Simulation of time-resolved optical-CT imaging

Yukio Yamada; Yasuo Hasegawa

doi:10.1117/12.44179

1 May 1991 Simulation of time-resolved optical-CT imaging

Yukio Yamada, Yasuo Hasegawa

Author Affiliations +

Proceedings Volume 1431, Time-Resolved Spectroscopy and Imaging of Tissues; (1991) https://doi.org/10.1117/12.44179
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

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.

Citation Download Citation

Yukio Yamada and Yasuo Hasegawa "Simulation of time-resolved optical-CT imaging", Proc. SPIE 1431, Time-Resolved Spectroscopy and Imaging of Tissues, (1 May 1991); https://doi.org/10.1117/12.44179

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