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Elastic Cherenkov effects in transversely isotropic soft materials-II: Ex vivo and in vivo experiments

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单位: [1]Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China [2]Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, PR China [3]Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, PR China
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In part I of this study, we investigated the elastic Cherenkov effect (ECE) in an incompressible transversely isotropic (TI) soft solid using a combined theoretical and computational approach, based on which an inverse method has been proposed to measure both the anisotropic and hyperelastic parameters of TI soft tissues. In this part, experiments were carried out to validate the inverse method and demonstrate its usefulness in practical measurements. We first performed ex vivo experiments on bovine skeletal muscles. Not only the shear moduli along and perpendicular to the direction of muscle fibers but also the elastic modulus E-L and hyperelastic parameter c(2) were determined. We next carried out tensile tests to determine EL, which was compared with the value obtained using the shear wave elastography method. Furthermore, we conducted in vivo experiments on the biceps brachii and gastrocnemius muscles of ten healthy volunteers. To the best of our knowledge, this study represents the first attempt to determine EL of human muscles using the dynamic elastography method and inverse analysis. The significance of our method and its potential for clinical use are discussed. (C) 2016 Elsevier Ltd. All rights reserved.

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出版当年[2015]版:
大类 | 2 区 物理
小类 | 1 区 力学 3 区 材料科学:综合 3 区 物理:凝聚态物理
最新[2025]版:
大类 | 2 区 工程技术
小类 | 2 区 材料科学:综合 2 区 力学 2 区 物理:凝聚态物理
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出版当年[2014]版:
Q1 MECHANICS Q1 PHYSICS, CONDENSED MATTER Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
最新[2023]版:
Q1 MECHANICS Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Q2 PHYSICS, CONDENSED MATTER

影响因子: 最新[2023版] 最新五年平均[2021-2025] 出版当年[2014版] 出版当年五年平均[2010-2014] 出版前一年[2013版] 出版后一年[2015版]

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第一作者单位: [1]Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China
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