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

ABSTRACT: 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 conventional "bright-field" images, such as attenuation and phase-contrast modalities. This x-ray dark-field signal is produced by unresolved microstructures scattering the x-ray beam resulting in localised image blur. Dark-field retrieval techniques extract this blur to reconstruct a dark-field image. Unfortunately, the presence of non-dark-field blur such as source-size blur or the detector point-spread-function can affect the dark-field retrieval as they also blur the experimental image. In addition, dark-field images can be degraded by the artefacts induced by large intensity gradients from attenuation and propag

SUBMITTER: Croughan MK 

PROVIDER: S-EPMC11294358 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature