Patent ID: 7427749

Claim:
A method for correcting a butting zone artifact with a plurality of x-ray detector modules, comprising: forming a plurality of butting lines by arranging the detector modules next to each other, the detector modules being a plurality of measuring fields; producing a calibration image of the detector modules; measuring a first gray-scale value in a first measuring field of a first detector module having a correction length parallel to a first butting line; measuring a second gray-scale value in a second measuring field of a second detector module facing the first measuring field, the second measuring field having the correction length; determining a difference between the first and second gray-scale values as a function of the correction length based on the calibration image of the detector modules; selecting for the first and second measuring field a minimal correction width extending into inside of the first and second detector modules based on a predetermined parameter and the determined difference of the first and second gray-scale values; and correcting the first and second gray-scale values with a predetermined algorithm using the minimal correction width so that the first and second gray-scale values have a continual transition.