Literature DB >> 15237800

Quantifying elasticity and viscosity from measurement of shear wave speed dispersion.

Shigao Chen1, Mostafa Fatemi, James F Greenleaf.   

Abstract

The propagation speed of shear waves is related to frequency and the complex stiffness (shear elasticity and viscosity) of the medium. A method is presented to solve for shear elasticity and viscosity of a homogeneous medium by measuring shear wave speed dispersion. Harmonic radiation force, introduced by modulating the energy density of incident ultrasound, is used to generate cylindrical shear waves of various frequencies in a homogeneous medium. The speed of shear waves is measured from phase shift detected over the distance propagated. Measurements of shear wave speed at multiple frequencies are fit with the theoretical model to solve for the complex stiffness of the medium. Experiments in gelatin phantoms show promising results validated by an independent method. Practical considerations and challenges in possible medical applications are discussed.

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Year:  2004        PMID： 15237800     DOI： 10.1121/1.1739480

Source DB:  PubMed          Journal:  J Acoust Soc Am        ISSN： 0001-4966            Impact factor:   1.840


  101 in total

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5.  Estimation of mechanical properties of a viscoelastic medium using a laser-induced microbubble interrogated by an acoustic radiation force.

Authors:  Sangpil Yoon; Salavat R Aglyamov; Andrei B Karpiouk; Seungsoo Kim; Stanislav Y Emelianov
Journal:  J Acoust Soc Am       Date:  2011-10       Impact factor: 1.840

6.  AN OVERVIEW OF ELASTOGRAPHY - AN EMERGING BRANCH OF MEDICAL IMAGING.

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7.  An analytic, Fourier domain description of shear wave propagation in a viscoelastic medium using asymmetric Gaussian sources.

Authors:  Ned C Rouze; Mark L Palmeri; Kathryn R Nightingale
Journal:  J Acoust Soc Am       Date:  2015-08       Impact factor: 1.840

8.  Noninvasive assessment of liver fibrosis using ultrasound-based shear wave measurement and comparison to magnetic resonance elastography.

Authors:  Heng Zhao; Jun Chen; Duane D Meixner; Hua Xie; Vijay Shamdasani; Shiwei Zhou; Jean-Luc Robert; Matthew W Urban; William Sanchez; Matthew R Callstrom; Richard L Ehman; James F Greenleaf; Shigao Chen
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Authors:  Allison B Wang; Eric J Perreault; Thomas J Royston; Sabrina S M Lee
Journal:  J Biomech       Date:  2019-07-25       Impact factor: 2.712

10.  Finite element modeling of impulsive excitation and shear wave propagation in an incompressible, transversely isotropic medium.

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Journal:  J Biomech       Date:  2013-09-13       Impact factor: 2.712
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