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Published April 28, 2006 | Published
Journal Article Open

Correlation Transfer and Diffusion of Ultrasound-Modulated Multiply Scattered Light


We develop a temporal correlation transfer equation (CTE) and a temporal correlation diffusion equation (CDE) for ultrasound-modulated multiply scattered light. These equations can be applied to an optically scattering medium with embedded optically scattering and absorbing objects to calculate the power spectrum of light modulated by a nonuniform ultrasound field. We present an analytical solution based on the CDE and Monte Carlo simulation results for light modulated by a cylinder of ultrasound in an optically scattering slab. We further validate with experimental measurements the numerical calculations for an actual ultrasound field. The CTE and CDE are valid for moderate ultrasound pressures and on a length scale comparable with the optical transport mean-free path. These equations should be applicable to a wide spectrum of conditions for ultrasound-modulated optical tomography of soft biological tissues.

Additional Information

© 2006 The American Physical Society. Received 4 January 2006; published 26 April 2006. Thanks to A. Garcia-Uribe for measuring the optical properties and to R. Zemp for helpful discussion. This project was sponsored by NIH Grant No. R33 CA 094267.

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Published - SakadzicS_2006_Phys_Rev_Lett_96_16902.pdf


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August 19, 2023
October 19, 2023