Material weighting of projection based spectral x-ray imaging
AssigneeGE Precision Healthcare LLC
InventorsJohannes Loberg, Martin Sjölin, Mats Persson, Fredrik Grönberg, Björn Cederström, Daniel Collin
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Abstract
A system and method for projection based spectral X-ray imaging, such as computed tomography (CT) imaging, the system and method comprising performing projection based material decomposition based on spectral X-ray data to generate a set of material basis sinograms, and performing a weighted combination of at least part of at least two material basis sinograms of the set of material basis sinograms into a reconstructed image based on material weighting in the projection domain.
Claims21
A method for projection based spectral X-ray imaging, the method comprising:
- performing projection based material decomposition based on spectral X-ray data to generate a set of material basis sinograms;
- and
- performing a weighted combination of at least part of at least two material basis sinograms of the set of material basis sinograms into a reconstructed image based on material weighting in the projection domain.
A computed tomography (CT) imaging system comprising:
- an X-ray source configured to emit X-rays;
- an X-ray detector configured to generate spectral X-ray data;
- a processor configured to:
- perform projection based material decomposition on the spectral X-ray data to generate a set of material basis sinograms;
- and
- perform a weighted combination of at least part of at least two material basis sinograms of the set of material basis sinograms into a reconstructed image based on material weighting in the projection domain.
Dependencies are inferred from the claim text.