Patent ID: 7379575

Claim:
A method for correcting images recorded by a computer tomograph, comprising: reconstructing a 2D or a 3D image based upon projection data of images recorded by a computer tomograph; and correcting the 2D or 3D image by adding a correction image to the 2D or 3D image, wherein the correction image is computed by an iteration from a subset of the 2D or 3D image having a lower resolution and a less data compared to the 2D or 3D image and a subset of the projection data having a lower resolution and a less data compared to the projection data, the iteration is terminated until a difference between two successive correction images from two successive iteration steps is less than a predefined degree, and at least two different iterations are computed from two different subsets of the 2D or 3D image and two different subsets of the projection data.