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J Biomed Opt. 2012 Jun;17(6):067007. doi: 10.1117/1.JBO.17.6.067007.

Experimental spectro-angular mapping of light distribution in turbid media.

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  • 1University of Prince Edward Island, Department of Physics, Charlottetown, PEI Canada.


We present a new approach to the analysis of radiance in turbid media. The approach combines data from spectral, angular and spatial domains in a form of spectro-angular maps. Mapping provides a unique way to visualize details of light distribution in turbid media and allows tracking changes with distance. Information content of experimental spectro-angular maps is verified by a direct comparison with simulated data when an analytical solution of the radiative transfer equation is used. The findings deepen our understanding of the light distribution in a homogenous turbid medium and provide a first step toward applying the spectro-angular mapping as a diagnostic tool for tissue characterization.

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