Apparatus and method for count loss calibration of photon-counting detectors in spectral computed tomography imaging
US9155516B2 · kind B2 · utility
5Cited by
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10Claims
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Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for photon count-loss calibration in a computed-tomography (CT) scanner, including capturing incident X-ray photons via a plurality of energy-discriminating detectors, determining photon counts of the captured incident X-ray photons in a plurality of energy windows at each energy-discriminating detector, and adjusting the determined photon counts in each energy window for each energy-discriminating detector based on a pre-determined photon count-loss look-up table and the determined photon counts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.