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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 11 — Apr. 10, 2005
  • pp: 2115–2139

Improved accuracy of reconstructed diffuse optical tomographic images by means of spatial deconvolution: two-dimensional quantitative characterization

Yong Xu, Harry L. Graber, Yaling Pei, and Randall L. Barbour  »View Author Affiliations


Applied Optics, Vol. 44, Issue 11, pp. 2115-2139 (2005)
http://dx.doi.org/10.1364/AO.44.002115


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Abstract

Systematic characterization studies are presented, relating to a previously reported spatial deconvolution operation that seeks to compensate for the information-blurring property of first-order perturbation algorithms for diffuse optical tomography (DOT) image reconstruction. In simulation results that are presented, this deconvolution operation has been applied to two-dimensional DOT images reconstructed by solving a first-order perturbation equation. Under study was the effect on algorithm performance of control parameters in the measurement (number and spatial distribution of sources and detectors, presence of noise, and presence of systematic error), target (medium shape; and number, location, size, and contrast of inclusions), and computational (number of finite-element-method mesh nodes, length of filter-generating linear system, among others) parameter spaces associated with computation and the use of the deconvolution operators. Substantial improvements in reconstructed image quality, in terms of recovered inclusion location, size, and contrast, are found in all cases. A finding of practical importance is that the method is robust to appreciable differences between the optical coefficients of the media used for filter generation and those of the target media to which the filters are subsequently applied.

© 2005 Optical Society of America

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.6890) Image processing : Three-dimensional image processing
(100.6950) Image processing : Tomographic image processing
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3880) Medical optics and biotechnology : Medical and biological imaging

History
Original Manuscript: July 21, 2004
Revised Manuscript: November 10, 2004
Manuscript Accepted: November 11, 2004
Published: April 10, 2005

Citation
Yong Xu, Harry L. Graber, Yaling Pei, and Randall L. Barbour, "Improved accuracy of reconstructed diffuse optical tomographic images by means of spatial deconvolution: two-dimensional quantitative characterization," Appl. Opt. 44, 2115-2139 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-11-2115


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