隨著治療技術的進步，放射治療的品質保證日益受重視，本研究結合電子式照野影像擷取系統(EPID)以及蒙地卡羅模擬程式發展一套獨立於電腦治療計畫系統的強度調控放射治療線上病患治療劑量驗證系統；利用EPID得到病患穿透劑量分布，並與蒙地卡羅模擬計算所得EPID處的穿透劑量分布做相比，完成劑量驗證動作。首先，對於EPID進行劑量特性研究，確認適用於劑量驗證後，再進一步將其應用於強度調控放射治療劑量驗證。蒙地卡羅模擬部份則是利用EPID在病患治療前所取得的影像推得治療當時的通量分布去進行強度調控放射治療病患穿透劑量模擬；而後將EPID與蒙地卡羅模擬所得到的病患穿透劑量分布作比較。研究結果顯示，EPID不論對於絕對劑量或絕對劑量率的反應皆呈線性，且靜態照野穿透劑量分布驗證結果也確定EPID可應用於劑量驗證；而對於強度調控放射治療穿透劑量驗證結果則肯定了本方法在強度調控放射治療劑量驗證的可行性。

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