Patent ID: 9179883
Filing Date: 2015-11-10
Classification: A61B,G01T

Abstract:
1. An X-ray image acquisition system for differential phase contrast imaging of an examination object, said system comprising: at least an X-ray emitter configured to generate quasi-coherent X-ray radiation; an X-ray image detector including pixels arranged in a matrix; and a diffraction or phase grating arranged between the examination object and the X-ray image detector, the X-ray image detector including a detector layer formed of a plurality of pixels in an analysis direction perpendicular to grating lines of the diffraction or phase grating, wherein during each iteration of a readout process, a first plurality of subgroups of the plurality of pixels are read out while a second plurality of subgroups of the plurality of pixels are not read, each of the second plurality of subgroups being interposed between two of the first plurality of subgroups, each of the first and second plurality of subgroups including at least one of the plurality of pixels, the first and second plurality of subgroups change in each iteration of the readout process compared to other iterations of the readout process, and the readout process is iteratively performed until all of the plurality of pixels are read out.