X-ray radiography system for differential phase contrast imaging of an object under investigation using phase-stepping
AssigneeSiemens Aktiengesellschaft
InventorMarcus Radicke
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Abstract
An X-ray radiography system for differential phase contrast imaging of an object under investigation by phase-stepping is provided. The X-ray radiography has an X-ray emitter for generating a beam path of quasi-coherent X-ray radiation, an X-ray image detector with pixels arranged in a matrix, and a diffraction or phase grating, in which the X-ray emitter has an X-ray tube with a cathode and an anode. The X-ray tube is constructed in such a way that an electron ray beam originating from the cathode is associated with focusing electronics which produce, from electrons which are incident on an anode, at least one linear-shaped electron fan beam.
Claims5
An X-ray radiography system for differential phase contrast imaging of an object under investigation by phase stepping, comprising:
- an X-ray emitter for generating electron ray beams;
- an X-ray image detector with pixels arranged in a matrix;
- and
- a diffraction or phase grating,
- wherein the X-ray emitter comprises an X-ray tube,
- wherein the X-ray tube comprises a cathode and an anode, and
- wherein the X-ray tube further comprises focusing electronics,
- wherein the electron ray beams emitted from the cathode are influenced by the focusing electronics to produce a first set of linear-shaped electron fan beams and a second set of further refined linear-shaped electron fan beams,
- wherein the second set of the further refined linear-shaped electron fan beams are incident on the anode, and
- wherein a spacing between lines of the first set of the linear-shaped electron fan beams and the second set of the further refined linear-shaped electron fan beams is changed by actuation of the focusing electronics.
Dependencies are inferred from the claim text.