Patent ID: 11961166
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. The non-transitory storage medium storing instructions readable and executable by a computer to perform an image reconstruction method comprising:
performing iterative image reconstruction of projection imaging data to generate a reconstructed image;
wherein the iterative image reconstruction includes performing an update step that includes an edge preserving prior having a spatially varying edge preservation threshold, wherein a value of the edge preservation threshold at each image voxel depends on an amount of the imaging data contributing to the reconstructed image in a local neighborhood of the image voxel; and
wherein the dependence of the value at each image voxel of the spatially varying edge preservation threshold on the amount of the imaging data contributing to the reconstructed image in the local neighborhood of the image voxel provides: stronger edge preservation when the amount of the imaging data contributing to the reconstructed image in the local neighborhood of the image voxel is higher, and weaker edge preservation when the amount of the imaging data contributing to the reconstructed image in the local neighborhood of the image voxel is lower.