Apparatus for fixing radiation beam irradiation field forming member
First Claim
1. An apparatus for fixing a radiation beam irradiation field forming member to form an irradiation field matching with a shape of an object to be irradiated, when radiation beams are irradiated in a gantry, which fixes, to an end of radiation beam irradiating section within the gantry, the irradiation field forming member which comprises a bolus and a final collimator, of which the former adjusts a shape of cross-section of irradiation field at largest depth;
- and the latter finally determines a shape of the irradiation field, comprising;
a frame fixed on an end of radiation beam irradiating section and having on both sides grooves through which the bolus and the final collimator to be inserted from front;
a door through which the bolus and the final collimator which have been inserted into the frame are pushed from front up to a specified position; and
a member which places the bolus and the final collimator thus pushed by way of the door into proper position at rear part of the frame.
1 Assignment
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Accused Products
Abstract
A bolus and final collimators are inserted into an apparatus for fixing radiation beam irradiation field forming member, fixed on the front end of radiation beam irradiating section within a rotation gantry, through grooves of a frame, and pushed in by a door until they reach a specified position determined by the existence of a back panel. Through this arrangement it is possible to easily perform an exchange of boluses and final collimators which is required each time therapy is renewed for a patient, and to accurately determine the position of new bolus and final collimators.
58 Citations
16 Claims
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1. An apparatus for fixing a radiation beam irradiation field forming member to form an irradiation field matching with a shape of an object to be irradiated, when radiation beams are irradiated in a gantry, which fixes, to an end of radiation beam irradiating section within the gantry, the irradiation field forming member which comprises a bolus and a final collimator, of which the former adjusts a shape of cross-section of irradiation field at largest depth;
- and the latter finally determines a shape of the irradiation field, comprising;
a frame fixed on an end of radiation beam irradiating section and having on both sides grooves through which the bolus and the final collimator to be inserted from front; a door through which the bolus and the final collimator which have been inserted into the frame are pushed from front up to a specified position; and a member which places the bolus and the final collimator thus pushed by way of the door into proper position at rear part of the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- and the latter finally determines a shape of the irradiation field, comprising;
Specification