Two-dimensional dose distribution of 125I seeds.
Two-dimensional dose distribution of 125I seeds.
复制标题
125I 种子的二维剂量分布。
DOI：
10.1118/1.595689
复制
发表时间：
1985
期刊：
影响因子：
3.8
通讯作者：
Kubiatowicz,DO
中科院分区：
文献类型：
--
作者：
Ling,CC;Schell,MC;Yorke,ED;Palos,BB;Kubiatowicz,DO
已经测量了用于组织间植入物的新型（型号6711）125 I粒子的二维剂量分布。两种独立的方法，使用硅二极管或热释光剂量计，产生了相同的结果。在离粒子中心任意给定的距离处，剂量随θ（相对于粒子轴的角度）而变化。同样，在不同θ值下，剂量分布的依赖性也不同。这些观测可以定性地理解的几个因素，即源封装，几何关系，衰减和散射。近似的测量结果的经验表达式已被开发，以方便临床剂量分布计算。
Two‐dimensional dose distribution has been measured for the new (model 6711)125I seeds used in interstitial implants. Two independent methods, using a silicon diode or thermoluminescent dosimeters, yielded identical results. At any given distancerfrom the seed center, the dose varies with θ, the angle relative to the seed's axis. Similarly, therdependence of the dose distribution is different at various θ values. These observations can be qualitatively understood in terms of several factors, namely, source encapsulation, geometrical relationship, and attenuation and scatter. Empirical expressions which approximate the measured results have been developed to facilitate clinical dose distribution calculations.