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Proceedings Paper

Two-dimensional tissue imaging by use of parallel detection of ultrasound-modulated laser speckles
Author(s): Gang Yao; Lihong V. Wang
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Paper Abstract

Ultrasound-modulated optical tomography in biological tissue was studied. An ultrasonic beam was focused into a biological tissue sample to modulate the laser light passing through the ultrasonic beam inside the tissue. The speckle field formed by the transmitted laser light was detected by a CCD camera with the source-synchronous-illumination lock- in technique. The ultrasound-modulated laser light reflects the local optical and mechanical properties within the ultrasonic beam and can be used for tomographic imaging of the tissue. We implemented frequency-swept modulation to obtain spatial resolution along the ultrasonic axis. 2D images of biological tissue were successfully obtained with both single frequency modulation and frequency-swept modulation. 3D images could be acquired as well in principle.

Paper Details

Date Published: 19 May 2000
PDF: 7 pages
Proc. SPIE 3916, Biomedical Optoacoustics, (19 May 2000); doi: 10.1117/12.386314
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. 3916:
Biomedical Optoacoustics
Alexander A. Oraevsky, Editor(s)

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