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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 8 — Aug. 2, 2012

X-ray in-line phase tomography of multimaterial objects

Max Langer, Peter Cloetens, Alexandra Pacureanu, and Françoise Peyrin  »View Author Affiliations

Optics Letters, Vol. 37, Issue 11, pp. 2151-2153 (2012)

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We present a method for phase retrieval from x-ray Fresnel diffraction patterns for multimaterial objects. Previously, homogeneous object assumptions have been used and have been introduced in the Radon domain. Here, we apply prior knowledge in the object domain, which permits the introduction of multiple materials. This is achieved first by a tomographic reconstruction of an attenuation scan and then introduction of the prior followed by a forward projection step to yield the a priori phase maps. The method is applied to the reconstruction of an object of known composition consisting of both soft and hard materials and is shown to perform better than previously proposed algorithms.

© 2012 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(100.6950) Image processing : Tomographic image processing
(110.7440) Imaging systems : X-ray imaging
(180.7460) Microscopy : X-ray microscopy
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

Original Manuscript: December 7, 2011
Revised Manuscript: February 20, 2012
Manuscript Accepted: March 8, 2012
Published: June 1, 2012

Virtual Issues
Vol. 7, Iss. 8 Virtual Journal for Biomedical Optics

Max Langer, Peter Cloetens, Alexandra Pacureanu, and Françoise Peyrin, "X-ray in-line phase tomography of multimaterial objects," Opt. Lett. 37, 2151-2153 (2012)

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