Title:
PARTICLE BEAM THERAPY SYSTEM
Document Type and Number:
Japanese Patent JP2014127377
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a particle beam therapy system capable of shortening the therapeutic irradiation time in scanning method, by shortening the time required for beam energy change in a synchrotron, thereby enhancing the dose rate.SOLUTION: A controller 600 of a particle beam therapy system 100 controls to emit a charged particle beam of a plurality of energies, while maintaining the safety limit constantly for a circulating beam during the emission period of a synchrotron 200, and accelerating or decelerating sequentially, turns a high frequency voltage applied to an emission device 26 off during acceleration or deceleration, and interrupts an unnecessary charged particle beam emitted from the synchrotron in a beam transportation system 300. Preferably, the safety limit is expanded by controlling the acceleration frequency during acceleration or deceleration, and emission of an unnecessary charged particle beam is suppressed.
Inventors:
SAITO KAZUYOSHI
NOMURA TAKUYA
NISHIUCHI HIDEAKI
NOMURA TAKUYA
NISHIUCHI HIDEAKI
Application Number:
JP2012283858A
Publication Date:
July 07, 2014
Filing Date:
December 27, 2012
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H05H13/04; A61N5/10; G21K5/02
Domestic Patent References:
| JP2009112483A | 2009-05-28 | |||
| JP2005332794A | 2005-12-02 |
Foreign References:
| US20110284762A1 | 2011-11-24 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki