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A new algorithm based on time-dependent contrast functions, used to evaluate optical characteristics of an abnormality hidden within a tissue-like phantom

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Abstract

We have developed a methodology that can be used in reconstruction algorithms to quantify the optical coefficients and the geometrical cross section of a weakly abnormal optical target embedded in an otherwise homogeneous medium. This novel procedure uses different time-dependent point spread functions to analyze the diffusive and absorptive contrasts obtained from time-of-flight measurements. To test the robustness of our reconstruction algorithm, we analyzed two time-resolved data sets obtained in different experimental geometries for a tissue-like phantom. We have shown that results for the two cases are consistent and agree with known values.

© 1998 Optical Society of America

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