10 MV x-ray SMRs obtained using zero-area S(p) correction factors derived by means of the Bjärngard-Petti method.

10 MV x-ray SMRs obtained using zero-area S(p) correction factors derived by means of the Bjärngard-Petti method.
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使用通过 Bjärngard-Petti 方法导出的零面积 S(p) 校正因子获得 10 MV X 射线 SMR。

DOI:
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发表时间:
1996
影响因子:
3.5
通讯作者:
A. Iwasaki
A. Iwasaki
中科院分区:
工程技术2区
文献类型:
--
作者:
A. Iwasaki

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基于汗(Khan)理论,产生了一组新的10兆伏(MV)X射线散射最大比(SMR)。这些新的散射最大比没有电子污染且已参数化。已经开发出一种用于确定在射野中心具有侧向带电粒子平衡(CPE)的最小射野尺寸的方法。研究发现,对于10兆伏X射线,在水中中心轴上较大深度处具有侧向带电粒子平衡的最小方形射野为3.5×3.5平方厘米。使用比约恩加德 - 佩蒂(Bjärngard - Petti)方法推导出零面积体模散射校正因子(S(p))。研究发现电子污染的影响是降低零面积S(p)校正因子。
Based on the Khan concept, a new set of 10 MV x-ray scatter-maximum ratios (SMRs) has been produced. THese new SMRs reflect no electron contamination and are parametrized. A method has been developed for determining the minimum field size with lateral CPE (charged particle equilibrium) at the field centre. It is found that for 10 MV x-rays the minimum square field with lateral CPE at large depths on the central axis in water is 3.5 x 3.5 cm2. The zero-area phantom scatter correction factor (S(p)) is derived using the Bjärngard-Petti method. It is found that the effect of electron contamination is to reduce the zero-area Sp correction factor.
蒙特卡罗计算散射与初级比率,以实现初级和散射剂量的标准化。
DOI: 10.1088/0031-9155/35/3/003
发表时间: 1990
影响因子: 3.5
作者:
Rice,RK;Chin,LM
通讯作者: Chin,LM