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

Lookup NU author(s): Dr Zaoyang Guo

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Abstract

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.


Publication metadata

Author(s): Guo ZY, You SH, Wan XP, Bićanić N

Publication type: Article

Publication status: Published

Journal: Computers & Structures

Year: 2010

Volume: 88

Issue: 23-24

Pages: 1459-1468

ISSN (print): 0045-7949

ISSN (electronic): 1879-2243

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.compstruc.2008.06.004

DOI: 10.1016/j.compstruc.2008.06.004

Notes: Special Issue: Association of Computational Mechanics – United Kingdom


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