Development of web-based CT system for dose computational dosimetry using Japanese voxel phantoms

• Project/Area Number: 20591484
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Radiation science
• Research Institution: Oita University of Nursing and Health Sciences
• Principal Investigator: KAI Michiaki Oita University of Nursing and Health Sciences, 看護学部, 教授 (10185697)
• Co-Investigator(Kenkyū-buntansha): ENDO Akira 日本原子力研究開発機構, 研究員 (10354705) ; TAKAHASHI Fumiaki 日本原子力研究開発機構, 研究員 (20354706) ; SATO Kaoru 日本原子力研究開発機構, 研究員 (80354702) ; BAN Nobuhiko 大分県立看護科学大学, 看護学部, 准教授 (70251220)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: CT診断 / 線量評価 / ボクセルファントム / 臓器線量 / モンテカルロ

Research Abstract

A web-based dose computation system, WAZA-ARI was developed to calculate organ doses to a patient in a computed tomography examination. The organ dose were derived by the Monte Carlo simulation using the Particle and Heavy Ion Transport code system, combined with Japanese voxel phantom. Real time calculation can be obtained using the WAZA-ARI over the Internet. Users choose scanning options and input parameters via a web browser. Organ doses are finally computed based on the radiographic exposure (mAs) and the pitch factor. The dose can be also estimated for Automatic Exposure Control (AEC) changing attenuation along the patient's length.

