ARTIFACT REDUCTION FOR X RAY IMAGE RECONSTRUCTION USING A GEOMETRY MATCHED COORDINATE GRID

摘要

A method for processing image data of an X ray device (10) comprises the steps of: receiving a plurality of two dimensional projection images (32) from an object of interest (22) wherein the projection images have been acquired by transmitting X rays (20) through the object of interest (20) with respect to different view angles; generating a three dimensional raw image volume (36) from the plurality of two dimensional projection images (32) with respect to a coordinate grid (50) adapted to the geometry of the transmitted X rays (20); and generating a deconvolved three dimensional image (40) by applying a two dimensional deconvolution to slices (52) of the three dimensional raw image volume (36) which slices (32) are adapted to the coordinate grid (50).