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Microsecond‐long flash photography of laser‐induced ablation of biliary and urinary calculi

1987; Wiley; Volume: 7; Issue: 5 Linguagem: Inglês

10.1002/lsm.1900070504

1096-9101

Peter Teng, Norman S. Nishioka, William A. Farinelli, R. Rox Anderson, Thomas F. Deutsch,

Laser-induced spectroscopy and plasma

Abstract High‐speed flash photographs of laser‐induced fragmentation of biliary and renal calculi under water were obtained using one‐microsecond‐long dye‐laser pulses for both illumination and ablation. The photographs show the presence of a bubble with irregularities on the surface that suggest the early presence of debris or microbubbles. Fragmentation occurs before the bubble collapses, suggesting that fragmentation is due to laser‐induced acoustic transients rather than to collapse of a laser‐induced cavitation bubble.