X-ray ct apparatus, image processing apparatus, and image processing method
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorsTooru KATO, Hiroaki NAKAI
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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.
Claims14
An X-ray computed tomography (CT) apparatus comprising:
- a photon-counting detector configured to include a plurality of X-ray detection elements detecting X-ray photons applied from an X-ray tube;
- correction circuitry configured to correct 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;
- and
- reconstruction circuitry configured to reconstruct a CT image based on the corrected detection signals.
An image processing apparatus, comprising:
- correction circuitry configured to correct detection signals detected by a photon-counting detector including a plurality of X-ray detection elements configured to detect X-ray photons applied from an X-ray tube, for the respective X-ray detection elements, based on a centroid of an X-ray spectrum detected by the photon-counting detector;
- and
- reconstruction circuitry configured to reconstruct a computed tomography (CT) image based on the corrected detection signals.
An image processing method comprising:
- correcting detection signals detected by a photon-counting detector including a plurality of X-ray detection elements configured to detect X-ray photons applied from an X-ray tube, for the respective X-ray detection elements, based on a centroid of an X-ray spectrum detected by the photon-counting detector;
- and
- reconstructing a computed tomography (CT) image based on the corrected detection signals.
Dependencies are inferred from the claim text.