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Cavitation bubble cluster activity in the breakage of stones by shock wave lithotripsy

Pishchalnikov, Yuriy A. and Sapozhnikov, Oleg A. and Williams, James C. and Evan, Andrew P. and McAteer, James A. and Cleveland, Robin O. and Colonius, Tim and Bailey, Michael R. and Crum, Lawrence A. (2002) Cavitation bubble cluster activity in the breakage of stones by shock wave lithotripsy. In: 143rd Meeting of the Acoustical Society of America, 3-7 June 2002, Pittsburgh, PA.

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High‐speed photography was used to investigate cavitation at the surface of artificial and natural kidney stones during exposure to lithotripter shock pulses in vitro. It was observed that numerous individual bubbles formed over virtually the entire surface of the stone, but these bubbles did not remain independent and combined with one another to form larger bubbles and bubble clusters. The movement of bubble boundaries across the surface left portions of the stone bubble free. The biggest cluster grew to envelop the proximal end of the stone (6.5 mm diameter artificial stone) then collapsed to a small spot that over multiple shots formed a crater in that face of the stone. The bubble clusters that developed at the sides of stones tended to align along fractures and to collapse into these cracks. High‐speed camera images demonstrated that cavitation‐mediated damage to stones was due not to the action of solitary, individual bubbles, but to the forceful collapse of dynamic clusters of bubbles.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription Program
Colonius, Tim0000-0003-0326-3909
Additional Information:© 2002 Acoustical Society of America. Published Online: 06 May 2002. Work supported by NIH DK43881.
Funding AgencyGrant Number
Subject Keywords:Optical imaging; Organs; Cavitation bubbles; Medical diagnosis
Record Number:CaltechAUTHORS:20190709-092102208
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96977
Deposited By: Melissa Ray
Deposited On:12 Jul 2019 17:13
Last Modified:16 Nov 2021 17:25

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