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Scanning system for differential phase contrast imaging

  • US 9,750,465 B2
  • Filed: 12/08/2010
  • Issued: 09/05/2017
  • Est. Priority Date: 12/10/2009
  • Status: Active Grant
First Claim
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1. An X-ray device for imaging an object, comprising:

  • an X-ray emitter arrangement, andan X-ray detector arrangement,wherein the X-ray emitter arrangement is adapted to emit an X-ray beam through the object onto the X-ray detector arrangement,wherein the X-ray beam is spatially at least partially coherent,wherein the X-ray beam is fan-shaped,wherein the X-ray detector arrangement comprises a phase grating and an absorber grating,wherein the X-ray detector arrangement comprises a detector for detecting X-rays,wherein the X-ray detector is an area detector,wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object,wherein the object has a region of interest which is larger than a detection area of the X-ray detector and the X-ray device is adapted to generate image data of the region of interest by moving the object and the X-ray detector arrangement relative to each other, wherein the X-ray emitter arrangement comprises an X-ray source with switchable emitter lines, wherein the X-ray emitter arrangement, in a direction of relative movement, of the X-ray detector arrangement with respect to the X-ray emitter arrangement, that is orthogonal to the beam, is larger than the X-ray detector arrangement, wherein the X-ray device is adapted to switch the emitter lines such that solely the emitter lines opposite to the X-ray detector arrangement are switched on.

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