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Proceedings Paper

Transillumination imaging performance using time domain data
Author(s): Matthias Orlt; M. Walzel; Regina Model
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Paper Abstract

Light propagation in highly scattering media can be numerically simulated by solving the diffusion equation by the finite element method (FEM). Employing an iterative algorithm, the FEM solution of the forward problem is applied to the inverse imaging problem. Good test results were previously achieved when absorbers were searched in different objects. Now the reconstruction of scattering is also taken into account. Simulated measurement data are used to test and evaluate the method at various objects with tissue-like properties. Resulting problems are very ill posed. The algorithm is specially adapted to the illposedness of the problem. Improvements in reconstruction results can be achieved in two ways, first by adapting the detector arrangements and, secondly, by using a regularization strategy. The effectiveness of these methods is demonstrated by instructive examples.

Paper Details

Date Published: 18 December 1995
PDF: 12 pages
Proc. SPIE 2626, Photon Propagation in Tissues, (18 December 1995); doi: 10.1117/12.228687
Show Author Affiliations
Matthias Orlt, Physikalisch-Technische Bundesanstalt (Germany)
M. Walzel, Physikalisch-Technische Bundesanstalt (Germany)
Regina Model, Physikalisch-Technische Bundesanstalt (Germany)


Published in SPIE Proceedings Vol. 2626:
Photon Propagation in Tissues
Britton Chance; David T. Delpy; Gerhard J. Mueller, Editor(s)

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