RADIATION THERAPY DEVICE AND ITS RADIATION FIELD ADJUSTMENT JIG

摘要

PURPOSE: To adjust the position of a radiation field light source with having no relation with the opening of a collimator by using a light radiation field adjusting jig independent of a radiation head containing a radiation field light source. ;CONSTITUTION: In the case of a radiation therapy device which forms by means of a collimator the radiation field of radial rays radiated from a ray source, a radiation field adjusting jig 9 consisting of a rectangular plate 12 fitted to the upper part of a support portion is equipped at the pedestal 10 and this support portion fitted to the pedestal 10.;COPYRIGHT: (C)1993,JPO&Japio