Controlled cavitation to augment SWL stone comminution: mechanistic insights in vitro
نویسندگان
چکیده
منابع مشابه
Cavitation in Shock Wave Lithotripsy: the Critical Role of Bubble Activity in Stone Breakage and Kidney Trauma
OBJECTIVE: Shock Wave Lithotripsy (SWL) is the use of shock waves to fragment kidney stones. We have undertaken a study of the physical mechanisms responsible for stone comminution and tissue injury in SWL. SWL was originally developed on the premise that stone fragmentation could be induced by a short duration, high amplitude positive pressure pulse. Even though the SWL waveform carries a prom...
متن کاملAcoustic bubble removal to enhance SWL efficacy at high shock rate: an in vitro study.
Rate-dependent efficacy has been extensively documented in shock wave lithotripsy (SWL) stone comminution, with shock waves (SWs) delivered at a low rate producing more efficient fragmentation in comparison to those delivered at high rates. Cavitation is postulated to be the primary source underlying this rate phenomenon. Residual bubble nuclei that persist along the axis of SW propagation can ...
متن کاملProgress in Modeling and Simulation of Shock Wave Lithotripsy (swl)
Past research in shock wave lithotripsy (SWL) has shown that cavitation plays an essential role in the comminution of kidney stones. To provide a better understanding of the role of cloud cavitation dynamics in SWL, the flow in the focal region of a lithotripter was modeled using an ensemble averaged two-phase flow model for the bubbly mixture combined with a high-order accurate shock capturing...
متن کاملCloud Cavitation Control for a Therapeutic Ultrasound Application
In the therapeutic ultrasound field, the cavitation frequently forms a bubble cloud that consists of many microbubbles. A method to control the violent collapse of cloud cavitation is being developed. It is comprised of two frequency ultrasound. The first is a higher frequency ultrasound waveform that makes cloud cavitation at the surface of the object. The second is a lower frequency waveform ...
متن کاملControlled cavitation in microfluidics
Ed Zwaan,1 Séverine Le Gac,2 Kinko Tsuji,3 and Claus-Dieter Ohl1 Faculty of Science and Technology, Physics of Fluids, University of Twente, Postbus 217, 7500 AE Enschede, The Netherlands. BIOS the Lab-on-a-Chip group, MESA+ Institute for Nanotechnology, University of Twente, Postbus 217, 7500 AE Enschede, The Netherlands. Shimadzu Europa GmbH, Albert-Hahn-Strasse 6-10, D-47269 Duisburg, German...
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ژورنال
عنوان ژورنال: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
سال: 2013
ISSN: 0885-3010
DOI: 10.1109/tuffc.2013.2566