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  2. Chung Shan Medical University
  3. Project/研究計畫(老師)
  4. 醫用加速器的中子輻射評估
 
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醫用加速器的中子輻射評估

  • Details
Project title
96學年度國家科學及技術委員會補助研究計畫
Acronym
專題研究計畫
Internal ID
NSC96-2320-B040-017
Principal Investigator
Chen, Chien-Yi  
Status
research project
Start Date
August 1, 2007
End Date
July 31, 2008
Organizations
Department of Medical Imaging and Radiological Sciences  
Partner Organizations
National Science and Technology Council  
Project Web Site
https://www.grb.gov.tw/search/planDetail?id=1442340
Keywords
醫用直線加速器
始活化法
FHT-751
中子輻射
SAND II
Description
國內各醫學中心近年來加快裝設醫用直線加速器,進行強度調控放射治療
(intensity modulated radiation therapy; IMRT)。惟運轉中的高能加速器會有巨量中
子自靶區外釋,造成治療室、迷道、工作室的中子輻射,大幅增加,並衍生放射
性核種,本計畫以(1)始活化法(Threshold activation method)監測中山醫學大學附
設醫院,15MeV 的Varian 21Ex(Varian Associates, Palo Alto, CA)醫用直線加速器
中子輻射及(2)FHT-751 中子偵檢器來偵測治療室、迷道、控制室等的劑量分佈,
再運用(3) SAND II 程式驗證各群中子場分佈(4)中子強度及加馬射線在迷道的阻
擋效果,進而對日後醫學中心之加速器現場提出必要的輻射防護建議。
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