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Proceedings Paper

Optical computed tomography of multiple-scattering media using laser spectral linewidth broadening
Author(s): Yuuki Watanabe; Tetsuya Yuasa; Balasigamani Devaraj; Takao Akatsuka; H. Inaba
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Paper Abstract

Optical tomography and imaging techniques using coherence domain methods are widely studied for biomedical applications. Most optical tomographic images are reconstructed using the intensities of transmitted or reflected lights. In highly scattering media such as biological tissues, the exponential attenuation of the coherence-gated transmitted light beyond an optical thickness of 20 scattering mean free paths is small when compared to attenuation in a relatively transparent media. Tomographic image reconstruction of optical thicker scattering media using the intensity of emergent photons results in images of low resolution and contrast. Here, we report transillumination optical computed tomography (CT) of highly scattering media using the laser spectral linewidth broadening, instead of the transmitted light intensity. We demonstrate that quantitative scattering linewidth broadening CT images. Our method could provide novel information on biomedical applications of thick tissues, where the differences in the scattering coefficients or dynamic properties can not be quantitatively determined from the images reconstructed with the intensity of transmitted light.

Paper Details

Date Published: 28 April 2000
PDF: 8 pages
Proc. SPIE 3915, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications IV, (28 April 2000); doi: 10.1117/12.384145
Show Author Affiliations
Yuuki Watanabe, Yamagata Univ. (Japan)
Tetsuya Yuasa, Yamagata Univ. (Japan)
Balasigamani Devaraj, Iwate Univ. (United States)
Takao Akatsuka, Yamagata Univ. (Japan)
H. Inaba, Tohoku Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 3915:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications IV
Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto, Editor(s)

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