Patent ID: 6904125
Filing Date: 2005-06-07
Classification: A61B,A61N

Abstract:
1. A phantom for evaluating nondosimetric functions in radiation therapy installation having a patient couch and a gantry with a head thereon for generating a multi-leaf collimated beam, wherein the beam is directed toward said couch at an orientation dictated by relative orientations of said couch and gantry, comprising: a base adapted for disposition on said couch; and a component mounted to said base for rotation in accordance with said relative orientations of the couch and gantry, said component incorporating a plurality of known geometrical structures corresponding in shape to said multi-leaf collimated beam whereby upon irradiating said component with said beam to obtain an image thereof said nondosimetric functions may be evaluated by comparing the image of said component with said known geometrical structures and identifying discrepancies therebetween.