Focus / detector system of an X-ray apparatus for producing phase-contrast images

摘要

The invention relates to a focus / detector system of an X-ray apparatus for producing projective or tomographic phase contrast images of an examination object, at least consisting of: a radiation source with a focus and a focus-side source grating, which is arranged in the beam path between the focus and the examination object, and a field of radiant coherent X-rays generated by a grid / detector arrangement with a arranged in the beam direction after the object under investigation grid with parallel to the source grid arranged grid lines for generating an interference pattern and a detector having a plurality of areal detector elements for measuring the radiation intensity behind the phase grating, wherein between phase grating and Detector no analysis grid is arranged, wherein the individual detector elements are each formed of a plurality of elongated detection strips which are parallel to the Gitterlini are aligned of the phase grating and connected in groups and arranged offset from one another or offset from one another positionable formed. Furthermore, the invention relates to an X-ray system or an X-ray C-arm system and a method for generating projective X-ray images of an examination subject with a focus / detector system according to the invention.