Solving the forward problem of magnetoacoustic tomography with magnetic induction by means of the finite element method.
Solving the forward problem of magnetoacoustic tomography with magnetic induction by means of the finite element method.
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DOI：
10.1088/0031-9155/54/9/005
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发表时间：
2009-05-07
影响因子：
3.5
通讯作者：
He B
中科院分区：
文献类型：
--
作者：
Li X;Li X;Zhu S;He B
磁感应磁声层析成像（MAT-MI）是最近提出的一种成像模式，用于成像生物组织的电阻抗。它结合了电阻抗断层成像的良好对比度和超声的高空间分辨率。本文采用有限元方法研究了三维MAT-MI正问题。介绍了描述正问题的相应有限元公式。在有限元分析中，首先对电导率值接近生物组织的物体进行磁感应。刺激磁场被模拟为从三维线圈产生的磁场。然后模拟了相应的声源和声场。采用不同几何规格的同心球和偏心球电导率模型进行了计算机模拟研究。此外，有限元分析的网格尺寸进行了评估，模型校准和相应的声场的评估。
Magnetoacoustic Tomography with Magnetic Induction (MAT-MI) is a recently proposed imaging modality to image the electrical impedance of biological tissue. It combines the good contrast of electrical impedance tomography with the high spatial resolution of sonography. In this paper, three-dimensional MAT-MI forward problem was investigated using the finite element method (FEM). The corresponding FEM formulas describing the forward problem are introduced. In the finite element analysis, magnetic induction in an object with conductivity values close to biological tissues was first carried out. The stimulating magnetic field was simulated as that generated from a three-dimensional coil. The corresponding acoustic source and field were then simulated. Computer simulation studies were conducted using both concentric and eccentric spherical conductivity models with different geometric specifications. In addition, the grid size for finite element analysis was evaluated for model calibration and evaluation of the corresponding acoustic field.
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影响因子：
3.5
作者：
Xu, Y;He, B
通讯作者：
He, B
影响因子：
3.2
作者：
Ider, YZ;Onart, S
通讯作者：
Onart, S
影响因子：
4.6
作者：
SUROWIEC, AJ;STUCHLY, SS;SWARUP, A
通讯作者：
SWARUP, A
影响因子：
2.4
作者：
Griffiths, H
通讯作者：
Griffiths, H
影响因子：
4.6
作者：
Li, Xu;Xu, Yuan;He, Bin
通讯作者：
He, Bin