These tutorials introduce some basics of imaging with coherent X-rays, focusing on phase
contrast. We consider the transport-of-intensity equation, as one particular method for X-ray …

X-ray phase-contrast imaging is a technique that aims to reconstruct the projected
absorption and refractive index distributions of an object. One common feature of …

We present a solution to the phase problem in near-field x-ray (propagation) imaging. The
three-dimensional complex-valued index of refraction is reconstructed from a set of …

X-ray propagation-based phase-contrast imaging is an attractive phase-sensitive imaging
technique that has found applications in many research fields. Here, we report the …

Differential phase-contrast is a recent technique in the context of X-ray imaging. In order to
reduce the specimen's exposure time, we propose a new iterative algorithm that can achieve …

We present a quantitative, non-interferometric, X-ray differential phase contrast imaging
technique based on the edge illumination principle. We derive a novel phase retrieval …

A unified theory of noninterferometric phase recovery based on the so-called ambiguity
function is introduced. The theory is used to analyze previously published techniques and …

Propagation-based phase-contrast X-ray imaging is by now a well established imaging
technique, which–as a full-field technique–is particularly useful for tomography applications …

Propagation-based phase-contrast X-ray imaging provides high-resolution, dose-efficient
images of biological materials. A crucial challenge is quantitative reconstruction, referred to …

Coherent wave-propagation in the near-field Fresnel-regime is the underlying contrast-
mechanism to (propagation-based) x-ray phase contrast imaging (XPCI), an emerging …