Dosimetry of tympanic membrane of pig versus laser radiation at 633 nm

Hans-Jochen Foth; Silke Faerber; Axel Gauer; Konrad Becker; Rudolf Wagner

doi:10.1117/12.199187

18 January 1995 Dosimetry of tympanic membrane of pig versus laser radiation at 633 nm

Hans-Jochen Foth, Silke Faerber, Axel Gauer, Konrad Becker, Rudolf Wagner

Proceedings Volume 2323, Laser Interaction with Hard and Soft Tissue II; (1995) https://doi.org/10.1117/12.199187
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

In vitro experiments on tissue of tympanic membranes of pigs have been performed to determine the threshold for thermal effects like coagulation and perforation with 633 nm laser radiation. An optical setup with a CCD camera was used to monitor the spot size of the laser beam. Up to 38 samples have been investigated by semi thin slides and visualized by HE coloring. The lowest intensity at which a damage occurred was 2.5 kW/cm². However even much higher intensities, for example 15 kW/cm², did not damage the tympanic membrane. Only in four cases laser induced damage occurred showing coagulation, carbonization, and perforation.

Citation Download Citation

Hans-Jochen Foth, Silke Faerber, Axel Gauer, Konrad Becker, and Rudolf Wagner "Dosimetry of tympanic membrane of pig versus laser radiation at 633 nm", Proc. SPIE 2323, Laser Interaction with Hard and Soft Tissue II, (18 January 1995); https://doi.org/10.1117/12.199187

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