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Proceedings Paper

Simulation of the real-time optical tomography reconstruction using photon trajectory application to the case of strongly scattering media
Author(s): Vladimir V. Lyubimov; Olga V. Kravtsenyuk; Oleg V. Lyamtsev; Evgeny P. Mironov; Alexander G. Murzin; Peter L. Volegov; Lyudmila M. Yavorskaya
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Paper Abstract

The abilities of the Photon Mean Path (PMP) approach being applied to laser tomography of strongly scattering (biological) objects were under study. The study was aimed to evaluate the computing speed and reconstruction accuracy of the PMP algorithm for the case of a cylindrical scattering body containing absorptive macroinhomogeneity. The simulation of the tomography reconstruction was carried out in two stages. At the first stage the diffusion equation for several locations of the instantaneous point source at the surface of the cylindrical body was solved by the FEM. At the second stage the 2D reconstruction of the absorption in the object was performed with the use of the earlier received equation for the shadow in terms of the integral along the PMP and of the polygonal approximation of the PMP shape. The simple algebraic algorithm was used for the reconstruction. The 1 ms computing time was obtained instead of 1 hour one with multi-iteration algorithms. The most attention was concentrated no the study of the dependence of the reconstruction fidelity on the time-delay of the receiving instant. The additional possibility was shown to improve the spatial resolution by known methods of image restoration.

Paper Details

Date Published: 30 December 1998
PDF: 10 pages
Proc. SPIE 3566, Photon Propagation in Tissues IV, (30 December 1998); doi: 10.1117/12.334376
Show Author Affiliations
Vladimir V. Lyubimov, S.I. Vavilov State Optical Institute (Russia)
Olga V. Kravtsenyuk, S.I. Vavilov State Optical Institute (Russia)
Oleg V. Lyamtsev, S.I. Vavilov State Optical Institute (Russia)
Evgeny P. Mironov, S.I. Vavilov State Optical Institute (Russia)
Alexander G. Murzin, S.I. Vavilov State Optical Institute (Russia)
Peter L. Volegov, Federal Nuclear Ctr./VNIITPh (Russia)
Lyudmila M. Yavorskaya, Federal Nuclear Ctr./VNIITPh (Russia)

Published in SPIE Proceedings Vol. 3566:
Photon Propagation in Tissues IV
David A. Benaron M.D.; Britton Chance; Marco Ferrari; Matthias Kohl-Bareis, Editor(s)

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