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Proceedings Paper

Simulation of time-resolved optical-CT imaging
Author(s): Yukio Yamada; Yasuo Hasegawa
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Paper Abstract

Simulation of optical-CT imaging has been conducted using the Monte Carlo method to generate projection data for filtered back projection. A reference cylinder of 10 mm diameter is filled with an uniformly scattering medium, and an object cylinder filled with the same scattering medium as the reference has an inner coaxial cylindrical portion with weak absorption. The time-resolved transmittances detected on the line of the incidence for object and the reference provide time- resolved data of the difference in the absorbances between the object and the reference. The difference in the absorbances which is temporally extrapolated to the shortest time of flight present projection data for filtered back projection usually used in CT reconstruction. The resulting reconstructed image reflects the difference in the absorption coefficients between the object and the reference with a satisfactory spatial resolution and accuracy.

Paper Details

Date Published: 1 May 1991
PDF: 10 pages
Proc. SPIE 1431, Time-Resolved Spectroscopy and Imaging of Tissues, (1 May 1991); doi: 10.1117/12.44179
Show Author Affiliations
Yukio Yamada, Mechanical Engineering Lab./AIST-MITI (Japan)
Yasuo Hasegawa, Mechanical Engineering Lab./AIST-MITI (Japan)

Published in SPIE Proceedings Vol. 1431:
Time-Resolved Spectroscopy and Imaging of Tissues
Britton Chance, Editor(s)

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