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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3551–3553

Two-dimensional gratings-based phase-contrast imaging using a conventional x-ray tube

Genta Sato, Takeshi Kondoh, Hidenosuke Itoh, Soichiro Handa, Kimiaki Yamaguchi, Takashi Nakamura, Kentaro Nagai, Chidane Ouchi, Takayuki Teshima, Yutaka Setomoto, and Toru Den  »View Author Affiliations


Optics Letters, Vol. 36, Issue 18, pp. 3551-3553 (2011)
http://dx.doi.org/10.1364/OL.36.003551


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Abstract

A Talbot–Lau interferometer using two-dimensional gratings and a conventional x-ray tube has been used to investigate a phase-contrast imaging technique that is sensitive to phase gradients in two orthogonal directions. Fourier analysis of Moiré fringe patterns was introduced to obtain differential phase images and scattering images from a single exposure. Two-dimensional structures of plastic phantoms and characteristic features of soft tissue were clearly obtained at 17.5 keV . The phase-stepping technique was also examined to investigate the spatial resolution of different phase retrieval methods. In the presented setup we found that the choice of phase retrieval method made little difference in image blur, and a large effective source size was found to give a high intensity in the image plane.

© 2011 Optical Society of America

OCIS Codes
(110.6760) Imaging systems : Talbot and self-imaging effects
(170.7440) Medical optics and biotechnology : X-ray imaging
(340.7450) X-ray optics : X-ray interferometry

ToC Category:
X-ray Optics

History
Original Manuscript: June 23, 2011
Revised Manuscript: July 29, 2011
Manuscript Accepted: August 3, 2011
Published: September 8, 2011

Virtual Issues
Vol. 6, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Genta Sato, Takeshi Kondoh, Hidenosuke Itoh, Soichiro Handa, Kimiaki Yamaguchi, Takashi Nakamura, Kentaro Nagai, Chidane Ouchi, Takayuki Teshima, Yutaka Setomoto, and Toru Den, "Two-dimensional gratings-based phase-contrast imaging using a conventional x-ray tube," Opt. Lett. 36, 3551-3553 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3551

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