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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.

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.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1088/1742-6596/849/1/012035
ISSN: 1742-6588, 1742-6596
URN: urn:nbn:de:swb:90-722247
KITopen ID: 1000072224
Erschienen in Journal of physics / Conference Series
Band 849
Heft 1
Seiten Art.Nr.: 012035
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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