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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 10 — Apr. 1, 2009
  • pp: D208–D217

CT imaging of diffuse medium by time-resolved measurement of backscattered light

Takeshi Namita, Yuji Kato, and Koichi Shimizu  »View Author Affiliations


Applied Optics, Vol. 48, Issue 10, pp. D208-D217 (2009)
http://dx.doi.org/10.1364/AO.48.00D208


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Abstract

Backscattered light was used to reconstruct cross-sectional images of absorption distributions in diffuse media. For efficient and accurate reconstruction, the inverse problem was solved for one dimension, thereby yielding the absorption distribution in a depth direction. A cross-sectional image or three- dimensional structure is reconstructed by shifting a source–detector pair along the object surface. The object is divided into imaginary layers to solve the inverse problem. This solution’s accuracy is further improved by solving the problem for two groups of layers successively instead of solving for all layers simultaneously. The technique’s effectiveness was verified using solid phantoms and biological tissues.

© 2009 Optical Society of America

OCIS Codes
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(170.6960) Medical optics and biotechnology : Tomography
(170.7050) Medical optics and biotechnology : Turbid media

History
Original Manuscript: August 8, 2008
Revised Manuscript: January 20, 2009
Manuscript Accepted: January 25, 2009
Published: March 2, 2009

Virtual Issues
Vol. 4, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Takeshi Namita, Yuji Kato, and Koichi Shimizu, "CT imaging of diffuse medium by time-resolved measurement of backscattered light," Appl. Opt. 48, D208-D217 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-10-D208

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