X-ray CT apparatus including a photon-counting detector, and an image processing apparatus and an image processing method for correcting detection signals detected by the photon-counting detector
US10159450B2 · kind B2 · utility
5Cited by
80References
14Claims
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Key dates
| Filing date | Oct 1, 2015 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Oct 27, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/52
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An X-ray computed tomography (CT) apparatus according to an embodiment includes a photon-counting detector, correction circuitry, and reconstruction circuitry. The photon-counting detector includes a plurality of X-ray detection elements detecting X-ray photons applied from an X-ray tube. The correction circuitry corrects detection signals detected by the photon-counting detector for the respective X-ray detection elements, based on a centroid of an X-ray spectrum detected by the photon-counting detector. The reconstruction circuitry reconstructs a CT image based on the corrected detection signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.