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Special Section on Optical Diagnostic Imaging from Bench to Bedside Image and Parameters Analysis

Optical imaging of turbid media using independent component analysis: theory and simulation

[+] Author Affiliations
M. Xu, M. Alrubaiee, S. K. Gayen, R. R. Alfano

The City College and Graduate Center of the City University of New York, Department of Physics, Institute for Ultrafast Spectroscopy and Lasers, , New York, New York 10031

J. Biomed. Opt. 10(5), 051705 (October 24, 2005). doi:10.1117/1.2101568
History: Received December 07, 2004; Revised February 25, 2005; Accepted March 14, 2005; Published October 24, 2005
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A new imaging approach for 3-D localization and characterization of objects in a turbid medium using independent component analysis (ICA) from information theory is developed and demonstrated using simulated data. This approach uses a multisource and multidetector signal acquisition scheme. ICA of the perturbations in the spatial intensity distribution measured on the medium boundary sorts out the embedded objects. The locations and optical characteristics of the embedded objects are obtained from a Green’s function analysis based on any appropriate model for light propagation in the background medium. This approach is shown to locate and characterize absorptive and scattering inhomogeneities within highly scattering medium to a high degree of accuracy. In particular, we show this approach can discriminate between absorptive and scattering inhomogeneities, and can locate and characterize complex inhomogeneities, which are both absorptive and scattering. The influence of noise and uncertainty in background absorption or scattering on the performance of this approach is investigated.

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© 2005 Society of Photo-Optical Instrumentation Engineers

Citation

M. Xu ; M. Alrubaiee ; S. K. Gayen and R. R. Alfano
"Optical imaging of turbid media using independent component analysis: theory and simulation", J. Biomed. Opt. 10(5), 051705 (October 24, 2005). ; http://dx.doi.org/10.1117/1.2101568


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