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19 May 2000 Two-dimensional tissue imaging by use of parallel detection of ultrasound-modulated laser speckles
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Proceedings Volume 3916, Biomedical Optoacoustics; (2000)
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States
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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gang Yao and Lihong V. Wang "Two-dimensional tissue imaging by use of parallel detection of ultrasound-modulated laser speckles", Proc. SPIE 3916, Biomedical Optoacoustics, (19 May 2000);


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