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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 34 — Dec. 2, 2002
  • pp: 7346–7358

Semi-three-dimensional algorithm for time-resolved diffuse optical tomography by use of the generalized pulse spectrum technique

Feng Gao, Yukari Tanikawa, Huijuan Zhao, and Yukio Yamada  »View Author Affiliations


Applied Optics, Vol. 41, Issue 34, pp. 7346-7358 (2002)
http://dx.doi.org/10.1364/AO.41.007346


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Abstract

Although a full three-dimensional (3-D) reconstruction with both 3-D forward and inverse models provides the optimal solution for diffuse optical tomography (DOT), because of the 3-D nature of photon diffusion in tissue, it is computationally costly for both memory requirement and execution time in a conventional computing environment. Thus in practice there is motivation to develop an image reconstruction algorithm with dimensional reduction based on some modeling approximations. Here we have implemented a semi-3-D modified generalized pulse spectrum technique for time-resolved DOT, where a two-dimensional (2-D) distribution of optical properties is approximately assumed, while we retain 3-D distribution of photon migration in tissue. We have validated the proposed algorithm by reconstructing 3-D structural test objects from both numerically simulated and experimental data. We demonstrate our algorithm by comparing it with the calibrated 2-D reconstruction that is in widespread use as a shortcut to 3-D imaging and proving that the semi-3-D algorithm outperforms the calibrated 2-D algorithm.

© 2002 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(170.6960) Medical optics and biotechnology : Tomography

History
Original Manuscript: February 25, 2002
Revised Manuscript: June 12, 2002
Published: December 1, 2002

Citation
Feng Gao, Yukari Tanikawa, Huijuan Zhao, and Yukio Yamada, "Semi-three-dimensional algorithm for time-resolved diffuse optical tomography by use of the generalized pulse spectrum technique," Appl. Opt. 41, 7346-7358 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-34-7346

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