Elasticity and viscosity estimation from shear wave velocity andattenuation: A simulation study

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

6 Scopus citations

Abstract

Shearwave Dispersion Ultrasound Vibrometry (SDUV) measures tissueelasticity and viscosity by quantifying dispersion of shear wave propagationvelocity. Long tone bursts of focused ultrasound are transmitted by an arraytransducer to a push origin at a pulse repetition frequency of fp toproduce multi-tone shear waves at fp and its harmonics. Shear wavesare monitored by pulse echo ultrasound transmitted by the same array transducerbetween the push tone bursts. The Voigt dispersion model is fitted to shear wavevelocities measured at multiple frequencies to estimate elasticity f1 and viscosity f2. Alternatively, f1 andf2 can be calculated from shear wave amplitude attenuation and shearvelocity at frequency, also based on Voigt model. In the present study, thesetwo approaches were compared using simulation data. Field II was used tosimulate ultrasound radiation force field generated by a linear arraytransducer. Motion in a homogenous viscoelastic medium was calculated using theGreen's function. Simulation results showed comparable estimations for bothmethods when SNR was high. When SNR was low, the amplitude attenuation methodwas more robust than the velocity method.

Original languageEnglish (US)
Title of host publication2010 IEEE International Ultrasonics Symposium, IUS 2010
Pages1604-1607
Number of pages4
DOIs
StatePublished - Dec 1 2010
Event2010 IEEE International Ultrasonics Symposium, IUS 2010 - San Diego, CA, United States
Duration: Oct 11 2010Oct 14 2010

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Other

Other2010 IEEE International Ultrasonics Symposium, IUS 2010
CountryUnited States
CitySan Diego, CA
Period10/11/1010/14/10

Keywords

  • Field II
  • Green's function
  • SDUV
  • Voigt model

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Fingerprint Dive into the research topics of 'Elasticity and viscosity estimation from shear wave velocity andattenuation: A simulation study'. Together they form a unique fingerprint.

  • Cite this

    Zhao, H., Urban, M., Greenleaf, J., & Chen, S. (2010). Elasticity and viscosity estimation from shear wave velocity andattenuation: A simulation study. In 2010 IEEE International Ultrasonics Symposium, IUS 2010 (pp. 1604-1607). [5935462] (Proceedings - IEEE Ultrasonics Symposium). https://doi.org/10.1109/ULTSYM.2010.5935462