Correcting for variability in mesh geometry in finite element models
Correcting for variability in mesh geometry in finite element models
复制标题
修正有限元模型中网格几何形状的变化
DOI:
10.1088/1742-6596/224/1/012021
复制
发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Adler A
中科院分区:
文献类型:
--
作者:
Adler A
We show that variability in the finite element model (FEM) geometry in the EIT forward model can result in image artefacts in the reconstructed images. We explain these artefacts as the result of changes in the projection of the anisotropic conductivity tensor onto the FEM system matrix. This introduces anisotropic components into the simulated voltages, which cannot be reconstructed onto an isotropic image, and appear as artefacts. In order to address this problem, we show that it is possible to incorporate a FEM vertex movement component into the formulation of the inverse problem. These results suggest that it may be important to consider artefacts due to FE mesh geometry in the formulation of EIT image reconstruction.
影响因子:
3.2
作者:
Sungho Oh;T. Tang;R. Sadleir
通讯作者:
R. Sadleir