Ultrasound-modulated optical tomography for dense turbid media

Lihong V. Wang; Xuemei Zhao; Steven L. Jacques

doi:10.1117/12.238787

24 April 1996 Ultrasound-modulated optical tomography for dense turbid media

Lihong V. Wang, Xuemei Zhao, Steven L. Jacques

Proceedings Volume 2676, Biomedical Sensing, Imaging, and Tracking Technologies I; (1996) https://doi.org/10.1117/12.238787
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Continuous-wave ultrasonic modulation of scattered laser light has been used to image objects in tissue-simulating turbid media for the first time. We hypothesized that the ultrasound wave focused into the turbid media modulates the laser light passing through the ultrasonic focal zone. The modulated laser light collected by a photomultiplier tube reflects the local mechanical and optical properties in the focal zone. Buried objects in 5-cm thick tissue phantoms (absorption coefficient (mu) $a) equals 0.1 cm^-1, reduced scattering coefficient (mu) _s' equals 10 cm^-1) were located with millimeter resolution by scanning and detecting alterations of the ultrasound-modulated optical signal.

Citation Download Citation

Lihong V. Wang, Xuemei Zhao, and Steven L. Jacques "Ultrasound-modulated optical tomography for dense turbid media", Proc. SPIE 2676, Biomedical Sensing, Imaging, and Tracking Technologies I, (24 April 1996); https://doi.org/10.1117/12.238787

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