Reflectance tomography of two-layered turbid media with diffuse photon-density waves

Thorsten Spott; Lars Othar Svaasand; Joshua B. Fishkin; Tuan H. Pham; Bruce J. Tromberg

doi:10.1117/12.334379

30 December 1998 Reflectance tomography of two-layered turbid media with diffuse photon-density waves

Thorsten Spott, Lars Othar Svaasand, Joshua B. Fishkin, Tuan H. Pham, Bruce J. Tromberg

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Proceedings Volume 3566, Photon Propagation in Tissues IV; (1998) https://doi.org/10.1117/12.334379
Event: BiOS Europe '98, 1998, Stockholm, Sweden

Abstract

As approach to the examination of the structure of layered tissue can be found in the measurement of the diffuse reflectance of plane diffuse photon-density waves in the near-infrared range. Here, phase resolved reflectance measurements from phantom tissue, at modulation frequencies of up to 2 GHz, are presented and compared to calculations provided by a theoretical model. The examination of the phase shift reveals that the reflectance properties are characterized by photon-density wave interference phenomena. The proposed technique allows the investigation of the structure of tissue down to more than one penetration depth. A medical application may be found in improved examination techniques for deep burns, as the method allows the investigation of the tissue structure without physical contact to the surface.

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Thorsten Spott, Lars Othar Svaasand, Joshua B. Fishkin, Tuan H. Pham, and Bruce J. Tromberg "Reflectance tomography of two-layered turbid media with diffuse photon-density waves", Proc. SPIE 3566, Photon Propagation in Tissues IV, (30 December 1998); https://doi.org/10.1117/12.334379

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