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Comparison of laboratory grating-based and speckle-tracking x-ray phase-contrast imaging

Romell, J.; Zhou, T.; Zdora, M.; Sala, S.; Koch, F. J.; Hertz, H. M.; Burvall, A.

Abstract:
Phase-contrast imaging with x-rays is a developing field for imaging weakly absorbing materials. In this work, two phase-contrast imaging methods, grating- and speckle-based imaging, that measure the derivative of the phase shift, have been implemented with a laboratory source and compared experimentally. It was found that for the same dose conditions, the speckle-tracking differential phase-contrast images have considerably higher contrast-to-noise ratio than the grating-based images, but at the cost of lower resolution. Grating-based imaging performs better in terms of resolution, but would require longer exposure times, mainly due to absorption in the grating interferometer.

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Volltext §
DOI: 10.5445/IR/1000072224
Originalveröffentlichung
DOI: 10.1088/1742-6596/849/1/012035
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
urn:nbn:de:swb:90-722247
KITopen-ID: 1000072224
HGF-Programm 43.23.02 (POF III, LK 01)
Erschienen in Journal of physics / Conference Series
Band 849
Heft 1
Seiten Art.Nr.: 012035
Nachgewiesen in Scopus
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