of California, San Diego, La Jolla, CA, (2) Myungji Hospital, Goyang-si, Gyeonggi-do, Republic of Korea |
| WE-C930-GePD-F4-5 | Improved Dose Estimation of X-Ray From LINAC Using An Optical Method S Yamamoto1*, K Okudaira2 , (1) Nagoya University Graduate School of Medicine, Nagoya, ,(2) Nagoya University Hospital, Nagoya, Aichi |
| WE-C930-GePD-F9-5 | Characterizing Isocenter Reproducibility for Linac-Based Stereotactic Treatment Accuracy D Pinkham1*, S Hancock2 , (1) Yale New Haven Hospital, New Haven, CT, (2) Southeast Missouri Hospital, Cape Girardeau, MO |
| WE-FG-KDBRA1-9 | The Accuracy of Ion Chamber Calibration Coefficients Measured in a Cobalt-60 Reference Field Is Equivalent to Those From Accelerator Beams B R Muir*, M R McEwen, National Research Council, Ottawa, ON |
| WE-FG-KDBRB1-6 | BEST IN PHYSICS (JOINT IMAGING-THERAPY): On Axis and X-Band Linac Designs Enable Improved Passive Magnetic Shielding in MRI-Linac Systems B Whelan*, P Keall , University of Sydney, Camperdown, NSW |
| WE-FG-KDBRB1-8 | Deep Learning for Head and Neck Segmentation in MR: A Tool for the MR-Guided Radiotherapy B Anderson*, B Elgohari , C Cardenas , A Mohamed , P Yang , C Fuller , C Chung , K Brock , UT MD Anderson Cancer Center, Houston, TX |