A Note on the Calculation of Dose in X-ray Fields

Abstract

The possibility of calculating the dose at any point in a light atom medium irradiated by a beam of X rays, using the results of central axis dose measurements, has been envisaged by several workers, and the methods most used at present are those of Meredith and Neary (1944). They analyse the beam into elementary “pencils” and integrate the scattered radiation from these to obtain the total scatter dose at any point. It may be helpful to restate in physical terms the effective result of this process.