Patent Number: 
Section: claims

1. A detector arrangement for an X-ray phase contrast system, the detector arrangement comprising:a scintillator configured to convert X-ray radiation into optical radiation;an optical grating configured to be an analyzer grating which is adapted to a phase-grating of an X-ray phase contrast system; anda detector configured to detect the optical radiation, wherein the optical grating is located between the scintillator and the detector, wherein an optical path between the optical grating and the scintillator is free of focusing elements for the optical radiation, and wherein the optical grating is configured to be electronically adjustable. 2. The detector arrangement according to claim 1, further comprising an LCD pixel array configured to provide the optical grating; and wherein the LCD pixel array is configured to provide a stepping of the optical grating. 3. The detector arrangement according to claim 2, further comprising an optical polarizing unit positioned between the optical grating and the scintillator; andwherein the LCD pixel array is configured to dynamically change a polarization of the analyzer grating. 4. A system for X-ray phase contrast imaging, the system comprising:an X-ray interferometer comprising:a radiation source for emitting X-ray radiation;an object receiving space for arranging an object to be imaged;a phase grating; anda detector arrangement comprising:a scintillator configured to convert X-ray radiation into optical radiation;an optical grating configured to be an analyzer grating which is adapted to a phase-grating of an X-ray phase contrast system; anda detector configured to detect the optical radiation, wherein the optical grating is located between the scintillator and the detector, wherein an optical path between the optical grating and the scintillator is free of focusing elements for the optical radiation, and wherein the optical grating is configured to be electronically adjustable. 5. The system according to claim 4, wherein the optical grating comprises a pitch being adapted to the phase grating and to a distance between the optical grating and the radiation source. 6. The system according to claim 4, further comprising an LCD pixel array configured to provide the optical grating and at least one processor configured to control the LCD pixel array. 7. The system according to claim 4, wherein the radiation source is a point-like radiation source for emitting the X-ray radiation. 8. The system according to claim 4, wherein the radiation source is a large-focused radiation source for emitting the X-ray radiation; and wherein the system further comprises an absorption grating located between the radiation source and the object receiving space. 9. A method for X-ray phase contrast imaging, the method comprising:converting X-ray radiation to optical radiation using a scintillator;subsampling the optical radiation using an optical grating resulting in a subsampled optical radiation pattern, wherein an optical path between the optical grating and the scintillator is free of focusing elements for the optical radiation; anddetecting the subsampled optical radiation pattern using a detector. 10. The method according to claim 9, further comprising:providing the optical grating by a pixel array; and changing a position of the optical grating on the pixel array by at least one processor configured to control the pixel array. 11. The method according to claim 9, further comprising:polarizing the optical radiation resulting in a polarized optical radiation; andabsorbing a portion of the polarized optical radiation with a polarization mask pattern on an LCD pixel array providing the optical grating. 12. The method according to claim 11, further comprising:changing a relative phase position of the polarization mask pattern by at least one processor configured to control the LCD pixel array. 13. A non-transitory computer-readable medium having one or more executable instructions stored thereon, which, when executed by at least one processor, cause the at least one processor to perform a method for X-ray phase contrast imaging, the method comprising:converting X-ray radiation to optical radiation using a scintillator;subsampling the optical radiation using an optical grating resulting in a subsampled optical radiation pattern, wherein an optical path between the optical grating and the scintillator is free of focusing elements for the optical radiation; anddetecting the subsampled optical radiation pattern using a detector.