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Super-resolution x-ray phase-contrast and dark-field imaging with a single 2D grating and electromagnetic source stepping

Rix, Kristian R; Dreier, Till; Shen, Tao; Bech, Martin

Abstract:
Here we report a method for increased resolution of single exposure three modality x-ray images using super-resolution. The three x-ray image modalities are absorption-, differential phase-contrast-, and dark-field-images. To create super-resolution, a non-mechanically movable micro-focus x-ray source is used. A series of almost identical x-ray projection images is obtained while the point source is translated in a two-dimensional grid pattern. The three image modalities are extracted from fourier space using spatial harmonic analysis, also known as the single-shot method. Using super-resolution on the low-resolution series of the three modalities separately results in high-resolution images for the modalities. This approach allows to compensate for the inherent loss in resolution caused by the single-shot method without increasing the need for stability or algorithms accounting for possible motion.

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Verlagsausgabe §
DOI: 10.5445/IR/1000129516
Veröffentlicht am 09.02.2021
Originalveröffentlichung
DOI: 10.1088/1361-6560/ab2ff5
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1361-6560
KITopen-ID: 1000129516
Erschienen in Physics in medicine and biology
Verlag IOP Publishing
Band 64
Heft 16
Seiten Art. Nr.: 165009
Vorab online veröffentlicht am 14.08.2019
Schlagwörter x-ray imaging, dark field, differential phase contrast, movable micro focus x-ray source, single exposure imaging, super resolution
Nachgewiesen in Scopus
Web of Science
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