DEVICE FOR CHECKING THE IRRADIATION DOSE MEASURING CIRCUITS USED TO MEASURE THE IRRADIATION DOSES DELIVERED BY A RADIOTHERAPY APPARATUS

摘要

ABSTRACT OF THE DISCLOSURE:The invention relates to a device making it possible tocheck, prior to or after each irradiation treatment session, theproper operation of the dose-measuring systems associated with aradiotherapy apparatus and comprising at least one dose-measuringcircuit equipped with a counter system of preselect design. Thisdevice comprises a pulse generator, a contact breaker for applyingthe pulses to the counter system of at least one of the measuringcircuits and a relay making it possible to halt the generatorand reset the counter system to zero when coincidence occurs bet-ween the preselected number of pulses corresponding to a prese-lected dose level and a displayed number of pulses correspondingto the dose level effectively delivered by an irradiation source.