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Published June 14, 1999 | Published
Book Section - Chapter Open

Sound and light in turbid media

Abstract

Two imaging techniques combining ultrasound and light are reviewed. The motivation is to combine the advantages of optical information and acoustic imaging resolution. The first technique is sonoluminescence tomography, where a sonoluminescence signal generated internally in the media by continuous-wave ultrasound is used. Two-dimensional images can be produced for objects embedded in turbid media by raster scanning the media. The second technique is ultrasound- modulated optical tomography, where a frequency-swept ultrasonic wave was used to modulate the laser light passing through a scattering medium. Multiple 1D images obtained at various positions perpendicular to the ultrasonic axis were composed to obtain a 2D tomographic image of the medium.

Additional Information

© 1999 Society of Photo-Optical Instrumentation Engineers (SPIE). Thanks to X. Zhao for her experimental assistance in electronics. This project was sponsored by the National Institutes of Health grants (R29 CA68562 and R01 CA71980) and by the National Science Foundation grant (BES-9734491).

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