Particle therapy system

• US 20070053484A1
• Filed: 01/26/2006
• Published: 03/08/2007
• Est. Priority Date: 12/26/2003
• Status: Active Grant

• Current Assignee: Daishun Chiba, Yasutake Fujishima
• Original Assignee: Daishun Chiba, Yasutake Fujishima
• Inventors: Fujishima, Yasutake, Chiba, Daishun
• Granted Patent: US 7,586,112 B2
• Time in Patent Office: Days
• US Class Current: 378/16
• CPC Class Codes: A61N 2005/1087 Ions; Protons
• CPC Class Codes: A61N 5/10 X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy A61N5/01 takes precedence
• CPC Class Codes: A61N 5/1079 Sharing a beam by multiple treatment stations
• CPC Class Codes: G21K 5/04 with beam-forming means

Abstract

A particle therapy system capable of increasing the number of patients treated in one treatment room per unit time. The particle therapy system comprises a charged particle beam generator for generating an ion beam, an irradiation apparatus for irradiating the ion beam extracted from the charged particle beam generator to an irradiation target, a beam transport system for transporting the ion beam extracted from the charged particle beam generator to the irradiation apparatus, and a central control unit for producing a set of command data to command excitation currents for magnets disposed in the charged particle beam generator and the beam transport system, the set of command data being classified into group-1 data and group-2 data.

Claims

1. A particle therapy system comprising:

a charged particle beam generator for generating a charged particle beam;

an irradiation apparatus for irradiating the charged particle beam extracted from said charged particle beam generator to an irradiation target;

a rotating gantry including said irradiation apparatus and installed rotatably;

a beam transport system for transporting the charged particle beam extracted from said charged particle beam generator to said irradiation apparatus, said beam transport system including a gantry portion located in said rotating gantry; and

a control unit for controlling part of magnets disposed in said gantry portion of said beam transport system by using first command values of a first command value group depending on a rotation angle of said rotating gantry in a group of command values stored in storing means to command excitation currents for magnets disposed in said charged particle beam generator and said beam transport system, and controlling said magnets disposed in said charged particle beam generator and the magnets disposed in said beam transport other than said part of magnets disposed in said gantry portion by using second command values of a second command value group not depending on the rotation angle of said rotating gantry in said group of command values stored in said storing means.

4. A particle therapy system according to claim 1, wherein said part of magnets disposed in said gantry portion of said beam transport system comprises steering magnets of which the excitation currents are controlled by said control unit based on said first command values.

5. A particle therapy system according to claim 1 or 21 further comprising angle development computing means for computing the first command value group depending on the rotation angle of said rotating gantry.

9. A particle therapy system according to claim 1 or 21, further comprising energy development computing means for computing the first and second command value groups depending on energy of the charged particle beam extracted from said charged particle beam generator.

13. A particle therapy system according to claim 1 or 21, said storing means includes first command value storing means for storing the first command value group, second command value storing means for storing the second command value group, and index information storing means for storing index information to make the first command value group and the second command value group correspondent to each other.

17. A particle therapy system according to claim 5, said storing means includes first command value storing means for storing the first command value group, second command value storing means for storing the second command value group, and index information storing means for storing index information to make the first command value group and the second command value group correspondent to each other.

19. A particle therapy system according to claim 13, said control unit includes reading means for reading the first command value group and the second command value group, which are made correspondent to each other, out of said first command value storing means and said second command value storing means by using the index information read out of said index information storing means.

20. A particle therapy system according to claim 1, further comprising said storing means in which said first and second command value groups are stored.

2. (canceled)

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21. A particle therapy system comprising:

a charged particle beam generator for generating a charged particle beam;

an irradiation apparatus for irradiating the charged particle beam extracted from said charged particle beam generator to an irradiation target;

a rotating gantry including said irradiation apparatus and installed rotatably;

a beam transport system for transporting the charged particle beam extracted from said charged particle beam generator to said irradiation apparatus, said beam transport system including a gantry portion located in said rotating gantry; and

a control unit for controlling steering magnets disposed in said gantry portion of said beam transport system by using first command values of a first command value group in a group of command values stored in storing means to command excitation currents for magnets disposed in said charged particle beam generator and said beam transport system, and controlling said magnets disposed in said charged particle beam generator and the magnets disposed in said beam transport system other than said steering magnets by using second command values of a second command value group in said group of command values stored in said storing means.

8. A particle therapy system according to claim 4 or 22, further comprising angle development computing means for computing the first command value group depending on the rotation angle of said rotating gantry.

12. A particle therapy system according to claim 4 or 22, further comprising energy development computing means for computing the first and second command value groups depending on energy of the charged particle beam extracted from said charged particle beam generator.

16. A particle therapy system according to claim 4 or 22, said storing means includes first command value storing means for storing the first command value group, second command value storing means for storing the second command value group, and index information storing means for storing index information to make the first command value group and the second command value group correspondent to each other.

22. A particle therapy system according to claim 21, further comprising said storing means in which said first and second command value groups are stored.

23. A particle therapy system according to claim 21, wherein said storing means stores said first command value group as a command value group depending on a rotation angle of said rotating gantry and stores said second command value group as a command value group not depending on a rotation angle of said rotating gantry.