FREQUENCY DEPENDENT COMBINATION OF X-RAY IMAGES OF DIFFERENT MODALITIES

摘要

The present invention relates to X-ray imaging technology. In phase-contrast imaging, different types of image information, e.g. absorption image information and differential phase-contrast image information, may be obtained by a single image acquisition process. Individual types of image information comprise different image properties. The present invention relates to a frequency dependent combination of different types of image information to obtain a combined image having improved properties over the individual image information and their respective image information type. Accordingly, an apparatus (56) as well as a method (100) for image processing in X-ray imaging of an object is provided comprising receiving (102) first image information of the object of a first image information type, receiving (104) second image information of the object of a second image information type,wherein the second image information type is different from the first image information type. Subsequently the first image information and the second image information is combined (106) to obtain combined image information of the object, wherein the combination of the first image information and the second image information is a frequency-dependent combination, depending on the spatial frequency of the first image information and the second image information.

主权项

1. Apparatus (40, 62, 52), comprising a processing element (56) adapted to perform a method (100) for image processing in X-ray imaging of an object (14) according to one of claims 4 to 10, comprising
a receiving element adapted for receiving first image information (20a) of the object of a first image information type; a receiving element adapted for receiving second image information (20b) of the object of a second image information type, wherein the second image information type is different from the first image information type; and a combining element adapted for combining the first image information and the second image information to obtain combined image information (22) of the object; wherein the combination of first image information and second image information is a frequency dependent combination, depending on the spatial frequency of the first image information and second image information.