The Absorbed Dose in Cylindrical Cavities within Irradiated Bone

Abstract

A method is presented of measuring the energy absorbed near an interface in a medium exposed to a beam of X rays. The method employs a biological indicator. Nevertheless, direct measurements of the energy absorbed in small cavities within a high atomic number material have been made. A theoretical method for calculating the energy absorbed in cylindrical cavities has been developed. There is agreement between the experimental and theoretical results. Since the method is very difficult and time consuming, it is not recommended as a routine method of measuring the energy absorbed near an interface. Data for monoenergetic photons may be used to calculate the absorbed dose for any continuous spectrum of radiation.