Algebraic reconstruction techniques for spectral reconstruction in diffuse optical tomography
Applied Optics, Vol. 47, Issue 34, pp. 6392-6403 (2008)
http://dx.doi.org/10.1364/AO.47.006392
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Abstract
Reconstruction in diffuse optical tomography (DOT) necessitates solving the diffusion equation, which is nonlinear with respect to the parameters that have to be reconstructed. Currently applied solving methods are based on the linearization of the equation. For spectral three-dimensional reconstruction, the emerging equation system is too large for direct inversion, but the application of iterative methods is feasible. Computational effort and speed of convergence of these iterative methods are crucial since they determine the computation time of the reconstruction. In this paper, the iterative methods algebraic reconstruction technique (ART) and conjugated gradients (CGs) as well as a new modified ART method are investigated for spectral DOT reconstruction. The aim of the modified ART scheme is to speed up the convergence by considering the specific conditions of spectral reconstruction. As a result, it converges much faster to favorable results than conventional ART and CG methods.
© 2008 Optical Society of America
OCIS Codes
(170.3830) Medical optics and biotechnology : Mammography
(170.6960) Medical optics and biotechnology : Tomography
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: June 25, 2008
Revised Manuscript: October 8, 2008
Manuscript Accepted: October 21, 2008
Published: November 24, 2008
Virtual Issues
Vol. 4, Iss. 2 Virtual Journal for Biomedical Optics
Citation
Bernhard Brendel, Ronny Ziegler, and Tim Nielsen, "Algebraic reconstruction techniques for spectral reconstruction in diffuse optical tomography," Appl. Opt. 47, 6392-6403 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-47-34-6392
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