activity
20212026
most citedTomographic phase and attenuation extraction for a sample composed of unknown materials using X-ray propagation-based phase-contrast imaging

15 citations · 19 across the 9 of their papers we have counts for

collaborators

9 papers

physics.med-ph2026

X-ray dark-field imaging from intensity flow: A Fokker-Planck approach to grating interferometry

Samantha J. Alloo, Florian Schaff, Regine Gradl +3

Grating interferometry is a promising diagnostic technique that enables simultaneous acquisition of three complementary, synergistic X-ray images: transmission, differential phase,…

physics.med-ph2025★ 1 cited

Quantitative Stain Mapping in X-ray Virtual Histology

Dominik John, David M. Paganin, Marie-Christine Zdora +14

Virtual histology is an emerging field in biomedicine that enables three-dimensional tissue visualization using X-ray micro-computed tomography. However, the method still lacks the…

physics.optics2025

Demonstrating a family of X-ray dark-field retrieval approaches on a common set of samples

Samantha J. Alloo, Ying Ying How, Jannis N. Ahlers +3

Sensitive to scattering from unresolved sample structures, the dark-field channel in full-field X-ray imaging provides complementary information to that offered by conventional att…

physics.med-ph2025

Low-exposure, high-quality multimodal speckle X-ray imaging via an intrinsic gradient-flow approach

Jayvan Liu, Samantha J. Alloo, Max Langer +1

We present a new approach for retrieving dark-field, phase shift, and attenuation images from speckle-based X-ray imaging data. Speckle-based X-ray imaging (SBXI) exploits sample-i…

physics.med-ph2025★ 3 cited

High-energy X-ray phase-contrast CT of an adult human chest phantom

Jannis N. Ahlers, Lorenzo D'Amico, Henriette Bast +15

Propagation-based phase-contrast X-ray imaging is a promising technique for in~vivo medical imaging, offering lower radiation doses than traditional attenuation-based imaging. Prev…

physics.optics2024

Stabilizing Laplacian Inversion in Fokker-Planck Image Retrieval using the Transport-of-Intensity Equation

Samantha J Alloo, Kaye S Morgan

X-ray attenuation, phase, and dark-field images provide complementary information. Different experimental techniques can capture these contrast mechanisms, and the corresponding im…

physics.optics2024

Separating edges from microstructure in X-ray dark-field imaging: Evolving and devolving perspectives via the X-ray Fokker-Planck equation

Samantha J. Alloo, David M. Paganin, Michelle K. Croughan +3

A key contribution to X-ray dark-field (XDF) is X-ray diffusion by sample structures smaller than the imaging system's spatial resolution. However, some XDF techniques report that…

physics.med-ph2024

Correcting directional dark-field x-ray imaging artefacts using position-dependent image deblurring and attenuation removal

Michelle K Croughan, David M Paganin, Samantha J Alloo +4

In recent years, a novel x-ray imaging modality has emerged that reveals unresolved sample microstructure via a "dark-field image", which provides complementary information to conv…

physics.med-ph2021★ 15 cited

Tomographic phase and attenuation extraction for a sample composed of unknown materials using X-ray propagation-based phase-contrast imaging

Samantha J. Alloo, David M. Paganin, Kaye S. Morgan +9

Propagation-based phase-contrast X-ray imaging (PB-PCXI) generates image contrast by utilizing sample-imposed phase-shifts. This has proven useful when imaging weakly-attenuating s…