Research Products

• [Journal Article] Analysis of organ doses from Computed Tomography (CT) examination by the radiation transport calculation to develop the dosimetry system, WAZA-ARI (2011)
  • Author(s): Takahashi F, Endo A, Sato K, T. Hasegawa, Katsunuma Y, Ono K, Yoshitake T, Ban N, Kai M
  • Journal Title: Prog.in Nucl.Sci.Technol. 1 Pages: 517-517
• [Journal Article] WAZA-ARI : Computational dosimetry system for x-ray CT examinations : II. Development of web-based system. The Third Asia and Oceanic Congress on Radiation Protection. Tokyo, May 2010. (2011)
  • Author(s): Ban N, Takahashi F, Ono K, Hasegawa T, Yoshitake T, Katsunuma Y, Sato K, Endo A, Kai M.
  • Journal Title: Radiat Prot Dosimetry. (Epub ahead of print)
• [Journal Article] WAZA-ARI : Computational dosimetry system for X-ray CT examinations. I. Radiation transport calculation for organ and tissue doses evaluation using JM phantom (2011)
  • Author(s): F.Takahashi, et al.
  • Journal Title: Radiation Protection Dosimetry Volume: (In press)
  • Peer Reviewed
• [Journal Article] WAZA-ARI : Computational dosimetry system for X-ray CT examinations. II. Development of Web based system (2011)
  • Author(s): N.Ban, et al.
  • Journal Title: Radiation Protection Dosimetry Volume: (In press)
  • Peer Reviewed
• [Journal Article] Analysis of organ doses from Computed Tomography (CT) examination by the radiation transport calculation to develop the dosimetry system, WAZA-ARI (2011)
  • Author(s): F.Takahashi, et al.
  • Journal Title: Prog in Nucl Sci Technol Volume: (In press)
  • Peer Reviewed
• [Journal Article] WAZA-ARI : Computational dosimetry system for x-ray CT examinations, I Radiation transport calculation for organ and tissue doses evaluation using JM phantom
  • Author(s): Takahashi F, Endo A, Sato K, T. Hasegawa, Katsunuma Y, Ono K, Yoshitake T, Ban N, Kai M
  • Journal Title: Radiat.Prot.Dosim. in press
• [Journal Article] Effects of Human Model Configuration in Monte Carlo Calculations on Organ Doses from CT Examinations
  • Author(s): Takahashi F, Endo A, Sato K, Ono K, Yoshitake T, Hasegawa T, Katsunuma Y, Ban N, Kai M
  • Journal Title: Prog.in Nucl.Sci.Technol. in press
• [Journal Article] Development of web-based CT dose calculator, WAZA-ARI. International Conference on Radiation Protection in Medicine. Varna, September 2010.
  • Author(s): Ban N, Takahashi F, Sato K, Endo A, Ono K, Hasegawa T, Yoshitake T, Katsunuma Y, Kai M.
  • Journal Title: Radiat Prot Dosimetry in press
• [Presentation] WAZA-ARI : Computational dosimetry system for x-ray CT examinations, I Radiation transport calculation for organ and tissue doses evaluation using JM phantom (2010)
  • Author(s): Takahashi F, Endo A, Sato K, T.Hasegawa, Katsunuma Y, Ono K, Yoshitake T, Ban N, Kai M
  • Organizer: AOCRP-3
  • Place of Presentation: Tokyo
• [Presentation] WAZA-ARI : Computational dosimetry system for x-ray CT examinations : II. Development of web-based system (2010)
  • Author(s): Ban N, Takahashi F, Sato K, Endo A, Ono K, Hasegawa T, Yoshitake T, Katsunuma Y, Kai M
  • Organizer: AOCRP-3
  • Place of Presentation: Tokyo
• [Presentation] Development of web-based CT dose calculator, WAZA-ARI. (2010)
  • Author(s): Ban N, Takahashi F, Sato K, Endo A, Ono K, Hasegawa T, Yoshitake T, Katsunuma Y, Kai M
  • Organizer: International Conference on Radiation Protection in Medicine
  • Place of Presentation: Varna
• [Presentation] Development of web-based CT dose calculator, WAZA-ARI (2010)
  • Author(s): N.Ban, et al.
  • Organizer: International Conference on Radiation Protection in Medicine
  • Place of Presentation: Varna (Bulgaria)
• [Presentation] Effects of human model configuration in Monte Carlo calculations on organ doses from CT examination (2010)
  • Author(s): F.Takahashi, et al.
  • Organizer: Joint International Conference on Supercomputing in Nuclear Applications+Monte Carlo 2010
  • Place of Presentation: Tokyo
• [Presentation] 日本人ボクセルファントムによるCT診断時の線量評価システムの開発1:開発目的と全体計画 (2009)
  • Author(s): 甲斐倫明, 他
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: 大阪市
  • Year and Date: 2009-06-03
• [Presentation] 日本人ボクセルファントムによるCT診断時の線量評価システムの開発2:放射線輸送計算コードを用いたCT撮影における線量評価 (2009)
  • Author(s): 高橋史明, 他
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: 大阪市
  • Year and Date: 2009-06-03
• [Presentation] 日本人ボクセルファントムによるCT診断時の線量評価システムの開発1:開発目的と全体計画 (2009)
  • Author(s): 甲斐倫明, 他8名
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: シェラトン都ホテル大阪
• [Presentation] 日本人ボクセルファントムによるCT診断時の線量評価システムの開発-2:放射線輸送計算コードを用いたCT撮影における線量評価- (2009)
  • Author(s): 高橋史明, 他8名
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: シェラトン都ホテル大阪
• [Presentation] CT診断に伴う新生児の臓器線量-新生児ファントムによる実測値とImPACT推定値およびCT-Expo推定値の比較 (2009)
  • Author(s): 吉武貴康, 小野孝二, 長谷川隆幸, 勝沼泰, 伴信彦, 甲斐倫明
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: シェラトン都ホテル大阪
• [Presentation] CT診断による臓器線量のImPACT推定値およびCT-Expo推定値とガラス線量計による実測値の比較 (2009)
  • Author(s): 長谷川隆幸, 勝沼泰, 小野孝二, 吉武貴康, 伴信彦, 甲斐倫明
  • Organizer: 日本保健物理学会第43回研究発表会
  • Place of Presentation: シェラトン都ホテル大阪
• [Presentation] Analysis of organ doses from Computed Tomography (CT) examination by the radiation transport calculation to develop the dosimetry system, WAZA-ARI (2009)
  • Author(s): Takahashi F, Endo A, Sato K, T.Hasegawa, Katsunuma Y, Ono K, Yoshitake T, Ban N, Kai M
  • Organizer: The Fifth International Symposium on Radiation Safety and Detection Technology (ISORD-5)
  • Place of Presentation: Kitakyushu
• [Presentation] Analysis of Organ Doses from Computed Tomography (CT) Examination by the Radiation Transport Calculation to Develop the Dosimetry System, WAZAARI (2009)
  • Author(s): Fumiaki Takahashi, 他
  • Organizer: The Fifth International Symposium on Radiation Safety and Detection Technology (ISORD-5)
  • Place of Presentation: 北九州国際会議センター、北九州市