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Proceedings Paper

Monitoring of tissue temperature during microwave hyperthermia utilizing a fiber optic liquid crystalline microsensor
Author(s): Andrzej W. Domanski; Stanislaw Kostrzewa; Andrzej Hliniak
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Paper Abstract

This paper presents the model of fiber optic liquid crystalline (LC) microsensor for monitoring tissue temperature. The LC layer obtained by dispersion of cholesteric liquid crystals in a polymer matrix, are placed in the end of the fiber optic head. Fiber optic bundles of multicomponent optical fibers are divided into three sections coupled to two LEDs and a photodiode. A reflectivity of cholesteric LC layers depends on temperature with high sensitivity. The sensor can detect temperature in a narrow band (about 5 degrees) within the range 35-45 degree(s)C with a high sensitivity up to 0.01 degree in its linear range of operation. Some results of temperature measurements during microwave treatment of tissue also are presented.

Paper Details

Date Published: 1 July 1991
PDF: 9 pages
Proc. SPIE 1420, Optical Fibers in Medicine VI, (1 July 1991); doi: 10.1117/12.43867
Show Author Affiliations
Andrzej W. Domanski, Warsaw Univ. of Technology (Poland)
Stanislaw Kostrzewa, Warsaw Univ. of Technology (Poland)
Andrzej Hliniak, Institute of Oncology (Poland)

Published in SPIE Proceedings Vol. 1420:
Optical Fibers in Medicine VI
Abraham Katzir, Editor(s)

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