Volume 89, Number 2, January 2010
|Number of page(s)||6|
|Published online||10 February 2010|
Nonlinearity in the interaction of ultrasound contrast agents under the periodic acoustic forcing
School of Biology, The University of Nottingham - Nottingham, UK, EU
2 Department of Mathematics & Statistics, Strachclyde University - Glasgow, UK, EU
3 Department of Mathematics, Glasgow Caledonian University - Glasgow, UK, EU
Corresponding author: email@example.com
Accepted: 11 January 2010
Ultrasound contrast agents, a type of specially coated gas-filled microbubbles, provide a mean for the imaging of vascular volume and flow rate directly and in real time (Becher H. and Burns P., Handbook of Contrast Echocardiography (Springer) 2000). The response of a spherical bubble to an applied acoustic pressure can have a highly nonlinear character. On the other hand, experimental observations and theoretical calculations indicate that the presence of the shell suppresses the oscillations of the microbubble wall and results in a reduced nonlinear response. Numerical simulations of interacting contrast agents under a periodic forcing have been performed in order to study the influence of bubble-bubble interactions and of the encapsulating shell.
PACS: 05.45.-a – Nonlinear dynamics and chaos / 05.45.Xt – Synchronization; coupled oscillators
© EPLA, 2010
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