Experimental evaluation of pencil beam algorithm by measurements of dose distributions of protons traversing an L-shaped phantom
Experimental evaluation of pencil beam algorithm by measurements of dose distributions of protons traversing an L-shaped phantom
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DOI：
10.1143/jjap.40.441
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发表时间：
2001-01-01
期刊：
影响因子：
--
通讯作者：
Yasuoka, K
中科院分区：
文献类型：
--
作者：
Kohno, R;Takada, Y;Yasuoka, K
提出了一种基于铅笔束算法（PBA）的质子剂量计算方法，有望提高基于宽束算法（BBA）的常规质子剂量计算方法的精度。为了验证PEA计算的准确性，在水容器中使用硅半导体探测器（SSD）测量了水平质子束穿过具有l型水平截面的幻体所形成的剂量分布。测量的剂量分布与计算的结果吻合较好，均方根误差在2.3%以内。因此，PEA的剂量计算方法是有用的，适用于质子治疗的实际治疗计划。
A proton dose-calculation method has been developed on the basis of the pencil-beam algorithm (PBA), which is expected to improve the precision of the conventional method based on the broad-beam algorithm (BBA). In order to verify the accuracy of calculation by the PEA, dose distributions formed by a horizontal proton beam traversing a phantom with an L-shaped horizontal cross section were measured using a silicon semiconductor detector (SSD) in a water vessel. The results of the measured dose distributions agree well with the ones calculated casing the PEA within an rms error of 2.3%. Therefore, the dose-calculation method by the PEA is useful and applicable to actual treatment planning of the proton therapy.