Quantifying elasticity and viscosity from measurement of shear wave speed dispersion

被引：313

作者：

Chen, SG ^{[1
]}

Fatemi, M ^{[1
]}

Greenleaf, JF ^{[1
]}

机构：

[1] Mayo Clin, Coll Med, Dept Physiol & Biomed Engn, Basic Ultrasound Res Lab, Rochester, MN 55905 USA

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2004年 / 115卷 / 06期

关键词：

D O I：

10.1121/1.1739480

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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. (C) 2004 Acoustical Society of America.

引用

页码：2781 / 2785

页数：5

共 18 条

[1]

Andreev VG, 1997, ACOUST PHYS+, V43, P123

[2]

CHEN S, 2002, P 2003 ULTR S, P1827

[3] Remote measurement of material properties from radiation force induced vibration of an embedded sphere [J].

Chen, SG ;

Fatemi, M ;

Greenleaf, JF .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2002, 112 (03) :884-889

[4] Vibro-acoustography: An imaging modality based on ultrasound-stimulated acoustic emission [J].

Fatemi, M ;

Greenleaf, JF .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1999, 96 (12) :6603-6608

[5]

Fung Y.C., 1993, BIOMECHANICS MECH PR, P41

[6] Elastography of breast lesions: Initial clinical results [J].

Garra, BS ;

Cespedes, EI ;

Ophir, J ;

Spratt, SR ;

Zuurbier, RA ;

Magnant, CM ;

Pennanen, MF .

RADIOLOGY, 1997, 202 (01) :79-86

[7]

GRAFF KF, 1991, WAVE MOTION ELASTIC, P284

[8] Elastographic imaging of low-contrast elastic modulus distributions in tissue [J].

Kallel, F ;

Ophir, J ;

Magee, K ;

Krouskop, T .

ULTRASOUND IN MEDICINE AND BIOLOGY, 1998, 24 (03) :409-425

[9]

Lerner R. M., 1988, Acoustical Imaging. Vol.19. Proceedings of the 16th International Symposium, P317

[10] MAGNETIC-RESONANCE ELASTOGRAPHY BY DIRECT VISUALIZATION OF PROPAGATING ACOUSTIC STRAIN WAVES [J].

MUTHUPILLAI, R ;

LOMAS, DJ ;

ROSSMAN, PJ ;

GREENLEAF, JF ;

MANDUCA, A ;

EHMAN, RL .

SCIENCE, 1995, 269 (5232) :1854-1857

← 1 2 →