The combination of X-ray 'propagation-based' and 'analyzer-based' phase-contrast imaging with a perfect crystal-analyzer is investigated. The image pattern produced using this 'hybrid' imaging technique presents peculiar features that can be interpreted as a mixture of the two independent phase-contrast signals. A quantitative analysis has been performed in terms of signal-to-noise ratio for the three techniques considered in this paper. Results show that in the 'hybrid imaging' technique this parameter has a weaker dependence on the angular alignment of the crystal analyser with respect to the 'analyser-based' imaging. This pioneering experiment indicates that this hybrid imaging technique might permit simultaneous advantage of the specific features of the two imaging methods to be taken.

Coan, P., Pagot, E., Fiedler, S., Cloetens, P., Baruchel, J., Bravin, A. (2005). Phase-contrast X-ray imaging combining free space propagation and bragg diffraction. JOURNAL OF SYNCHROTRON RADIATION, 12(2), 241-245 [10.1107/S0909049504028444].

Phase-contrast X-ray imaging combining free space propagation and bragg diffraction

Bravin A
Ultimo
Membro del Collaboration Group
2005

Abstract

The combination of X-ray 'propagation-based' and 'analyzer-based' phase-contrast imaging with a perfect crystal-analyzer is investigated. The image pattern produced using this 'hybrid' imaging technique presents peculiar features that can be interpreted as a mixture of the two independent phase-contrast signals. A quantitative analysis has been performed in terms of signal-to-noise ratio for the three techniques considered in this paper. Results show that in the 'hybrid imaging' technique this parameter has a weaker dependence on the angular alignment of the crystal analyser with respect to the 'analyser-based' imaging. This pioneering experiment indicates that this hybrid imaging technique might permit simultaneous advantage of the specific features of the two imaging methods to be taken.
Articolo in rivista - Articolo scientifico
Analyzers; Fresnel diffraction; Phase contrast; X-ray imaging; X-ray source coherence;
English
241
245
5
Coan, P., Pagot, E., Fiedler, S., Cloetens, P., Baruchel, J., Bravin, A. (2005). Phase-contrast X-ray imaging combining free space propagation and bragg diffraction. JOURNAL OF SYNCHROTRON RADIATION, 12(2), 241-245 [10.1107/S0909049504028444].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/349028
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