Patent ID: 7315605

Claim:
A method for reconstructing a 3D image data set of a moving object from a set of projection images which are recorded at least partially one after the other from different projection directions, comprising: dividing the set of projection images into a plurality of subsets based on a specific motion phase of the moving object; reconstructing an incomplete 3D image of the moving object from each projection image of the subsets using a local tomography method, wherein the incomplete 3D image obtained using local tomography contains a segment of an intensity edge in the moving object and the segment is essentially parallel to a projection direction of a projection image belonging to an associated subset; determining a motion field of the moving object from the incomplete 3D image, the motion field showing a motion of the moving object between two successive motion phases; generating the 3D image data of the moving object with a motion correction effected by the motion field; and displaying a 3D image of the moving object based on the generated 3D image data.