Acoustic radiation force creep-recovery: Theory and finite element modeling

Carolina Amador, Bo Qiang, Matthew W. Urban, Shigao Chen, James F. Greenleaf

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

4 Scopus citations

Abstract

Shear wave elasticity imaging methods have demonstrated that tissue elasticity changes with disease state. The majority of current methods use shear wave speed and rely on rheological models to estimate mechanical properties such as elasticity and viscosity. A method to quantify viscoelastic properties in a model-independent manner by using acoustic radiation force induced recovery is useful to estimate tissue mechanical properties independent of the applied force and fitting models. In this study the acoustic radiation force recovery theory is reviewed and it is tested in tissue mimicking phantoms. Moreover, a finite element model (FEM) is used to study the acoustic radiation force induced recovery strain under different conditions of material properties defined by Voigt model, density and geometry. From the FEM study it was found that the shear strain can be approximated as the partial derivative of vertical displacement with respect to lateral distance. Moreover, FEM and experimental data showed that recovery strain is more likely to converge to Voigt model when viscosity is high.

Original languageEnglish (US)
Title of host publication2013 IEEE International Ultrasonics Symposium, IUS 2013
Pages363-366
Number of pages4
DOIs
StatePublished - Dec 1 2013
Event2013 IEEE International Ultrasonics Symposium, IUS 2013 - Prague, Czech Republic
Duration: Jul 21 2013Jul 25 2013

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2013 IEEE International Ultrasonics Symposium, IUS 2013
CountryCzech Republic
CityPrague
Period7/21/137/25/13

Keywords

  • Complex shear modulus
  • Creep
  • Recovery

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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    Amador, C., Qiang, B., Urban, M. W., Chen, S., & Greenleaf, J. F. (2013). Acoustic radiation force creep-recovery: Theory and finite element modeling. In 2013 IEEE International Ultrasonics Symposium, IUS 2013 (pp. 363-366). [6725008] (IEEE International Ultrasonics Symposium, IUS). https://doi.org/10.1109/ULTSYM.2013.0094