The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2011
Filed:
Oct. 02, 2008
Katsuhisa Yoshida, Tokyo, JP;
Katsuhisa Yoshida, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A particle-beam exposure apparatus and a particle-beam therapeutic apparatus are obtained, in which, by reducing diameter increase, due to scattering in a range shifter, of a charged particle beam, the charged particle beam whose diameter is so narrow that spatially accurate exposure into the target is possible can be supplied, as well as, by placing the range shifter at a position apart from a patient, intimidation caused by a movement noise, etc. can be prevented. A particle-beam exposure apparatus and a particle-beam therapeutic apparatus include a range shifterfor varying energy of a charged particle beam with a thickness of the range shifterbeing changed during exposure of the charged particle beam, so that a range of the charged particle beam at a targetto be exposed is set to a desired value; and a set of quadrupole magnets, being placed between the range shifterand the target, based on the magnetization amount of the set of quadrupole magnetsbeing controlled corresponding to the charged-particle-beam energy varied by the range shifter, for reducing diameter increase, due to scattering at the range shifter, of the charged particle beam at the target