Radiant energy – Irradiation of objects or material – Ion or electron beam irradiation
Reexamination Certificate
2007-02-23
2010-11-02
Kim, Robert (Department: 2881)
Radiant energy
Irradiation of objects or material
Ion or electron beam irradiation
C315S501000, C607S002000
Reexamination Certificate
active
07825388
ABSTRACT:
A charged particle beam irradiation system and a charged particle beam extraction method which can prevent erroneous irradiation of a charged particle beam in the direction of advance of the charged particle beam. The system and method are featured in stopping supply of an ion beam to one or more of a plurality of angle zones in each of which a target dose is attained, the angle zones being formed by dividing an RMW in a rotating direction thereof, and in allowing the supply of the ion beam to one or more other angle zones in each of which a target dose is not yet attained. The invention can easily adjust beam doses at various positions in an affected part of the patient body in the direction of advance of the ion beam, and can greatly reduce the probability of erroneous irradiation that the beam dose becomes excessive or deficient at the various positions within the affected part of the patient body in the direction of advance of the ion beam.
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Akiyama Hiroshi
Hiramoto Kazuo
Matsuda Koji
Nihongi Hideaki
Hitachi , Ltd.
Kim Robert
Mattingly & Malur, P.C.
Smith Johnnie L
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