Particle beam irradiation method and particle beam irradiation apparatus used for the same
US7525104B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Jan 12, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1096
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a particle beam irradiation method and a particle beam irradiation apparatus in which depth direction irradiation field spread and lateral direction irradiation field spread are performed, an irradiation dose in each of irradiation layers of an irradiation target is made substantially constant, and control is simplified.The depth direction irradiation field spread is made the active irradiation field spread in which plural irradiation layers having different ranges in an irradiation direction of the particle beam are superimposed, the lateral direction irradiation field spread is made the active irradiation field spread in which irradiation spots of the particle beam are superimposed in the lateral direction, and a bolus having a shape along a deepest part of the irradiation target in the depth direction is disposed to cross the particle beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.