Patent ID: 11883687
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A radiation treatment system comprising:
a gantry configured to rotate around an object;
a treatment head moving with the gantry, the treatment head being configured to deliver a treatment beam to the object, the treatment beam providing a maximum treatment radiation region;
a plurality of imaging radiation sources configured to emit imaging beams toward the object; and
one or more first detectors configured to detect at least a portion of the imaging beams, wherein when the treatment head is delivering the treatment beam to the object, the plurality of imaging radiation sources and the one or more first detectors are positioned outside at least a portion of the maximum treatment radiation region so as not to interfere with the treatment beam, at least one of the plurality of imaging radiation sources being positioned at an edge of the maximum treatment radiation region,
wherein when the treatment head is delivering the treatment beam to the object along a first direction, the first direction being along a central axis of the treatment beam emitted from the treatment head and distal to the treatment head, the at least one of the plurality of imaging radiation sources is positioned so that the at least one of the plurality of imaging radiation sources delivers an imaging beam along a second direction, the second direction being along a central axis of the imaging beam emitted from the at least one of the plurality of imaging radiation sources and distal to the at least one of the plurality of imaging radiation sources, a difference between the first direction and the second direction is less than 30 degrees.