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Related Experiment Videos

Sonicated echocardiographic contrast agents: reproducibility studies.

S B Feinstein1, M W Keller, R E Kerber

  • 1Division of Cardiology, University of Chicago, IL.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|March 1, 1989
PubMed
Summary

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This study demonstrates a reproducible sonication method for creating uniform microbubbles for contrast ultrasound imaging. The technique yields consistent microbubble size and concentration, suitable for various research and clinical applications.

Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Acoustics

Background:

  • Microbubbles are crucial for contrast-enhanced ultrasound imaging.
  • Reproducible production of microbubbles with uniform size is essential for reliable imaging.
  • Current methods may lack standardization, impacting clinical utility.

Purpose of the Study:

  • To describe and validate a sonication method for microbubble production.
  • To assess the reproducibility of microbubble size and concentration across multiple observers.
  • To establish a standardized method for generating microbubbles for contrast-enhanced ultrasound.

Main Methods:

  • Microbubbles were produced using a sonication technique.
  • Reproducibility was assessed by four independent observers performing multiple trials.

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  • Microbubble size and concentration were analyzed using a calibrated laser particle counter.

    • Main Results:

    • The sonication method produced microbubbles with a mean size of 3.3 ± 1.2 microns.
    • Analysis showed a reproducible and uniform size distribution across observers and trials.
    • Poisson distribution analysis confirmed inter-observer consistency.

    Conclusions:

    • The described sonication technique reliably generates small, uniformly sized microbubbles.
    • The method is highly reproducible and suitable for widespread application.
    • This technique supports the use of microbubbles in contrast echocardiography and tissue perfusion imaging.