中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (20): 3155-3160.doi: 10.3969/j.issn.2095-4344.0319

• 肌肉肌腱韧带组织构建 tissue construction of the muscle, tendon and ligament • 上一篇    下一篇

肌肉中剪切波速度受力影响的有限元分析

季仟亿1,陈  晓1,2,徐  畅1   

  1. 南京信息工程大学,1电子与信息工程学院,2大气环境与装备技术协同创新中心,江苏省南京市  210044
  • 收稿日期:2018-04-19 出版日期:2018-07-18 发布日期:2018-07-18
  • 通讯作者: 陈晓,博士,教授,南京信息工程大学电子与信息工程学院,江苏省南京市 210044;南京信息工程大学大气环境与装备技术协同创新中心,江苏省南京市 210044
  • 作者简介:季仟亿,女,1993年生,江苏省启东市人,汉族, 南京信息工程大学在读硕士,主要研究方向为剪切波弹性成像。
  • 基金资助:

    江苏省自然科学基金项目(BK20161536);江苏省高校优势学科Ⅱ期建设工程资助项目

Finite element analysis of shear wave velocity influenced by force in muscle

Ji Qian-yi1, Chen Xiao1, 2, Xu Chang1   

  1. 1College of Electronic & Information Engineering, 2Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China
  • Received:2018-04-19 Online:2018-07-18 Published:2018-07-18
  • Contact: Chen Xiao, Ph.D., Professor, College of Electronic & Information Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China
  • About author:Ji Qian-yi, Master candidate, College of Electronic & Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China
  • Supported by:

    the Natural Science Foundation of Jiangsu Province, No. BK20161536; the Second-Phase Construction Engineering Project of Dominant Subject in Jiangsu Provincial Universities

摘要:

文章快速阅读:

文题释义:
剪切波速度:剪切波弹性成像技术是一项非侵入性的诊疗手段,可以用于测量肌肉组织的弹性性质,实验证明在不同的受力情况下肌肉的剪切模量会发生改变,进而改变剪切波速度。因而通过测量肌肉中剪切波速度,可以量化肌肉中的受力情况。
有限元分析:利用有限元可以建立肌肉、骨骼、内脏等模型,可以模拟生物体的生命活动,求解复杂边界问题、获得解析解,通过有限元法可以避免对人体的伤害,且可以反复进行仿真,成本较低。因而该文将利用有限元仿真软件ANSYS,建立生物体肌肉模型,模拟肌肉受力情况,为肌肉中力分布问题的解决提供理论基础。
摘要
背景
:肌肉中力分布的问题一直是研究的热点,且体外实验证明人体肌肉杨氏模量受外力影响变化明显,但活体生物肌肉中检测力的分布难度较大。剪切波弹性成像技术是一项有前景的非侵入性的成像诊疗手段,近年来被引入肌肉受力问题的研究中。
目的:通过建立一个超弹性有限元肌肉模型证明剪切波速度和肌肉受力之间的关系,为剪切波弹性成像技术用于检测肌肉中力分布问题提供理论基础。
方法:根据体外实验数据,建立超弹性肌肉有限元模型,轴向施加恒定荷载,研究不同受力情况下肌肉组织中剪切波速度变化。
结果与结论:仿真结果显示随着荷载增大剪切波速度从6.1 m/s增加至13.1 m/s,且外力与速度线性相关,证明了剪切波弹性成像技术,可通过测量剪切波速度量化肌肉中里的分布。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0001-7719-0939(季仟亿)

关键词: 有限元, 超弹性, 剪切波弹性成像, 肌肉, 单轴拉伸, 生物力学, 渡越时间算法, 应力

Abstract:

BACKGROUND: Force distribution in muscle is still a hotspot. The in vitro experiments show that the Young’s modulus of human muscle changes obviously under the influence of external force. However, it is difficult to detect force distribution in vivo. Shear wave elastography is a promising non-invasive imaging diagnostic method, which has been introduced into the study on muscle force distribution.
OBJECTIVE: To testify the relationship between shear wave velocity and stress by establishing the hyperelasticity finite element model for muscles, so as to provide a theoretical basis for the application of shear wave elastic imaging to detect the force distribution in muscle.
METHODS: The hyperelasticity finite element model was established based on in vitro experimental data. The shear wave speeds in muscle tissues under tension were studied by applying different statistic loads in axial direction.
 RESULTS AND CONCLOSION: The results showed that the shear wave speeds increased from 6.1 m/s to 13.1 m/s as the load increased. The speed was linearly related to the load. Therefore, shear wave elastography can measure the force distribution in muscle by measuring shear wave speeds.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words:  Finite Element Analysis, Biomechanics, Tissue Engineering, Dominant Discipline Construction Project at Phase II in Universities of Jiangsu Province

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