1. A method of analyzing a region of interest in an object, the method comprising: providing measurement data by a differential phase contrast X-ray imaging system, the measurement data comprising an at least 2-dimensional set of pixels wherein for each pixel the measurement data comprises three types of image data spatially aligned with each other, including: absorption representing image data A, differential phase contrast representing image data D, and coherence representing image data C; analyzing characteristics of the object in the region of interest based, for each pixel, on a combination of at least two of information comprised in the absorption representing image data A and information comprised in the differential phase contrast representing image data D and information comprised in the coherence representing image data C; and providing for each pixel an indication on a reliability of an analyzing result based on information comprised in the coherence representing image data C.