Asymmetric oscillation of cavitation bubbles in a microvessel and its implications upon mechanisms of clinical vessel injury in shock-wave lithotripsy

Y. T. Hu, Shengping Qin, Ting Hu, Katherine W. Ferrara, Qing Jiang

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

A theoretical model for constrained oscillations of a cavitation bubble inside a vessel is developed, and an approximate solution, including the second-order effect when the vessel radius is significantly larger than the bubble, indicates that the effect of asymmetric bubble oscillation due to the vessel constraint is significant even with a very moderate initial wall velocity, and that this effect magnifies itself with time. Neglecting the effect of asymmetric oscillation leads to a substantial underestimate of the peak pressure exerted on the vessel due to the bubble oscillation, underscoring the importance of the asymmetric oscillation on the resulting vessel dilation, which has been viewed as a primary mechanism for the clinical injuries of capillary and small blood vessels in shock wave lithotripsy.

Original languageEnglish (US)
Pages (from-to)341-350
Number of pages10
JournalInternational Journal of Non-Linear Mechanics
Volume40
Issue number2-3
DOIs
StatePublished - Mar 2005

Keywords

  • Cavitation bubbles
  • Non-spherical oscillation
  • Vessel constraint

ASJC Scopus subject areas

  • Mechanical Engineering
  • Statistical and Nonlinear Physics

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