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Turbid acousto-optics and its potential for biomedical applications

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1 Author(s)
Lihong Wang ; Opt. Imaging Lab., Texas A&M Univ., College Station, TX, USA

Continuous-wave ultrasonic modulation of scattered laser light has been used to image objects in tissue-simulating turbid media for the first time. The modulated laser light collected by a photomultiplier tube reflected the local mechanical and optical properties in the modulation zone. Buried objects in 5-cm thick tissue phantoms were imaged with millimeter resolution by scanning and detecting alterations of the ultrasound-modulated optical signal. The tissue phantoms had the following optical properties: absorption coefficient μa=0.1 cm-1, reduced scattering coefficient μs'=10 cm-1, which are comparable with those of biological tissues in the visible and near IR range. This technique is merely a representation of a much broader discipline coined turbid acousto-optics, which means acousto-optics in turbid media

Published in:

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE  (Volume:6 )

Date of Conference:

30 Oct-2 Nov 1997

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