Simplified Monte Carlo dose calculation for therapeutic proton beams
Simplified Monte Carlo dose calculation for therapeutic proton beams
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DOI：
10.1143/jjap.41.l294
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发表时间：
2002-03-01
期刊：
影响因子：
--
通讯作者：
Tsunashima, Y
中科院分区：
文献类型：
--
作者：
Kohno, R;Sakae, T;Tsunashima, Y
本文提出了一种用于治疗质子束剂量计算的简化蒙特卡罗方法。它使用宽质子束测量的水中深度剂量分布来简单准确地计算材料中的能量损失。它采用非均匀材料的水等效模型。此外，还利用水等效厚度计算了材料中的多次散射效应。SMC方法的剂量计算的准确性进行了验证，通过与在一个异质体模的剂量测量比较。剂量分布的测量结果与SMC方法的计算结果吻合良好。尽管由基于笔形射束算法的剂量计算方法确定的那些显示出很大的差异。因此，剂量计算方法的SMC方法将是有用的应用程序的治疗计划的质子治疗。
A simplified Monte Carlo (SMC) method has been developed for dose calculation of therapeutic proton beams. It uses the depth-dose distribution in water measured by a broad proton beam to calculate the energy loss in a material easily and accurately. It employs the water-equivalent model of inhomogeneous materials. In addition, the multiple scattering effect in the materials is also calculated using the water-equivalent thickness. The accuracy of dose calculations by the SMC method is verified by comparison with dose measurements in a heterogeneous phantom. Results of the measured dose distributions agree well with calculations by the SMC method. though those determined by the dose calculation method based on the pencil beam algorithm show a large discrepancy. Therefore, the dose-calculation method by the SMC method will be useful for application to the treatment planning for proton therapy.