Viscoelasticity and shear wave velocity of liver tissue evaluated by dynamic mechanical analysis

K. Murakami, M. Tsukune, Y. Kobayashi, M. Fujie, R. Kishimoto, T. Obata, K. Kawamura, K. Yoshida, T. Yamaguchi

研究成果: Conference contribution

抄録

The frequency dependence of shear wave velocity provides significant information for evaluating viscoelastic character of tissue relating to liver fibrosis. Although Voigt model has been often used in viscoelastic analysis, several studies showed that the frequency dependence measured by dynamic mechanical analysis (DMA) test was not consistent with the theoretical prediction. To experimentally investigate the relationships of the change of the tissue structure and the viscoelasticity of tissue, the shear wave velocity of fatty and fibrotic livers of rat model was quantitatively measured by using shear wave elastography (SWE) and DMA test. In DMA test, shear wave velocity was calculated from the complex elasticity modulus; storage and loss elastic modulus. The difference in shear wave velocity between fatty and fibrotic livers was evaluated to be 0.27 m/s in SWE and 0.20 m/s in DMA test.

本文言語English
ホスト出版物のタイトル2015 IEEE International Ultrasonics Symposium, IUS 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(印刷版)9781479981823
DOI
出版ステータスPublished - 2015 11 13
イベントIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
継続期間: 2015 10 212015 10 24

Other

OtherIEEE International Ultrasonics Symposium, IUS 2015
国/地域Taiwan, Province of China
CityTaipei
Period15/10/2115/10/24

ASJC Scopus subject areas

  • 音響学および超音波学

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