X-ray phase-contrast imaging and tomography make use of the refraction of X-rays by the
sample in image formation. This provides considerable additional information in the image …

We report here on recent developments and advances in pore-scale X-ray tomographic
imaging of subsurface porous media. Our particular focus is on immiscible multi-phase fluid …

We demonstrate interface-specific propagation-based x-ray phase retrieval tomography of
the thorax and brain of small animals. Our method utilizes a single propagation-based x-ray …

Scientists and clinicians have a keen interest in studying not just the structure of
physiological systems, but their motion also, or more generally their form and function. This …

An x-ray velocimetry technique is described which provides three components of velocity
measurement in three dimensional space. Current x-ray velocimetry techniques, which use …

We develop and implement a compressive reconstruction method for tomographic recovery
of refractive index distribution for weakly attenuating objects in a microfocus x-ray system …

We present “dynamic tomography” algorithms that allow for the high-resolution, time-
resolved imaging of dynamic (ie, continuously time evolving) complex systems at existing x …

Propagation-based X-ray phase-contrast tomography (PCT) seeks to reconstruct information
regarding the complex-valued refractive index distribution of an object. In many applications …

The challenge of computed tomography is to reconstruct high-quality images from few-view
projections. Using a prior guidance image, guided image filtering smoothes images while …

The Radon transform and its inversion are the mathematical keys that enable tomography.
Radon transforms are defined for continuous objects with continuous projections at all …