Radiation therapy plan dose perturbation system and method
US7945022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2009 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1076
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of determining a patient dose during or prior to therapy from an external radiation beam includes determining a dose distribution from a patient plan as delivered in a QA phantom at each appropriate beam angle and comparing the dose distribution determined from measurements or calculations to a corresponding treatment planning system (TPS) dose modeled distribution in the QA phantom and providing a correction distribution when applied to the TPS dose modeled distribution results in the dose distribution determined. The correction distribution may optionally be interpolated to non-measured points for each beam angle and geometrically projected toward the source of radiation through a volume that equals a dose volume of the TPS for a patient beam for each beam angle. The correction distribution is applied to the TPS patient dose volume for each beam angle for providing a corrected dose distribution in the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.