Irradiation apparatus and irradiation method
US6984835B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2004 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Jun 11, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1045
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An irradiation apparatus has a large irradiation field and is capable of ensuring the uniformity of a dose distribution without strengthening the performance of an irradiation field enlarging device. The irradiation apparatus includes a beam interruption part for performing a plurality of irradiations of a radiation beam, a position control part for controlling a location to be irradiated in such a manner that the entire surface of the target can be irradiated in a plurality of irradiation zones including an overlapping area formed by the plurality of irradiations, and a multileaf collimator control part for providing a slope to a dose distribution in the overlapping area of the respective irradiation zones, so that the dose distribution over the entire surface of the target including the overlapping area is made flat or uniform by the plurality of irradiations of the radiation beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.