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Proceedings Paper

Reflectance tomography of two-layered turbid media with diffuse photon-density waves
Author(s): Thorsten Spott; Lars Othar Svaasand; Joshua B. Fishkin; Tuan H. Pham; Bruce J. Tromberg
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Paper 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.

Paper Details

Date Published: 30 December 1998
PDF: 9 pages
Proc. SPIE 3566, Photon Propagation in Tissues IV, (30 December 1998); doi: 10.1117/12.334379
Show Author Affiliations
Thorsten Spott, Norwegian Univ. of Science and Technology (Norway)
Lars Othar Svaasand, Norwegian Univ. of Science and Technology (Norway)
Joshua B. Fishkin, Beckman Laser Institute and Medical Clinic (United States)
Tuan H. Pham, Beckman Laser Institute and Medical Clinic (United States)
Bruce J. Tromberg, Beckman Laser Institute and Medical Clinic (United States)


Published in SPIE Proceedings Vol. 3566:
Photon Propagation in Tissues IV
David A. Benaron; Britton Chance; Marco Ferrari; Matthias Kohl-Bareis, Editor(s)

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