DETECTOR ARRANGEMENT FOR AN X-RAY PHASE CONTRAST SYSTEM AND METHOD FOR X-RAY CONTRAST IMAGING
FIG5 shows a schematic view of an embodiment of a method for X-ray phase contrast imaging
FIG5 shows an embodiment of a method 100 for X-ray phase contrast imaging. In that embodiment of the method 100, the method 100 is performed with on optical grating 12 being provided by a pixel array. The pixel array may for example be provided by a bi-stable display 23 or an active LCD pixel array 15.
schematic view
103
step
5
system
9
conversion elements
100
method
104
In step
105
in step
102
step
101
step steps
15
active LCD pixel array
106
In step
107
In step
['1. A detector arrangement for an X-ray phase contrast system (5), the detector arrangement (1) comprising: - a scintillator (11); - an optical grating (12); and - a detector (13); - wherein the optical grating (12) is arranged between the scintillator (11) and the detector (13) and is configured to be electronically adjustable; wherein the scintillator (11) converts X-ray radiation (2) into optical radiation (3); wherein the optical grating (12) is configured to be an analyzer grating being adapted to a phase-grating (21) of an X-ray phase contrast system (5) and -  characterised in that an optical path between the optical grating (12) and the scintillator (11) is free of focussing elements for optical radiation.', '3. Detector arrangement according to claim 2, wherein the detector arrangement (13) comprises an optical polarizing unit (16); wherein the optical polarizing unit (16) is positioned between the optical grating (12) and the scintillator (11); and wherein the LCD pixel array (15) is an active LCD pixel array (15) being configured to dynamically change a polarization of the analyzer grating.', '9. A method (100) for X-ray phase contrast imaging, the method comprising the following steps: a) converting (101) X-ray radiation to optical radiation with a scintillator; b) subsampling (102) the optical radiation with an optical grating resulting in a subsampled optical radiation pattern, wherein the optical path between the optical grating and the scintillator is free of focussing elements for optical radiation; and c) detecting (103) the subsampled optical radiation pattern with a detector.', '10. Method according to claim 9, wherein the optical grating is provided by a pixel array, the method (100) comprising the step: d) changing (104) the position of the optical grating on the pixel array with a processing unit controlling the pixel array.']