Shearwave dispersion ultrasound vibrometry applied to in vivo myocardium

Research output: Chapter in Book/Report/Conference proceedingConference contribution

35 Scopus citations

Abstract

Diastolic properties of the myocardium are important for normal cardiac function and may contribute to the condition of heart failure. Measuring the viscoelastic properties of the left ventricular myocardium is difficult in vivo using noninvasive methods. In this study, we used a mechanical actuator to create harmonic, propagating mechanical waves in the myocardial tissue in vivo. The motion was measured using ultrasound imaging techniques. The wave propagation velocities were measured over the 50-350Hz frequency range. The dispersion curves were fit with an asymmetrical Lamb wave model to obtain estimates of the shear elasticity and viscosity of the myocardial tissue. The method was applied to estimate viscoelastic properties of the myocardium during diastole and systole.

Original languageEnglish (US)
Title of host publicationProceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Subtitle of host publicationEngineering the Future of Biomedicine, EMBC 2009
PublisherIEEE Computer Society
Pages2891-2894
Number of pages4
ISBN (Print)9781424432967
DOIs
StatePublished - 2009
Event31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 - Minneapolis, MN, United States
Duration: Sep 2 2009Sep 6 2009

Publication series

NameProceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009

Other

Other31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
CountryUnited States
CityMinneapolis, MN
Period9/2/099/6/09

ASJC Scopus subject areas

  • Cell Biology
  • Developmental Biology
  • Biomedical Engineering
  • Medicine(all)

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  • Cite this

    Pislaru, C., Urban, M. W., Nenadic, I., & Greenleaf, J. F. (2009). Shearwave dispersion ultrasound vibrometry applied to in vivo myocardium. In Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 (pp. 2891-2894). [5333114] (Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009). IEEE Computer Society. https://doi.org/10.1109/IEMBS.2009.5333114