Megavoltage computed tomography during radiotherapy
US6618467B1 · kind B1 · utility
126Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Reduced dose megavoltage CT images are obtained using low flux data resulting from leakage through modulating shutters and/or collected by other means and augmented by incomplete high flux data collected during radiation therapy. The ability to construct tomographic projection sets from significantly varying flux rate data is provided by the use of air scans windowed to account for variations in mechanical leaf movement. These methods are also provide a means of imaging the patient entirely during radiation therapy treatments without any additional scan time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.