本文用出射剂量测量而获得全身照射的中线剂量,称为透视测量法.当体模为均匀体模(不含肺)时,有Dmind=f(A,Ψ)Mex;当体模为非均匀含有肺及肺的屏蔽物(铅橡胶)时,Dmind-f’(A、Ψ、I、i、d、P、B、b)Mex。因子f或f’依赖于体模(或病人)结构及尺寸.据此,如能确定f或f’,则反监测Mex即可获得对应的Dmind数据。同时设计了一个特殊结构的治疗床垫格架,在床软垫下有一个有机玻璃制成的格子架,其中有 In this paper, the median dose of whole body irradiation is obtained by measuring the exiting dose, which is called fluoroscopy. When the phantom is a uniform phantom without lungs, Dmind = f (A, Ψ) Mex. When the phantom is non-uniform Dmind-f ’(A, Ψ, I, i, d, P, B, b) Mex when containing a lung and lung shield (lead rubber) The factor f or f ’depends on the structure and size of the phantom (or patient). Accordingly, if f or f’ can be determined, the corresponding Dmind data can be obtained by monitoring Mex instead. At the same time designed a special structure of the treatment mattress frame, under the mattress in the mattress made of plexiglass frame, which has