中国医疗设备2011，Vol.26Issue(6)：1-9,27,10.DOI:10.3969/j.issn.1674-1633.2011.06.001
离体软组织弹性的常用测试方法和应用
Measurement of Soft Tissue Elasticity in Vitro-Common Methods and Applications
摘要
Abstract
Elasticity is an important characteristic of soft tissue which can be used for establishment of tissue mechanical model, simulation and analysis of biomechanical systems,diagnosis of discases,and evaluation of new treatment efficacy.From the fundamental knowledge of elasic mechanics and material mechanics,the elasticity of soft tissue can be measured using standard testing methods such as compression,tension,torsion and bending.The advantages of these tests are simple boundary conditions so that intrinsic elastic properties such as Young's modulus, shear modulus or Poisson's ratio can be easily measured.However,because of the requirement of preparation of sample with a regular shape,these tests can be only applied for soft tissue assessment in vitro.With the incorporation of viscoelastic models,these tests can also be used to measure the nolinear elastic and viscous parameters of soft tissues.Because of easy operation,these tests have been widely used to measure the elastic properties of soft tissues in practice.In this paper,we introduce some common techniques for the measurement of soft tissues elasticity in vitro and discuss the advantages and disadvantages of these techniques and corresponding biomechanical models.Finally we use the mechanical test of articular cartilage in vitro as an example to explain the application of these methods in fields of biomedical engineering.关键词
弹性/弹性测量/应力/应变/杨氏模量/剪切模量/泊松比/粘弹性/力学测试/压缩/拉伸/扭转/弯曲/膨胀Key words
elasticity/elasticity measurement/stress/strain/Young's modulus/shear modulus/Poisson's ratio/viscoelasticity/mechanical test/compression/tension/torsion/bending/swelling分类
医药卫生引用本文复制引用
黄燕平,郑永平..离体软组织弹性的常用测试方法和应用[J].中国医疗设备,2011,26(6):1-9,27,10.基金项目
香港研究资助局(PolyU5354/08E)和香港理工大学(J-BB69)支持. （PolyU5354/08E）
