Patent ID: 6438203
Filing Date: 2002-08-20
Classification: A61N

Abstract:
A whole-body radiotherapy device with multiple radioactive sources, comprising, a rotary fixing frame, a source body and a collimator body having a rotating axis which is parallel to a longitudinal axis of a treatment couch;said source body having multiple radioactive sources and beam channels located therein, and wherein beams from said radioactive sources focus on a common focus point through said beam channels; said collimator body having collimators located therein, and said collimators have the same distribution pattern as the radioactive sources, said source body and said collimator body are fixed on said rotary fixing frame and can rotate around the rotating axis; in radial sectional planes, said radioactive sources and their beam channels are located within a fan shaped area whose included angle is less than 90Â°; said radioactive sources are distributed in two adjacent axial sectional planes which are spaced by 4Â°-5Â°, and stagger distributed in different radial sectional planes; said collimator body having an internal radius which is less than a full width of a human body, but more than half-width of a human body.