Theoretical study of shock wave-inertial microbubble interaction
The works focus on the response of the bubble to
the various lithotripter shock wave to investigate shock wave-inertial
microbubble interaction. The Gilmore formulation for bubble dynamics coupled
with zero-order gas diffusion were used to investigate theoretically the
cavitation activity produced by a modified XL-1 lithotripter. The model
calculation conforms many of the basic features in bubble dynamics observed
experimentally, in particular the strong secondary shock wave emission
generated by in situ lithotripter shock wave-inertial microbubble
interaction. Moreover, shock wave-inertial microbubble interaction produced
by a Dornier HM-3, the most commonly used clinical lithotripter, was also
evaluated. It was shown that the forced collapse of inertial microbubbles
with strong strong secondary shock wave emission could be produced consistently,
provided that an appropriate proceeding shock wave and interpulse delay
were used. Further, it was demonstrated that truncation of the tensile
stress of the lithotripter shock wave could significantly reduce the large
expansion of the bubble following shock wave-inertial microbubble interaction,
which may alleviate the risk for vascular injury during shock wave exposure.
A paper with name of "Shock Wave-Inertial Microbubble
Interaction: A Theoretical Study Based on Gilmore Formulation for Bubble
Dynamics" has been published by J. of Acoustical Society of American.
if
you are interested in the paper, please click here to view
or download it (PDF file) or send
me an email to ask for a copy.
A software used to calculate bubble response to
the shock wave was developed by using Matlab. For easy of use, a Graphical
User Interface (GUI) was built in software (see Fig. 1).
Figure 1 Software for computing the response of a bubble to
shock waves
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