Nonlinear dynamics of single freely-floating microbubbles under prolonged insonation

Ying Luan*, Guillaume Renaud, Jason L. Raymond, Robert Beurskens, Frits Mastik, Tom J.A. Kokhuis, Antonius F.W. Van Der Steen, Nico De Jong, Tim Segers, Guillaume P.R. Lajoinie, Michel Versluis

*Corresponding author for this work

Research output: Chapter/Conference proceedingConference proceedingAcademicpeer-review

Abstract

The acoustic nonlinear responses of ultrasound contrast agent microbubbles (MBs) are of great interest for both diagnostic and therapeutic applications. Previously, optical and acoustical methods were developed to characterize single bubbles floating against a rigid wall. However, there is a need to develop an efficient approach for statistical measurement of single freely-floating MBs. Here we combine simultaneous optical sizing and sensitive acoustical characterization measurement to study quantitatively the nonlinear dynamics of single freely-floating bubbles under prolonged ultrasound exposure. The nonlinearity (ε2f, ε3f) and asymmetry (i.e., compression-dominant behavior) of bubble vibrations were found to increase with increasing oscillation amplitude, and reach the maximum for bubbles at resonance. Moreover, with the same fundamental response (εf), the second harmonic response (ε2f) of bubbles smaller than the resonance size is 150% stronger than bubbles bigger than the resonance size. The data showed agreement with numerical simulations based on the shell-buckling model by Marmottant et al. The new system shows its great potential for in vitro characterization of contrast agent MB populations.

Original languageEnglish
Title of host publicationIEEE International Ultrasonics Symposium, IUS
PublisherIEEE Computer Society
Pages1786-1789
Number of pages4
ISBN (Electronic)9781479970490
DOIs
Publication statusPublished - 20 Oct 2014
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: 3 Sep 20146 Sep 2014

Publication series

SeriesIEEE International Ultrasonics Symposium, IUS
ISSN1948-5719

Conference

Conference2014 IEEE International Ultrasonics Symposium, IUS 2014
Country/TerritoryUnited States
CityChicago
Period3/09/146/09/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

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