Single bubble acoustic characterization and stability measurement of adherent microbubbles

Jonathan Casey, Charles Sennoga, Helen Mulvana, Jo V. Hajnal, Meng-Xing Tang, Robert J. Eckersley

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This article examines how the acoustic and stability characteristics of single lipid-shelled microbubbles (MBs) change as a result of adherence to a target surface. For individual adherent and non-adherent MBs, the backscattered echo from a narrowband 2-MHz, 90-kPa peak negative pressure interrogation pulse was obtained. These measurements were made in conjunction with an increasing amplitude broadband disruption pulse. It was found that, for the given driving frequency, adherence had little effect on the fundamental response of an MB. Examination of the second harmonic response indicated an increase of the resonance frequency for an adherent MB: resonance radius increasing of 0.3 ± 0.1 μm for an adherent MB. MB stability was seen to be closely related to MB resonance and gave further evidence of a change in the resonance frequency due to adherence.
Original languageEnglish
Pages (from-to)903-914
Number of pages12
JournalUltrasound in Medicine and Biology
Volume39
Issue number5
Early online date6 Mar 2013
DOIs
Publication statusPublished - 31 May 2013

Keywords

  • ultrasound
  • microbubbles
  • targeting
  • adherence
  • resonance
  • stability

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