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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 1691–1698

A simplified approach for computed tomography with an X-ray grating interferometer

P. C. Diemoz, P. Coan, I. Zanette, A. Bravin, S. Lang, C. Glaser, and T. Weitkamp  »View Author Affiliations

Optics Express, Vol. 19, Issue 3, pp. 1691-1698 (2011)

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We present a simplified acquisition and processing method for X-ray grating interferometry computed tomography (CT). The proposed approach eliminates the need to scan the gratings, thus allowing for a faster CT acquisition compared to methods presently in use. The contrast in the reconstructed images can be expressed as a linear combination of the absorption and refraction within the sample. Experimental images of a test phantom made of known materials and a human bone-cartilage sample prove the correctness of the method and show very good agreement with the theory. The here proposed approach might be highly interesting in many fields where a reduced imaging acquisition time is requested and/or where the radiation dose delivered to the sample has to be kept low, such as, for example, in in-vivo imaging.

© 2011 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(110.7440) Imaging systems : X-ray imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
X-ray Optics

Original Manuscript: September 23, 2010
Revised Manuscript: October 26, 2010
Manuscript Accepted: October 27, 2010
Published: January 14, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

P. C. Diemoz, P. Coan, I. Zanette, A. Bravin, S. Lang, C. Glaser, and T. Weitkamp, "A simplified approach for computed tomography with an X-ray grating interferometer," Opt. Express 19, 1691-1698 (2011)

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