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Proceedings Paper

Measurements of time-resolved transmittances through cylindrical solid phantoms: comparison with 2D and 3D FEM simulations
Author(s): Sergei G. Proskurin; Shuichi Takahashi; Ivo W. Kwee; Yukari Tanikawa; Yukio Yamada
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Paper Abstract

Experimentally acquired time-resolved and continuous-wave diffuse transmittances of near-infrared light through cylindrical solid phantoms are presented. Homogeneous and inhomogeneous tissue-like phantoms (68 mm diameter, epoxy resin) were used. The transmittances were acquired at 18 degree intervals around the phantoms. Experimental results are compared with results of two dimensional and three dimensional finite-element simulations. The influence of absorbing boundaries on the shape of time-resolved and continuous-wave transmittances has been investigated for slab and cylindrical geometry. Analytical solutions of the photon diffusion equation with reflecting and absorbing boundary conditions were applied to estimate the optical properties of the material. A new index, time-resolved homogeneity index, is introduced for quick and simple inhomogeneity detection prior to image reconstruction.

Paper Details

Date Published: 18 August 1997
PDF: 11 pages
Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); doi: 10.1117/12.280253
Show Author Affiliations
Sergei G. Proskurin, Mechanical Engineering Lab./AIST (Japan)
Shuichi Takahashi, Mechanical Engineering Lab./AIST (Japan)
Ivo W. Kwee, Mechanical Engineering Lab./AIST (Japan)
Yukari Tanikawa, Mechanical Engineering Lab./AIST (Japan)
Yukio Yamada, Mechanical Engineering Lab./AIST (Japan)

Published in SPIE Proceedings Vol. 2979:
Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II
Britton Chance; Robert R. Alfano, Editor(s)

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