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Proceedings Paper

Measurement of ultrasonically modulated scattered light for imaging in turbid media
Author(s): Glen W. Brooksby; Carl Murray Penney
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Paper Abstract

The concept of ultrasonic tagging of light is investigated as a possible modality for imaging human tissue with nonionizing radiation. Experiments were performed to detect the presence of ultrasonically tagged light in an optically scattering medium. Experiments with a doubled Nd:YAG laser incident on a tank filled with water and varying concentrations of 3 micrometers diameter latex microspheres showed that the doppler phase modulation due to Brownian motion as well as a phase modulation due to the presence of focused CW ultrasound were both observable using heterodyne detection of the scattered light. The experimental apparatus is described and data are presented for the detected ultrasonically modulated signal level versus particle concentration.

Paper Details

Date Published: 30 May 1995
PDF: 7 pages
Proc. SPIE 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation, (30 May 1995); doi: 10.1117/12.210003
Show Author Affiliations
Glen W. Brooksby, GE Corporate Research and Development Ctr. (United States)
Carl Murray Penney, GE Corporate Research and Development Ctr. (United States)


Published in SPIE Proceedings Vol. 2389:
Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation
Britton Chance; Robert R. Alfano, Editor(s)

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