Like many other advanced imaging methods, x-ray phase contrast imaging and tomography
require mathematical inversion of the observed data to obtain real-space information. While …

Promoted by the advent of coherent synchrotron light sources, phase contrast tomography
allows to resolve three-dimensional variations of an unknown sample's complex refractive …

State-of-the-art techniques for phase retrieval in propagation based X-ray phase-contrast
imaging are aiming to solve an underdetermined linear system of equations. They …

The reconstruction problem in in-line X-ray Phase-Contrast Tomography is usually
approached by solving two independent linearized sub-problems: phase retrieval and …

Propagation-based X-ray phase contrast enables nanoscale imaging of biological tissue by
probing not only the attenuation but also the real part of the refractive index of the sample …

X-ray phase contrast imaging based on free space propagation relies on phase retrieval to
obtain sharp images of micro-and nanoscale objects, with widespread applications in …

A simple coherent-imaging method due to Paganin et al is widely employed for phase–
amplitude reconstruction of samples using a single paraxial x-ray propagation-based phase …

In-line phase-contrast X-ray imaging provides images where both absorption and refraction
contribute. For quantitative analysis of these images, the phase needs to be retrieved …

Phase sensitive x-ray imaging extends standard x-ray microscopy techniques by offering up
to a thousand times higher sensitivity than absorption-based techniques. If an object is …

In this paper we introduce a new reconstruction algorithm for X-ray differential phase-
contrast Imaging (DPCI). Our approach is based on 1) a variational formulation with a …