Monitoring of tissue temperature during microwave hyperthermia utilizing a fiber optic liquid crystalline microsensor

Andrzej W. Domanski; Stanislaw Kostrzewa; Andrzej Hliniak

doi:10.1117/12.43867

1 July 1991 Monitoring of tissue temperature during microwave hyperthermia utilizing a fiber optic liquid crystalline microsensor

Andrzej W. Domanski, Stanislaw Kostrzewa, Andrzej Hliniak

Author Affiliations +

Proceedings Volume 1420, Optical Fibers in Medicine VI; (1991) https://doi.org/10.1117/12.43867
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

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.

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Andrzej W. Domanski, Stanislaw Kostrzewa, and Andrzej Hliniak "Monitoring of tissue temperature during microwave hyperthermia utilizing a fiber optic liquid crystalline microsensor", Proc. SPIE 1420, Optical Fibers in Medicine VI, (1 July 1991); https://doi.org/10.1117/12.43867

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