Dose distribution around an 125I seed source in tissue.
Dose distribution around an 125I seed source in tissue.
复制标题
组织中 125I 种子源周围的剂量分布。
作者：
V. Krishnaswamy
利用吸收剂量常数和点各向同性源累积因子计算了~(125)I源在组织中的剂量分布。考虑了封装材料的影响。深度剂量值已通过热释光剂量计的测量得到验证。目前的数据给出的吸收剂量常数值为1.32rads cm2/mci-hr。而目前使用的价值为1.7。将深度-剂量值与其他公布的数据进行比较。
Dose distribution about an 125I source in tissue has been calculated using absorbed dose constant and point isotropic source buildup factors. The effect of encapsulation material has been included. Depth-dose values have been verified by measurements with thermoluminescent dosimeters. Present data gives a value for absorbed dose constant of 1.32 rads cm2/mCi-hr. compared to the presently used value of 1.7. Depth-dose values are compared with other published data.