A Three Dimensional Calderon-Based Method for EIT on the Cylindrical Geometry.
A Three Dimensional Calderon-Based Method for EIT on the Cylindrical Geometry.
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DOI：
10.1109/tbme.2020.3039197
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发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
Mueller JL
中科院分区：
文献类型：
--
作者：
Shin K;Ahmad SU;Mueller JL
电阻抗层析成像（EIT）是一种成像方式，其中由施加在边界上的电流产生的电压数据用于重建内部的电导率分布。本文提出了一种新的直接（非迭代）的圆柱几何EIT三维重建算法。该算法基于Calderón的方法[Calderón， 1980]，并对圆柱体边界上的两行或四行电极上收集的数据实施。仿真和实验数据验证了该方法在电极平面和z方向上定位不均匀性的有效性。仿真和实验结果表明，该方法在垂直z方向上具有良好的空间分辨率和计算效率，可以有效地识别面内和近面外非均匀性。
Electrical impedance tomography (EIT) is an imaging modality in which voltage data arising from currents applied on the boundary are used to reconstruct the conductivity distribution in the interior. This paper provides a novel direct (noniterative) 3-D reconstruction algorithm for EIT in the cylindrical geometry. The algorithm is based on Calderón’s method [Calderón, 1980], and is implemented for data collected on two or four rows of electrodes on the boundary of a cylinder. The effectiveness of the method to localize inhomogeneities in the plane of the electrodes and in the z-direction is demonstrated on simulated and experimental data. The results from simulated and experimental data show that the method is effective for distinguishing in-plane and nearby out-of-plane inhomogeneities with good spatial resolution in the vertical z direction with computational efficiency.