A method for calculating the dose due to capture gamma rays in accelerator mazes.
An empirical technique for calculation of the capture gamma ray dose in the maze of high-energy medical accelerators is described. The total photon dose was measured along the maze centre line and by use of a graphical technique the capture gamma dose and the low-energy photon dose component were determined. Tenth-value lengths for both photon dose components are reported for four medical accelerators operating with megavoltages in the range 16.8-22.0 MV. The capture gamma dose and the low-energy photon dose in the maze were related to the following parameters: the room surface area, the distance from the isocentre to the inner maze entrance, and the neutron head leakage at a fixed distance from the target.
Published In/Presented At
McGinley, P. H., Miner, M. S., & Mitchum, M. L. (1995). A method for calculating the dose due to capture gamma rays in accelerator mazes. Physics in medicine and biology, 40(9), 1467–1473. https://doi.org/10.1088/0031-9155/40/9/006
Medicine and Health Sciences | Oncology
Department of Radiation Oncology