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arXiv · 2211.01375

High-speed processing of X-ray wavefront marking data with the Unified Modulated Pattern Analysis (UMPA) model

Fabio De Marco·Sara Savatović·Ronan Smith·Vittorio Di Trapani·Marco Margini·Ginevra Lautizi·Pierre Thibault
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Abstract

Wavefront-marking X-ray imaging techniques use e.g., sandpaper or a grating to generate intensity fluctuations, and analyze their distortion by the sample in order to retrieve attenuation, phase-contrast, and dark-field information. Phase contrast yields an improved visibility of soft-tissue specimens, while dark-field reveals small-angle scatter from sub-resolution structures. Both have found many biomedical and engineering applications. The previously developed Unified Modulated Pattern Analysis (UMPA) model extracts these modalities from wavefront-marking data. We here present a new UMPA implementation, capable of rapidly processing large datasets and featuring capabilities to greatly extend the field of view. We also discuss possible artifacts and additional new features.

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Fabio De Marco, Sara Savatović, Ronan Smith, Vittorio Di Trapani, Marco Margini, Ginevra Lautizi, Pierre Thibault. 2022-11-02. High-speed processing of X-ray wavefront marking data with the Unified Modulated Pattern Analysis (UMPA) model. https://doi.org/10.1364/oe.474794

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