Charged particle beam irradiation system and charged particle beam extraction method
US7825388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Jun 13, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1096
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.