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

摘要

The invention relates to a focus / detector system (F SUB 1 /SUB, D) of an X-ray apparatus (1) for generating projective or tomographic phase contrast recordings, at least consisting of a radiation source (2) with a focus (F SUB 1 /SUB) and a focus-side source grating (G SUB 0 /SUB), which is arranged in the beam path and generates a field of beam-wise coherent X-rays, and a detector arrangement with a plurality of grating / detector modules arranged next to one another (G SUB Dx /SUB), which each have one behind the other in the beam direction: - at least one phase grating (G SUB 1x /SUB) for generating a first interference pattern, - an analysis grating (G SUB 2x /SUB) to generate another interference pattern - and surface-mounted detector elements (D SUB x /SUB), - whereby the individual grid lines of all grids (G SUB o /SUB, G SUB 1 /SUB, G SUB 2 /SUB) are aligned parallel to each other. In addition, the invention also relates to the use of this focus / detector system in an X-ray system for generating projective images, a C-arm device and a CT system.