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Dynamics of Concerted Bubble Cluster Collapse in Shock Wave Lithotripsy

Pishchalnikov, Yuri A. and McAteer, James A. and Evan, Andrew P. and Sapozhnikov, Oleg A. and Cleveland, Robin O. and Colonius, Tim and Bailey, Michael R. and Crum, Lawrence A. (2003) Dynamics of Concerted Bubble Cluster Collapse in Shock Wave Lithotripsy. In: 146th Meeting of the Acoustical Society of America, 10-14 November 2003, Austin, TX.

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Cavitation bubble cluster collapse at the surface of artificial kidney stones during shock wave lithotripsy was investigated in vitro by means of multiframe high‐speed photography, passive cavitation detection (PCD), and pressure waveform measurements using a fiber‐optic probe hydrophone (FOPH). It was observed that after the passage of the lithotripter shock pulse the stone was covered by numerous individual bubbles. During their growth phase the bubbles coalesced into bubble clusters, with the biggest cluster at the proximal face of the stone. High‐speed camera images suggested that cluster collapse started at the periphery and ended with a violent collapse in a small region in the center of the surface of the stone. Shadowgraphy resolved numerous secondary shock waves emitted during this focused collapse. Shock wave emission during cluster collapse was confirmed by PCD. Measurement with the FOPH showed that these shock waves were typically of short duration (0.2 μs). The majority of the shock waves emanating from cluster collapse were low amplitude but some shock waves registered amplitudes on the order of the incident shock pulse (tens of MPa).

Item Type:Conference or Workshop Item (Paper)
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Colonius, Tim0000-0003-0326-3909
Additional Information:© 2003 Acoustical Society of America. Published Online: 08 October 2003. Work supported by NIH DK43881, DK55674.
Funding AgencyGrant Number
Subject Keywords:Fiber optics; Optical imaging; Organs; Hydrophone; Shock waves; Cavitation bubbles; Medical diagnosis
Record Number:CaltechAUTHORS:20190718-165128182
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97277
Deposited By: Melissa Ray
Deposited On:26 Jul 2019 18:17
Last Modified:16 Nov 2021 17:30

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