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Lookup NU author(s): Dr Zaoyang Guo
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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.
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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