A FEM-based direct method for material reconstruction inverse problem in soft tissue elastography

被引：24

作者：

Guo, Zaoyang ^{[1
,2
]}

You, Shihui ^{[2
]}

Wan, Xiaoping ^{[2
]}

Bicanic, Nenad ^{[1
]}

机构：

[1] Univ Glasgow, Dept Civil Engn, Glasgow G12 8LT, Lanark, Scotland

[2] Jiujiang Univ, Coll Mech Engn, Jiujiang 332005, Jiangxi, Peoples R China

来源：

COMPUTERS & STRUCTURES | 2010年 / 88卷 / 23-24期

关键词：

Soft tissue elastography; Inverse problem; FEM; Material reconstruction; LINEAR ELASTIC PROPERTIES; CONSTITUTIVE MODEL; ANNULUS FIBROSUS; MODULUS; COMPOSITES; DAMAGE;

D O I：

10.1016/j.compstruc.2008.06.004

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A novel finite element method (FEM) based direct method is developed for the material reconstruction inverse problem in soft tissue elastography The solution is obtained by minimising an objective function defined as the sum of the square of the residual norms at all nodes where the nodal residual norm is defined as a linear function of elasticity parameters of the associated elements The measured deformation is enforced directly and satisfying the equilibrium at every node is utilised as the optimisation objective As a result the soft tissue elastography can be obtained directly by solving the resulting set of linear equations (C) 2008 Elsevier Ltd All rights reserved

引用

页码：1459 / 1468

页数：10

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