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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 13 — May. 1, 2001
  • pp: 2206–2215

Three-dimensional unconstrained and constrained image-reconstruction techniques applied to fluorescence, frequency-domain photon migration

Ranadhir Roy and Eva M. Sevick-Muraca  »View Author Affiliations


Applied Optics, Vol. 40, Issue 13, pp. 2206-2215 (2001)
http://dx.doi.org/10.1364/AO.40.002206


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Abstract

The development of near-infrared (NIR) optical imaging for biomedical optical imaging is hampered by the computational intensiveness of large-scale three-dimensional (3-D) image reconstruction and the potential lack of endogenous contrast for detection of relevant tissue features. In this contribution the inverse optical imaging problem is formulated in three dimensions in a noncompressive geometry as a simple-bound constrained minimization problem in order to recover the interior fluorescence properties of exogenous contrast agent from frequency-domain photon migration measurements at the boundary. The solution of the forward optical diffusion problem for the frustum shape containing fluorescence inclusions of 10:1 contrast is accomplished by use of the Galerkin finite-element formulation. The inverse approach employs the truncated Newton method with trust region and a modification of automatic reverse differentiation to speed the computation of the optimization problem. The image-reconstruction results confirm that the constrained minimization may offer a more logical approach for the 3-D optical imaging problem than unconstrained optimization.

© 2001 Optical Society of America

OCIS Codes
(110.6960) Imaging systems : Tomography

History
Original Manuscript: August 7, 2000
Revised Manuscript: January 2, 2001
Published: May 1, 2001

Citation
Ranadhir Roy and Eva M. Sevick-Muraca, "Three-dimensional unconstrained and constrained image-reconstruction techniques applied to fluorescence, frequency-domain photon migration," Appl. Opt. 40, 2206-2215 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-13-2206

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