Charged particle irradiation system
First Claim
1. A charged particle irradiation system comprising:
- an accelerator for extracting a charged particle beam;
charged-particle-beam scanning equipment; and
a charged-particle-beam-position monitor system,wherein said charged particle irradiation system further includes a control unit for calculating a beam position at a target position on the basis of a signal received from the charged-particle-beam-position monitor system to control the charged-particle-beam scanning equipment so that the charged particle beam is moved to a desired irradiation position at the target position, andwherein in each predetermined cycle of the accelerator, said control unit corrects the value of an excitation current applied to the charged-particle-beam scanning equipment on a specified cycle basis on the basis of information about the position and the angle of the charged particle beam.
2 Assignments
0 Petitions
Accused Products
Abstract
A charged particle irradiation system that positions the beam at a target position to avoid irradiation of normal tissue includes an acceleration system 6 for extracting a charged particle beam, scanning magnets 24 and 25, and charged particle beam position monitors 26 and 27. On the basis of signals received from the charged particle beam position monitors 26 and 27, the control unit 70 calculates a beam position at a target position and then controls the scanning magnets 24 and 25 so that the charged particle beam is moved to a desired irradiation position at the target position. The control unit 70 corrects the value of an excitation current applied to each of the scanning magnets 24 and 25 on a specified cycle basis on the basis of information about the position and the angle of the charged particle beam.
-
Citations
19 Claims
-
1. A charged particle irradiation system comprising:
-
an accelerator for extracting a charged particle beam; charged-particle-beam scanning equipment; and a charged-particle-beam-position monitor system, wherein said charged particle irradiation system further includes a control unit for calculating a beam position at a target position on the basis of a signal received from the charged-particle-beam-position monitor system to control the charged-particle-beam scanning equipment so that the charged particle beam is moved to a desired irradiation position at the target position, and wherein in each predetermined cycle of the accelerator, said control unit corrects the value of an excitation current applied to the charged-particle-beam scanning equipment on a specified cycle basis on the basis of information about the position and the angle of the charged particle beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
Specification