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Multimodal Phase-Based X-Ray Microtomography with Nonmicrofocal Laboratory Sources

Vittoria, Fabio A.; Endrizzi, Marco; Kallon, Gibril K.; Hagen, Charlotte K.; Iacoviello, Francesco; De Coppi, Paolo; Olivo, Alessandro


We present an alternative laboratory implementation of x-ray phase-contrast tomography through a beam-tracking approach. A nonmicrofocal rotating anode source is combined with a high-resolution detector and an absorbing mask to obtain attenuation, phase, and ultra-small-angle scattering tomograms of different specimens. A theoretical model is also presented which justifies the implementation of beam tracking with polychromatic sources and provides quantitative values of attenuation and phase, under the assumption of low sample attenuation. The method is tested on a variety of samples featuring both large and small x-ray attenuation, phase, and scattering signals. The complementarity of the contrast channels can enable subtle distinctions between materials and tissue types, which appear indistinguishable to conventional tomography scanners.

Verlagsausgabe §
DOI: 10.5445/IR/1000137149
Veröffentlicht am 02.09.2021
DOI: 10.1103/PhysRevApplied.8.064009
Zitationen: 11
Web of Science
Zitationen: 10
Zitationen: 14
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Beschleunigerphysik und Technologie (IBPT)
Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2331-7019
KITopen-ID: 1000137149
HGF-Programm 54.01.01 (POF III, LK 01) ps- und fs-Strahlen
Erschienen in Physical review applied
Verlag American Physical Society (APS)
Band 8
Heft 6
Seiten Art.-Nr.: 064009
Vorab online veröffentlicht am 08.12.2017
Nachgewiesen in Scopus
Web of Science
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