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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 8 — Aug. 26, 2011

Reduction of phase artifacts in differential phase contrast computed tomography

Iwan Jerjen, Vincent Revol, Philipp Schuetz, Christian Kottler, Rolf Kaufmann, Thomas Luethi, Konstantins Jefimovs, Claus Urban, and Urs Sennhauser  »View Author Affiliations

Optics Express, Vol. 19, Issue 14, pp. 13604-13611 (2011)

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X-ray differential phase contrast computed tomography (DPC CT) with a Talbot-Lau interferometer setup allows visualizing the three-dimensional distribution of the refractive index by measuring the shifts of an interference pattern due to phase variations of the X-ray beam. Unfortunately, severe reconstruction artifacts appear in the presence of differential phase wrapping and clipping. In this paper, we propose to use the attenuation contrast, which is obtained from the same measurement, for correcting the DPC signal. Using the example of a DPC CT measurement with pronounced phase artifacts, we will discuss the efficiency of our phase artifact correction method.

© 2011 OSA

OCIS Codes
(110.6760) Imaging systems : Talbot and self-imaging effects
(110.6960) Imaging systems : Tomography
(110.7440) Imaging systems : X-ray imaging
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(110.5086) Imaging systems : Phase unwrapping

ToC Category:
Imaging Systems

Original Manuscript: May 4, 2011
Revised Manuscript: June 16, 2011
Manuscript Accepted: June 16, 2011
Published: June 29, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Iwan Jerjen, Vincent Revol, Philipp Schuetz, Christian Kottler, Rolf Kaufmann, Thomas Luethi, Konstantins Jefimovs, Claus Urban, and Urs Sennhauser, "Reduction of phase artifacts in differential phase contrast computed tomography," Opt. Express 19, 13604-13611 (2011)

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