High Dose Ratio Portal Imaging using Electron Beam of Linear Accelerator

• Project/Area Number: 22791213
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Radiation science
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: MYOJOYAMA Atsushi 首都大学東京, 大学院・人間健康科学研究科放射線科学域, 助教 (90347279)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: ポータルイメージング / 電子線 / モンテカルロ法 / 画像取得システム / GPGPU

Research Abstract

The description of low density material reconstructed by mega voltage image doesn' t reach kilo voltage one because the flattening filter of linear accelerator causes beam hardening and an increase of scattered photon. To solve this problem reasonable, we designed a new portal device used the electron beam mode of linear accelerator. This device is attached on the shadow tray of the accelerator, has a target consist of low atomic number material, and outputs bremsstrahlung X-ray by electron beam.

Research Products

• [Journal Article] Depth Scaling of Solid Phantom for Intensity Modulated Radiotherapy Beams (2010)
  • Author(s): Y.Fujita, N.Tohyama, A.Myojoyama, H.Saitoh
  • Journal Title: Journal of Radiation Research Volume: Vol.51, No.6 Pages: 707-713
  • NAID: 10026964171
  • Peer Reviewed
• [Presentation] 直線加速装置の電子線モードによるEPID画像取得法 (2012)
  • Author(s): 明上山温,齋藤秀敏
  • Organizer: 医学物理
  • Year and Date: 2012-04-01
• [Presentation] Improvement of Tumor shape for 4DCT Images (2011)
  • Author(s): Shuhei Noguchi, Satoshi Kitou, Makio Onodera, Katsuyuki Karasawa, Atsushi Myojoyama and Hidetoshi Saitoh
  • Organizer: The 11th Asia-Oceania Congress of Medical Physics(11th AOCMP), CD-ROM 4 pages
  • Year and Date: 2011-10-01
• [Presentation] Development of Attachable Portal Imaging Device using Electron Beam of Linear Accelerator (2011)
  • Author(s): Atsushi Myojoyama and Hidetoshi Saitoh
  • Organizer: 23rd European Congress of Radiology(ECR2011), EPOS
• [Presentation] Improvement of Tumor shape for 4DCT Images (2011)
  • Author(s): Shuhei Noguchi
  • Organizer: The 11th Asia-Oceania Congress of Medical Physics (11th AOCMP)
  • Place of Presentation: Fukuoka, Japan
• [Presentation] Uncertainty of beam quality correction factor for clinical IMRT beam (2011)
  • Author(s): Toru Kawachi
  • Organizer: The 11th Asia-Oceania Congress of Medical Physics (11th AOCMP)
  • Place of Presentation: Fukuoka, Japan
• [Presentation] Development of Attachable Portal Imaging Device using Electron Beam of Linear Accelerator (2011)
  • Author(s): Atsushi Myojoyama
  • Organizer: 23^<rd> European Congress of Radiology (ECR2011)
  • Place of Presentation: Wien (Austria)
• [Presentation] Fundamental Study for 3-Dimensional Dose Verification from Compton Scattered Photons Using EGS Simulation (2010)
  • Author(s): T. Kodama, A. Myojoyama, H. Saitoh
  • Organizer: KEK Proceedings 2010-9
  • Year and Date: 2010-08-03
• [Presentation] MV-CBCTのハードウェアによる高速再構成 (2010)
  • Author(s): 明上山温,齋藤秀敏
  • Organizer: Japanese Journal of Medical Physics
  • Year and Date: 2010-04-11
• [Presentation] Fast Monte Carlo Dose Calculation using GPGPU (2010)
  • Author(s): Atsushi Myojoyama and Hidetoshi Saitoh
  • Organizer: SNA+MC2010
• [Presentation] GPU-Based Monte Carlo Calculation (2010)
  • Author(s): Atsushi Myojoyama and Hidetoshi Saitoh
  • Organizer: the 10th Asia-Oceania Congress of Medical Physics(10th AOCMP)
• [Presentation] 電子線による高画質EPIDのシミュレーション (2010)
  • Author(s): 明上山温,齋藤秀敏
  • Organizer: Japanese Journal of Medical Physics
• [Presentation] Fast Monte Carlo Dose Calculation using GPGPU (2010)
  • Author(s): Atsushi Myojoyama
  • Organizer: The Joint International Conference of the 7th Supercomputing in Nuclear Application and the 3rd Monte Carlo
  • Place of Presentation: Tokyo (Japan)
• [Presentation] GPU-Based Monte Carlo Calculation (2010)
  • Author(s): Atsushi Myojoyama
  • Organizer: The 10th Asia-Oceania Congress of Medical Physics (10th AOCMP)
  • Place of Presentation: Taipei (Taiwan)
• [Presentation] 電子線による高画質EPIDのシミュレーション (2010)
  • Author(s): 明上山温, 齋藤秀敏
  • Organizer: 日本医学物理学会第100回学術大会
  • Place of Presentation: 東京(日本)