Power Law Behavior of Shear Waves Measured in Swine Liver

被引：0

作者：

Grosz, Steven A. ^{[1
]}

Pereira, Rebeca ^{[2
]}

Bannon, Nicholas A. ^{[1
]}

Urban, Matthew W. ^{[2
]}

McGough, Robert J. ^{[1
]}

机构：

[1] Michigan State Univ, Elect & Comp Engn, E Lansing, MI 48824 USA

[2] Mayo Clin, Dept Radiol, Rochester, MN 55905 USA

来源：

2019 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2019年

关键词：

shear waves; power law attenuation; fractional calculus; ATTENUATION;

D O I：

10.1109/ultsym.2019.8925623

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

To characterize the attenuation and dispersion behavior of shear waves in excised swine liver samples, complex shear modulus values are measured with a Rheospectris C500+ from 10 Hz to 2000 Hz. The shear wave attenuation and shear wave speed are then calculated from the complex modulus measurements. A power law fit is evaluated for the shear wave attenuation, and a power law fit with a constant offset is evaluated for the shear wave speed. The power law closely matches the measured shear wave attenuation over most of the frequency range evaluated, although some differences are observed at lower frequencies. The power law with the constant offset closely matches the measured shear wave speed in all measurements. The results demonstrate that shear wave attenuation and shear wave speed in swine liver follow a power law.

引用

页码：2322 / 2325

页数：4

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