Diffusion model for ultrasound-modulated light.


Journal Article

Researchers use ultrasound (US) to modulate diffusive light in a highly scattering medium like tissue. This paper analyzes the US-optical interaction in the scattering medium and derives an expression for the US-modulated optical radiance. The diffusion approximation to the radiative transport equation is employed to develop a Green's function for US-modulated light. The predicted modulated fluence and flux are verified using finite-difference time-domain simulations. The Green's function is then utilized to illustrate the modulated reflectance as the US-optical interaction increases in depth. The intent of this paper is to focus on high US frequencies necessary for high-resolution imaging because they are of interest for applications such as phase conjugation.

Full Text

Duke Authors

Cited Authors

  • Hollmann, JL; Horstmeyer, R; Yang, C; DiMarzio, CA

Published Date

  • March 2014

Published In

Volume / Issue

  • 19 / 3

Start / End Page

  • 35005 -

PubMed ID

  • 24638247

Pubmed Central ID

  • 24638247

Electronic International Standard Serial Number (EISSN)

  • 1560-2281

International Standard Serial Number (ISSN)

  • 1083-3668

Digital Object Identifier (DOI)

  • 10.1117/1.jbo.19.3.035005


  • eng