| Summary: | 碩士 === 元培科技大學 === 放射技術研究所 === 97 === The study aims at evaluation of optimization for the prostate cancer patient cured by Intensity Modulated Radiation Therapy (IMRT) technique. Intensity Modulation (IM) optimization and Direct Machine Parameter Optimization (DMPO) were compared to estimate the efficiency of optimization with five parameters including time, number of segments, number of MUs, Composite Objective Value (COV), and Conformity Index (CI). Besides, three setting parameters of DMPO, i.e., maximum number of segments, minimum segment area, and minimum MUs, were adjusted to approach the ideal treatment plan. This study shows the efficiency of DMPO is better than IM optimization. Furthermore, the setting parameters of DMPO are easily adjusted in clinical to make the treatment perfect.
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