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Proceedings Paper

Simulation study of ultrasound-modulated optical tomography
Author(s): Gang Yao; Lihong V. Wang
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Paper Abstract

Monte-Carlo modeling technique was used to simulate the ultrasound-modulated optical tomography. The difference between absorption and scattering objects was compared. Simulation result indicated that this technique is sensitive to object absorption property, while the scattering properties have less effect on the output AC/DC signal intensity. It was also demonstrated that inhomogeneity and the background optical properties of the scattering medium could change the AC/DC value. The signal-to-noise ratio problem in the experiment is carefully analyzed. The major noise source is the speckle noise caused by the small particle movement within the tissue sample. The decorrelation time of the speckle pattern was measured in the tissue sample. In order to reduce the speckle noise, the data acquisition time must be less than the speckle decorrelation time.

Paper Details

Date Published: 15 June 2001
PDF: 8 pages
Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); doi: 10.1117/12.429307
Show Author Affiliations
Gang Yao, Texas A&M Univ. (United States)
Lihong V. Wang, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 4256:
Biomedical Optoacoustics II
Alexander A. Oraevsky, Editor(s)

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