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Proceedings Paper

Spectroscopy During Laser Induced Shock Wave Lithotripsy
Author(s): R. Engelhardt; W. Meyer; P. Hering
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Paper Abstract

In the course of laser induced shock wave lithotripsy (LISL) by means of a flashlamp pumped dye laser a plasma is formed on the stone's surface. Spectral analysis of the plasma flash leads to chemical stone analysis during the procedure. A time resolved integral analysis of scattered and laser induced fluorescence light makes stone detection possible and avoids tissue damage. We used a 200 μm fiber to transmit a 2 μs, 50 mJ pulse to the stone's surface and a second 200 μ fiber for analysis. This transmission system is small and flexible enough for controlled endoscopic use in the treatment of human ureter or common bile duct stones. Under these conditions the stone selective effect of lasertripsy leads only to minor tissue injury.

Paper Details

Date Published: 21 June 1988
PDF: 5 pages
Proc. SPIE 0906, Optical Fibers in Medicine III, (21 June 1988); doi: 10.1117/12.945278
Show Author Affiliations
R. Engelhardt, Medizinisches Laserzentrum Lubeck GmbH (Germany)
W. Meyer, Medizinisches Laserzentrum Lubeck GmbH (Germany)
P. Hering, MPI fur Quantenoptik (Germany)

Published in SPIE Proceedings Vol. 0906:
Optical Fibers in Medicine III
Abraham Katzir, Editor(s)

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