声辐射力所致粘弹性组织应变的多物理场 有限元分析研究
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国家自然科学基金项目(81027006)

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The Multiphysics Finite Element Analysis of Viscoelastic Tissue Strain Caused by Acoustic Radiation Force
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    摘要:

    目前已经有多种超声弹性成像方法在临床上得到了广泛应用,然而通常情况下,这些方法均是基于组织为纯弹 性的假设,因此忽略了组织粘性对测量结果的影响。本文利用有限元分析的方法,分别用粘弹性力学的理论计算得到软 组织位移形变分布以及声回波分布等。这对于超声粘弹性成像的理论分析具有重要的辅助作用,可以研究模型组织在不 同粘弹性参数和不同频率的声压刺激下对粘弹成像的影响。有限元分析的结果表明,在进行弹性成像研究时不能忽略组 织粘性的影响。

    Abstract:

    Recently several ultrasound-based techniques for the estimation of soft tissue elasticity are widely used in clinical, but these methods are usually based on the theory that the organization is pure elastic and neglect the viscosity of the organization. To calculate the displacement and strain profiles based on the theory of mechanics of viscoelasticity, the finite element analysis method is applied. This method plays an important assistant role in theoretical analysis of viscoelastic imaging, different condition of soft tissues and effects of mechanical parameters on soft tissues. Using this method, different viscoelastic parameters of soft tissues and various acoustic stimulus can be studied. Finite element analysis results show that the organization’s viscosity can’t be ignored in the study of elasticity imaging.

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引文格式
明 妍,王丛知,曾成志,等.声辐射力所致粘弹性组织应变的多物理场 有限元分析研究 [J].集成技术,2013,2(5):48-52

Citing format
MING Yan, WANG Cong-zhi, ZENG Cheng-zhi, et al. The Multiphysics Finite Element Analysis of Viscoelastic Tissue Strain Caused by Acoustic Radiation Force[J]. Journal of Integration Technology,2013,2(5):48-52

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  • 在线发布日期: 2013-10-28
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