# X-ray phase-contrast radiography and tomography with a multi-aperture analyser

## TL;DR

This paper introduces a multi-aperture analyser setup for X-ray phase-contrast imaging and tomography, enabling quantitative 3D reconstructions and simultaneous retrieval of absorption, phase, and scattering with high sensitivity.

## Contribution

The work presents a novel multi-aperture analyser configuration that allows for quantitative phase-contrast imaging and tomography, including simultaneous measurement of absorption, phase, and scattering.

## Key findings

- Successful tomographic reconstruction using the method.
- Reliable retrieval of absorption and phase even with strong scatterers.
- High sensitivity and dynamic range demonstrated on custom phantoms.

## Abstract

We present a multi-aperture analyser set-up for performing X-ray phase contrast imaging in planar and three-dimensional modalities. A multi-slice representation of the sample is used to establish a quantitative relation between projection images and the corresponding three-dimensional distributions, leading to successful tomographic reconstruction. Sample absorption, phase and scattering are retrieved from the measurement of five intensity projections. The method is experimentally tested on custom built phantoms with synchrotron radiation: sample absorption and phase can be reliably retrieved also in combination with strong scatterers, simultaneously offering high sensitivity and dynamic range.