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4 January 1999 Spectral IR tissue diagnostics with photothermal detection
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Schule, Bernhard Schmitz, and Rudolf W. Steiner "Spectral IR tissue diagnostics with photothermal detection", Proc. SPIE 3565, Thermal Therapy, Laser Welding, and Tissue Interaction, (4 January 1999); https://doi.org/10.1117/12.335797
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