AN OXYGEN BAROTHERAPY APPARATUS FOR USE WITH THE 4MeV ACCELERATOR*

Abstract

SUMMARY A barotherapy apparatus manufactured by the Commonwealth Aircraft Corporation Pty. Ltd. for the Peter MacCallum Clinic, Melbourne has been described. It is designed to operate at pressures of 60 psi oxygen (or less) in conjunction with a 4MeV Linear Accelerator (Metropolitan Vickers). The apparatus provides the means of obtaining a uniformity in dosi‐metry of tumours to be treated comparable with conventional techniques. It provides simple and accurate planning and positioning of patients before treatment, also comparable to the conventional methods in use. Multifield treatments can be given without decompression and recompression of the patient. The occupation time in the accelerator room has been cut to a minimum and does not impose restrictions on the use of the accelerator for routine purposes.