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Imaging of absorption distribution in diffuse medium using backscattered light

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Abstract

A technique was developed to reconstruct the cross-sectional image of the absorption distribution in a diffuse medium using backscattered light. In this technique, we illuminate an object with an ultra-short pulse, and measure the time-resolved pulse shape of the light backscattered from the object. The absorption distribution of the scattering object can be estimated using the path-length distribution of photons at each detection time and the intensity of backscattered light at the corresponding detection time. The feasibility of this technique was verified through a simulation and a measurement with a biological model.

© 1998 Optical Society of America

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