Method and apparatus for optimization of collimator angles in intensity modulated radiation therapy treatment
US7015490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Aug 11, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus to determine an optimum collimator angle of a multi-leaf collimator having an opening and multiple leaf pairs for closing portions of the opening to form a radiation beam arrangement having multiple radiation beam segments. The method and apparatus include application of a cost function to determine a collimator angle which provides for delivery efficiency and target conformity. The user can preferentially either selectively enhance delivery efficiency of the radiation beam arrangement, reducing a number of radiation beam segments and reducing a number of radiation beam monitor units required for delivery of the desired prescription, or selectively enhance conformity of the radiation beam arrangement to a target shape. The optimum collimator angle is then used for delivery of an optimized radiation beam arrangement to a patient by a radiation delivery device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.