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Proceedings Paper

In-vitro ablation of fibrocartilage by XeCl excimer laser
Author(s): Martin Buchelt M.D.; Thanassis Papaioannou; Michael C. Fishbein M.D.; Werner Peters M.D.; Clain Beeder; Warren S. Grundfest M.D.
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Paper Abstract

A 308 nm excimer laser was employed for ablation of human fibrocartilage. Experiments were conducted in vitro. The tissue response was investigated with respect to dosimetry (ablation rate versus radiant exposure) and thermal effect (thermographic analysis). Irradiation was performed via a 600 um fiber, with radiant exposures ranging between 20mj/mm2 and 80mj/mm2, at 20Hz. The ablation rates were found to range from 3um/pulse to 80um/pulse depending on the radiant exposure and/or the applied pressure on the delivery system. Thermographic analysis, during ablation, revealed maximum average temperatures of about 65 degree(s)C. Similar measurements performed, for the purpose of comparison, with a CW Nd:YAG and a CW CO2 laser showed higher values, of the order of 200 degree(s)C.

Paper Details

Date Published: 1 July 1991
PDF: 5 pages
Proc. SPIE 1420, Optical Fibers in Medicine VI, (1 July 1991);
Show Author Affiliations
Martin Buchelt M.D., Cedars-Sinai Medical Ctr. (Austria)
Thanassis Papaioannou, Cedars-Sinai Medical Ctr. (United States)
Michael C. Fishbein M.D., Cedars-Sinai Medical Ctr. (United States)
Werner Peters M.D., Cedars-Sinai Medical Ctr. (United States)
Clain Beeder, Cedars-Sinai Medical Ctr. (United States)
Warren S. Grundfest M.D., Cedars-Sinai Medical Ctr. (United States)

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

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