近年來，核射線在分子醫學的臨床應用發展迅速，本研究針對用放射性核素打斷 DNA 的實驗數據，提出一機率模型做資料分析。分析的實驗數據是由放射性鎝（99mTc）進入 DNA 後，用光鑷子技術（optical tweezers）觀測 DNA 斷裂的時間。我們根據 DNA 斷裂行為，假設各種參數，以建立此 DNA 斷裂現象的機率模型。希望探討放射性鎝（99mTc）的活度在多少之下，可得到較小均方誤差（Mean Squared Error, MSE）。以期得知放射性物質在設定何種活度下，可得出較佳的估計，提供醫療領域上未知的生物資訊。

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