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Charged particle beam treatment apparatus

A technology of charged particle beams and treatment devices, applied in treatment, X-ray/γ-ray/particle irradiation therapy, circuits, etc., can solve difficult problems such as high-precision plasma, achieve high-precision responsiveness, and suppress irradiation dose Effect of change

Active Publication Date: 2015-09-23
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to control the concentration of plasma in the ion source with high precision and good responsiveness

Method used

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  • Charged particle beam treatment apparatus
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Embodiment Construction

[0024] Embodiments of the present invention will be described with reference to the drawings, but the present embodiments below are examples for describing the present invention, and are not intended to limit the present invention to the following. In the description, the same symbols are used for the same elements or elements having the same functions, and repeated explanations are omitted.

[0025] Such as figure 1 and figure 2 As shown, a charged particle beam therapy apparatus 1 includes an ion source device 2, a cyclotron 100, a beam transport unit 3, a rotating stand 52, and an irradiation nozzle 8 (irradiation unit). The cyclotron 100 is an accelerator that accelerates charged particles generated by the ion source device 2 to produce charged particle beams R. The charged particle beam R is a particle beam obtained by accelerating charged particles to a high speed. Examples of the charged particle beam R include proton beams, heavy particle (heavy ion) beams, electro...

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Abstract

A charged particle beam treatment apparatus includes: a cyclotron configured to accelerate charged particles while turning the charged particles along a predetermined orbital plane; an irradiation portion configured to irradiate an irradiation object with a charged particle beam while scanning the charged particle beam emitted from the cyclotron; a measurement portion configured to measure a dose of the charged particle beam emitted from the cyclotron; and a control portion. The cyclotron has a pair of chopper electrodes which can switch ON / OFF of the charged particle beam from the cyclotron by changing an orbit of the charged particles that pass through the orbit, and a power source configured to apply a voltage to the pair of chopper electrodes. The control portion controls a size of a voltage in at least any one of the pair of chopper electrodes based on the dose measured by the measurement portion.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2014-055977 filed on March 19, 2014. The entire content of the application is incorporated in this specification by reference. [0002] The present invention relates to a charged particle radiotherapy device. Background technique [0003] Patent Document 1 discloses a charged particle beam therapy apparatus including an irradiation unit that irradiates charged particle beams (scanning beams), a scanning electromagnet that scans the charged particle beams, and a control unit that controls the operation of the scanning electromagnets. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2011-191184 [0005] The above-mentioned charged particle beam therapy apparatus irradiates a subject to be irradiated with charged particle beams while scanning (Scan) along a predetermined line. It is preferable that the dose of charged particle beams irradiated to the irradiation target b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCG01T1/02H01J2237/15H01J37/304H01J37/1474H01J2237/30483A61N5/1043A61N5/1067A61N5/1081A61N2005/1087
Inventor 戸内豊井上淳一
Owner SUMITOMO HEAVY IND LTD
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