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Proceedings Paper

Laser interaction with pseudoblood clots
Author(s): Dennis L. Paisley; David B. Stahl
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Paper Abstract

In recent years lasers have become a common tool for medical procedures. Lasers are typically used to deliver energy/power to a biological specimen to alter its characteristics, fuse tissue or destroy a particular structure. Under a Los Alamos CRADA, we have been working with a medical laser company and a laser medical center to study the laser interaction with pseudo-blood clots that are typical of those found in human coronary arteries. A 577-nm flash lamp pumped dye laser beam is pulsed through a 300- micron optical fiber to deliver the laser energy on the surface of a pseudo-clot material. The fiber and pseudo-clot are surrounded by water or x-ray contrast fluid transparent at 577 and 514 nm. The laser-pulse/clot interaction creates a bubble at the water-clot interface. The bubble expands out and collapses back on the pseudo-clot resulting part of the clot being removed. Using a backlight technique with an electronic framing camera we record the bubble growth, expansion, and collapse, and the debris generated by the interaction.

Paper Details

Date Published: 28 May 1997
PDF: 4 pages
Proc. SPIE 2869, 22nd International Congress on High-Speed Photography and Photonics, (28 May 1997);
Show Author Affiliations
Dennis L. Paisley, Los Alamos National Lab. (United States)
David B. Stahl, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 2869:
22nd International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; ALan M. Frank, Editor(s)

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