Radiotherapy apparatus
US9050461B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2009 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1061
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In radiotherapy apparatus comprising an imager for the MV beam and a separate kV imaging system, it is common for there to be significant artifacts in the kV image arising from the MV pulse. We disclose such a radiotherapy apparatus which is adapted to (i) cause the therapeutic source to emit radiation while keeping the diagnostic source inactive, (ii) read an image from the detector associated with the therapeutic source, (iii) cause the diagnostic source to emit radiation and while keeping the therapeutic source inactive, (iv) read an image from the detector associated with the diagnostic source, and (v) repeat as necessary. The control unit is preferably adapted to, at steps (ii) and (iv), read an image from both of the detectors, or to clear the “inactive” detector. The detectors are ideally flat-panel detectors, capturing a two-dimensional image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.