Simulation of X-ray Phase-contrast Imaging Using Grating-interferometry

We present a complete simulation framework for X-ray phase-contrast imaging inheriting the wave-like as well as the particle behavior of photons. The developed tool includes the modeling of a partially coherent X-ray source, the propagation of the X-ray waves through samples, and a full implementation of a detector, which in particular can be chosen to be the Medipix-detector [1]. Thus, the simulation is capable of physically modeling a grating-based interferometric imaging system reported e.g. in [2]. Results on such a setup concerning spatial and temporal coherence will be shown. The extent of the used energy range herein was chosen to coincide with the medical imaging range. Another key component of the setup is the implementation of a Medipix-detector in order to describe forthcoming energy-resolved measurements.