使用弗莱彻-休特妇科施源器对¹³⁷Cs源进行剂量测定。

Dosimetry of 137Cs sources with the Fletcher-Suit gynecological applicator.

作者信息

Saylor W L, Dillard M

出版信息

Med Phys. 1976 Mar-Apr;3(2):117-9. doi: 10.1118/1.594277.

Abstract

Measurements were made in water about the tandem and ovoid structures of the Fletcher-Suit applicator loaded with a 137Cs source. The dose rate was found to vary as much as 25% as a result of differential absorption in the ovoid. Empirically based trigonometric expressions are suggested which provide the absorption correction as a function of the two angles of a spherical coordinate system. Computer calculated dose rates, with and without the absorption corrections, are compared.

摘要

在装有¹³⁷Cs源的Fletcher-Suit施源器的串联和卵形结构周围的水中进行了测量。结果发现，由于卵形结构中的差异吸收，剂量率变化高达25%。提出了基于经验的三角表达式，该表达式根据球坐标系的两个角度提供吸收校正。比较了计算机计算的有无吸收校正的剂量率。