Patent ID: 11904186
Assignee: CAPITAL MEDICAL UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. The radiotherapeutical or radiosurgical system according to claim 2, wherein each of said at least three radiation sources projects onto a plane passing through the isocenter and perpendicular to the common rotation axis, and a line connecting a projection spot of one of said at least three radiation sources on the plane and the isocenter is defined as a projection line of a corresponding radiation source of said at least three radiation sources;
wherein an angle β1 is defined as an angle between a projection line of the first radiation source and a projection line of the second radiation source;
wherein an angle β2 is defined as an angle between the projection line of the second radiation source and a projection line of the third radiation source;
wherein an angle β3 is defined as an angle between the projection line of the third radiation source and the projection line of the first radiation source; and
wherein the angle β1, the angle β2, and the angle β3 are independently of each other in a range of 100-140°.