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Particle therapy system

  • US 7,247,869 B2
  • Filed: 10/25/2004
  • Issued: 07/24/2007
  • Est. Priority Date: 10/24/2003
  • Status: Expired due to Fees
First Claim
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1. A particle therapy system comprising a charged particle beam generation apparatus and a charged particle beam irradiation apparatus for irradiating a charged particle beam generated by said charged particle beam generation apparatus to an irradiation target,wherein said charged particle bam irradiation apparatus comprises a collimator for passing a part of the charged particle beam therethrough, and an energy measuring device including a charged particle beam entrance portion disposed upstream of said collimator to receive at least a part of the remaining charged particle beam, for measuring energy of the charged particle beam having entered said charged particle beam entrance portion, and wherein said energy measuring device measures the energy of the charged particle beam based on a position at which electric charges generate in maximum amount with incidence of the charged particle beam upon said charged particle beam entrance portion.

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