Dosimetry system and method for radiation therapy
US8130905B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Oct 25, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Electronic portal imaging device (EPID) images are converted to an absolute dose at a simulated absolute dose plane in a measurement phantom for supporting intensity modulated radio therapy (IMRT) dose quality assurance (QA) by geometrically projecting the EPID image as may be needed, generating an output factor correction map specific to a radiation treatment beam, multiplying an EPID image by the output factor correction map for generating an output corrected EPID image, and convolving the output corrected EPID image with a redistribution kernel for generating a relative dose at a preselected dose plane. A wide field calibration map is then applied to the relative dose for generating an absolute dose at the preselected dose plane location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.