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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 9 — Oct. 2, 2013

A three-image algorithm for hard x-ray grating interferometry

Daniele Pelliccia, Luigi Rigon, Fulvia Arfelli, Ralf-Hendrik Menk, Inna Bukreeva, and Alessia Cedola  »View Author Affiliations

Optics Express, Vol. 21, Issue 16, pp. 19401-19411 (2013)

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A three-image method to extract absorption, refraction and scattering information for hard x-ray grating interferometry is presented. The method comprises a post-processing approach alternative to the conventional phase stepping procedure and is inspired by a similar three-image technique developed for analyzer-based x-ray imaging. Results obtained with this algorithm are quantitatively comparable with phase-stepping. This method can be further extended to samples with negligible scattering, where only two images are needed to separate absorption and refraction signal. Thanks to the limited number of images required, this technique is a viable route to bio-compatible imaging with x-ray grating interferometer. In addition our method elucidates and strengthens the formal and practical analogies between grating interferometry and the (non-interferometric) diffraction enhanced imaging technique.

© 2013 OSA

OCIS Codes
(100.0100) Image processing : Image processing
(340.7440) X-ray optics : X-ray imaging
(340.7450) X-ray optics : X-ray interferometry

ToC Category:
X-ray Optics

Original Manuscript: July 5, 2013
Revised Manuscript: August 1, 2013
Manuscript Accepted: August 1, 2013
Published: August 8, 2013

Virtual Issues
Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics

Daniele Pelliccia, Luigi Rigon, Fulvia Arfelli, Ralf-Hendrik Menk, Inna Bukreeva, and Alessia Cedola, "A three-image algorithm for hard x-ray grating interferometry," Opt. Express 21, 19401-19411 (2013)

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