Patent ID: 7315604
Filing Date: 2008-01-01
Classification: A61B,G01N

Abstract:
1. A method for an x-ray device for suppressing beam hardening artifacts in an image of an object, the method comprising: acquiring N measured values relating to N different energy ranges of x-radiation passing through the object, per projection direction relative to each of a number of detector elements of a detector, where N>=2; respectively determining one pseudomonochromatic measured value, relative to each of the detector elements, from the acquired N measured values; reconstructing an image from the pseudomonochromatic measured values thus determined for the detector elements, in which the beam hardening artifacts are substantially suppressed; and displaying the reconstructed image, wherein the determination of the pseudomonochromatic measured value from the N measured values includes a determination of N transmission thicknesses of N different components of the object, the N different components of the object having differing energy dependencies of the absorption coefficients.