This paper presents an extension of phase retrieval algorithms for near-field X-ray
(propagation) imaging to three dimensions, enhancing the quality of the reconstruction by …

We derive a propagator based formalism for optimizing phase contrast imaging in laboratory
setups as well as in synchrotron setups. We confirm based on five different setups the well …

Propagation-based phase-contrast X-ray computed tomography is a valuable tool for high-
resolution visualization of biological samples, giving distinct improvements in terms of …

The following article describes a method for 3D reconstruction of multi-material objects
based on propagation-based X-ray phase-contrast tomography (PB-CT) with phase retrieval …

X-ray in-line phase contrast tomography holds great promise for the quantitative analysis of
soft materials. However, its applications have been limited, so far, by the fact that direct …

We investigate the quantitative accuracy and noise sensitivity of reconstruction of the 3D
distribution of complex refractive index, n (r)= 1− δ (r)+ i β (r)⁠, in samples containing …

The first Born and Rytov approximations of scattering theory are introduced in their less
familiar near-field versions. Two algorithms for phase retrieval based on these …

We derive a Fourier formulation of coded-aperture x-ray phase-contrast imaging, based on
the wave theory of optics in the Fresnel approximation. We use this model to develop a …

The refractive-index gradient vector field approach establishes a connection between a
tomographic data set of differential phase contrast images and the distribution of the partial …

Phase-contrast tomography (PCT) allows three-dimensional imaging of objects that display
insufficient contrast for conventional absorption-based tomography. We prove that PCT is …