Shape corrections for 3D EIT
Shape corrections for 3D EIT
复制标题
3D EIT 的形状校正
DOI:
10.1088/1742-6596/224/1/012049
复制
发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Paridis K
中科院分区:
文献类型:
--
作者:
Paridis K
Movement of the boundary in biomedical Electrical Impedance Tomography (EIT) has been always a source of error in image reconstruction. In the case of pulmonary EIT, where the patient's chest shape changes during respiration, this is inevitable, so it is essential to be able to correct for shape changes and consequently avoid artifacts. Assuming that the conductivity is isotropic, an assumption that is reasonable for lung tissue but admittedly violated for muscle, the boundary shape up to a Möbius transformation (conformal mapping) as well as the conductivity can theoretically be determined by 3D EIT data. While in two dimensions the space of conformal mappings are infinite dimensional, in the three dimensional case the Möbius transformations are given by a finite number of parameters. In this paper, we concentrate on the three dimensional case and take a linear approximation. We will give results of numerical studies analogous to the two dimensional work of Boyle et al on the effect of electrode movement and shape error in 3D EIT.
影响因子:
2.1
作者:
A. Boyle;W. Lionheart;C. Gomez;A. Adler
通讯作者:
A. Adler