Method for calibration of a CT scanner
US8121250B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Aug 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/612
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibration of a CT comprises sequentially positioning a phantom having a non-circular cross section and a length commensurate with the extent of a detector at a plurality of positions between an X ray source and the detector array or sequentially positioning a plurality of generally similar phantoms or sequentially positioning a same phantom at a plurality of positions between the X ray source and detector array of the CT scanner; acquiring calibration attenuation data for X rays that have been attenuated by traversing the phantom positioned at each of the plurality of positions; and calculating calibration corrections for CT scanner scan data from the calibration attenuation data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.