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Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 11 — Aug. 25, 2010

Single-shot x-ray differential phase-contrast and diffraction imaging using two-dimensional transmission gratings

Harold H. Wen, Eric E. Bennett, Rael Kopace, Ashley F. Stein, and Vinay Pai  »View Author Affiliations

Optics Letters, Vol. 35, Issue 12, pp. 1932-1934 (2010)

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We describe an x-ray differential phase-contrast imaging method based on two-dimensional transmission gratings that are directly resolved by an x-ray camera. X-ray refraction and diffraction in the sample lead to variations of the positions and amplitudes of the grating fringes on the camera. These effects can be quantified through spatial harmonic analysis. The use of 2D gratings allows differential phase contrast in several directions to be obtained from a single image. When compared to previous grating-based interferometry methods, this approach obviates the need for multiple exposures and separate measurements for different directions and thereby accelerates imaging speed.

OCIS Codes
(170.7440) Medical optics and biotechnology : X-ray imaging
(340.7430) X-ray optics : X-ray coded apertures
(110.2650) Imaging systems : Fringe analysis

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: February 17, 2010
Revised Manuscript: April 13, 2010
Manuscript Accepted: April 25, 2010
Published: June 3, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Harold H. Wen, Eric E. Bennett, Rael Kopace, Ashley F. Stein, and Vinay Pai, "Single-shot x-ray differential phase-contrast and diffraction imaging using two-dimensional transmission gratings," Opt. Lett. 35, 1932-1934 (2010)

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