Computing dispersion curves of elastic/viscoelastic transversely-isotropic bone plates coupled with soft tissue and marrow using semi-analytical finite element (SAFE) method

被引：29

作者：

Vu-Hieu Nguyen ^{[1
]}

Tran, Tho N. H. T. ^{[2
]}

Sacchi, Mauricio D. ^{[3
]}

Naili, Salah ^{[1
]}

Le, Lawrence H. ^{[2
,3
]}

机构：

[1] Univ Paris Est, CNRS, UMR 8208, Lab Modelisat & Simulat Multi Echelle, Creteil, France

[2] Univ Alberta, Dept Radiol & Diagnost Imaging, Edmonton, AB T6G 2B7, Canada

[3] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada

来源：

COMPUTERS IN BIOLOGY AND MEDICINE | 2017年 / 87卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Ultrasound; Semi-analytical finite element (SAFE); Cortical bone; Axial transmission; Guided waves; Phase velocity; Group velocity; Energy velocity; Dispersion; Attenuation; Transverse isotropy; ULTRASONIC WAVE-PROPAGATION; LEAKY LAMB WAVES; AXIAL TRANSMISSION; CORTICAL BONE; GUIDED-WAVES; LONG BONES; IN-VITRO; VELOCITY-MEASUREMENT; ANISOTROPIC PLATES; SIMULATION;

D O I：

10.1016/j.compbiomed.2017.06.001

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We present a semi-analytical finite element (SAFE) scheme for accurately computing the velocity dispersion and attenuation in a trilayered system consisting of a transversely-isotropic (TI) cortical bone plate sandwiched between the soft tissue and marrow layers. The soft tissue and marrow are mimicked by two fluid layers of finite thickness. A Kelvin-Voigt model accounts for the absorption of all three biological domains. The simulated dispersion curves are validated by the results from the commercial software DISPERSE and published literature. Finally, the algorithm is applied to a viscoelastic trilayered TI bone model to interpret the guided modes of an ex vivo experimental data set from a bone phantom.

引用

页码：371 / 381

页数：11

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