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Proceedings Paper

Spectral IR tissue diagnostics with photothermal detection
Author(s): G. Schule; Bernhard Schmitz; Rudolf W. Steiner
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Paper Abstract

Photothermal (PT) and Photoacoustic (PA) Step-Scan FT-IR measurements are successful tools for thickness determination of layered samples. Aiming to separate optically between different layered tissues, we have been able to distinguish skin, liver and muscle tissues by means of PT and PA measurement techniques. Performing Step-Scan FT-IR measurements, the PT and PA phase and amplitude signals follow the tissue's absorption peaks which corresponds to the transmission spectra. These results are supported and confirmed by a simulation using the Finite- Difference-Method whereat the basic spectral data from transmission measurements and some assumed thermal properties of investigated tissues have been inserted.

Paper Details

Date Published: 4 January 1999
PDF: 5 pages
Proc. SPIE 3565, Thermal Therapy, Laser Welding, and Tissue Interaction, (4 January 1999); doi: 10.1117/12.335797
Show Author Affiliations
G. Schule, Institut fuer Lasertechnologien in der Medizin und Messtechnik an der Univ. Ulm (Germany)
Bernhard Schmitz, Institut fuer Lasertechnologien in der Medizin und Messtechnik and der Univ. Ulm (Germany)
Rudolf W. Steiner, Institut fuer Lasertechnologien in der Medizin und Messtechnik an Der Univ. Ulm (Germany)


Published in SPIE Proceedings Vol. 3565:
Thermal Therapy, Laser Welding, and Tissue Interaction
Stephen G. Bown; Guy P. Delacretaz; Guilhem Godlewski; Gerhard J. Mueller; Roberto Pini; Hans-Dieter Reidenbach; Rudolf W. Steiner; Lars Othar Svaasand; Karl-Goran Tranberg, Editor(s)

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