Time reversal optical tomography: locating targets in a highly scattering turbid medium

Authors

Binlin Wu, CUNY City College
W. Cai, CUNY City College
M. Alrubaiee, CUNY City College
M. Xu, Fairfield University
S. K. Gayen, CUNY City College

Document Type

Article

Publication Date

October 2011

Abstract

A time reversal optical tomography (TROT) method for near-infrared (NIR) diffuse optical imaging of targets embedded in a highly scattering turbid medium is presented. TROT combines the basic symmetry of time reversal invariance and subspace-based signal processing for retrieval of target location. The efficacy of TROT is tested using simulated data and data obtained from NIR imaging experiments on absorptive and scattering targets embedded in Intralipid-20% suspension in water, as turbid medium. The results demonstrate the potential of TROT for detecting and locating small targets in a turbid medium, such as, breast tumors in early stages of growth.

Comments

This work was originally published in Optics Express, available at doi:10.1364/OE.19.021956.