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US 11,432,789 B2Granted
Self-calibrating technique for x-ray imaging scanners
AssigneeCarestream Health, Inc.
InventorsWilliam J. Sehnert, Yuan Lin, Levon O. Vogelsang
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Abstract
A mobile radiography apparatus includes radiopaque markers disposed in a radiation path that extends from an x-ray source to a digital radiographic detector, which detector is mechanically uncoupled from the x-ray source or x-ray sources. A processing system calculates a position of the detector relative to the x-ray source or x-ray sources according to identified marker positions in acquired x-ray projection images, and reconstructs a volume image according to the acquired x-ray projection images.
Claims19
A mobile radiography system comprising:
- a plurality of x-ray sources;
- a radiographic detector mechanically uncoupled from the x-ray sources;
- a plurality of radiopaque markers, the radiopaque markers disposed in one or more radiation paths each extending from one of the x-ray sources to the radiographic detector;
- and
- a processor programmed to calculate a position of the radiographic detector relative to one or more of the plurality of x-ray sources according to positions of the radiopaque markers in x-ray projection images captured by the radiographic detector.
2 more elements
Dependencies are inferred from the claim text.