Kilovoltage X-Ray Source in Medical Linac for Beam's Eye View Imaging
Publication Date: 2004-Apr-19
The IP.com Prior Art Database
A kilovoltage x-ray source in the head of a linac is proposed. The kV source can move into a position to produce a collinear (with respect to the megavoltage treatment beam) beam for imaging. The focal spot of the kV source can be made to coincide with that of the MV treatment beam, providing true beam's eye view. It brings distinctive kV imaging capability to the linac, permitting high quality kilovoltage portal images and kV cone beam CT operation in the linac. The invention will benefit patient positioning and image-guided radiotherapy (IGRT).