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Opt Lett. 2004 Sep 1;29(17):2043-5.

Absorption and scattering imaging of tissue with steady-state second-differential spectral-analysis tomography.

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  • 1Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, USA.


A novel approach to reconstructing both the absorption and the scattering properties of a turbid medium simultaneously from steady-state broadband spectral measurements is presented that utilizes second-differential fitting to the water spectrum to estimate the optical path length in tissue. Theoretical and experimental evidence is provided to demonstrate the robust accuracy of the spectroscopy approach and reconstructed absorption images. The steady-state broadband CCD system has the potential to provide accurate chromophore imaging without the technological complexity of time- or frequency-domain systems.

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