A new analytical methodology was developed for estimating electron-absorbed fractions in soft-tissue biological volumes from mono-energy emitters, uniformly distributed within these volumes. The approach was originally developed for soft-tissue spheres and was extended to ellipsoids. The method involves a procedure of size rescaling to the electron CSDA ranges. The rescaling was applied to large published datasets of electron-absorbed fractions in soft-tissue spheres. A new effect was demonstrated, i.e., that it is possible to describe the rescaled data on absorbed fractions by a single smooth ‘universal curve’. A simple analytical formula is suggested, which describes the curve as a function of a single argument (the so-called rescaled radius) with saturation. Practical application of the method for estimating internal doses to non-human biota was demonstrated. It is concluded that the method provides an effective analytical tool for calculating the electron-absorbed fractions in soft-tissue bio-volumes relevant to various organisms and organs.

开发了一种新的分析方法，用于估算单能量发射器中软组织生物体积中电子吸收的分数，这些能量在这些体积中均匀分布。该方法最初是针对软组织球体开发的，后来扩展到了椭球体。该方法涉及将尺寸重新缩放至电子CSDA范围的过程。该重新缩放应用于软组织球体中已发布的电子吸收分数的大型数据集。证明了一种新的效果，即可以通过一条平滑的“通用曲线”描述吸收分数的重新换算数据。建议使用一个简单的解析公式，该公式将曲线描述为具有饱和度的单个参数（所谓的重新缩放半径）的函数。证明了该方法用于估计非人类生物群内部剂量的实际应用。结论是，该方法为计算与各种生物和器官相关的软组织生物体积中的电子吸收分数提供了有效的分析工具。