研究生: |
張仲晴 Chung-Ching Chang |
---|---|
論文名稱: |
硼中子捕獲治療計畫系統NCTPlan對多形性膠原母細胞瘤之病患進行最佳化 Optimization of Boron Neutron Capture Therapy Treatment Planning System NCTPlan for Patient with GBM |
指導教授: |
董傳中
Chuan-Jong Tung 許芳裕 Fang-Yuh Hsu |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
原子科學院 - 生醫工程與環境科學系 Department of Biomedical Engineering and Environmental Sciences |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 109 |
中文關鍵詞: | 硼中子捕獲治療 、多形性膠原母細胞瘤 、清華大學開放式水池反應器 |
外文關鍵詞: | BNCT, GBM, THOR, NCTPlan |
相關次數: | 點閱:2 下載:0 |
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「多形性膠質母細胞瘤」(glioblastoma multiforme, GBM)是一種大腦中高度惡性的腫瘤,其最主要的特徵就是經過手術遺留的癌細胞,幾乎一定在旁邊的正常腦組織再衍生新的癌細胞,因而使得大部分病患不到兩年就死亡。而硼中子捕獲治療(boron neutron capture therapy, BNCT)就是種只能破壞腫瘤細胞與其鄰近的組織的治療方式,且在國際上對於治療GBM方面已取得不錯的治療效果,儼然形成近來研究的焦點。
我國清華大學的BNCT團隊也積極推動THOR於臨床上的應用,除了在2004年完成了中子射束通率的提高,更發展多項小動物細胞及藥物特性的研究,預期在未來的某一天能從事人體試驗與臨床治療。因此在發現THOR的射束品質較國際原子能總署(International Atomic Energy Agency, IAEA)所建議的指標值好之後,需要更深入的了解與探討THOR中子設束的特性。
本次研究首先就是利用MCNP程式模擬輻射在Snyder頭型假體中,與物質作用的情形,藉由三種假體射束參數—有效治療深度(AD)、有效治療比例(AR)及有效治療深度劑量率(ADDR),以評估THOR中子能譜THOR50c的強度和品質,更與已有多年臨床試驗的Harvard—MIT團隊所使用的M67中子能譜相比較,使此結果更具有說服力,也為THOR邁向臨床試驗奠定穩固的基礎。
接著利用由Harvard—MIT團隊所研發並授權於我國的治療計畫系統NCTPlan,分別對國內外的兩位GBM病患進行治療計畫最佳化,也就是改變治療參數,包含照野數目、照射方向等,找出最適合此兩位患者的治療方式,而使腫瘤接受到最高劑量以殺死癌細胞,但周圍正常組織與危急器官則盡可能地降低劑量以減少副作用的產生。
文中除了呈現THOR50c與M67相互比較,以及兩位GBM病患治療計畫最佳化的結果之外,也對於治療計畫NCTPlan的操作方法作了詳盡的描述,可提供使用者參考,相信對於NCTPlan於國內的使用有所助益。
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