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中文摘要：
目的： 为了求解磁感应断层成像（magnetic induction tomography, MIT）技术中的涡流问题,以获得MIT正问题的有效解法。方法： 推导了对应于MIT技术的涡流场的微分方程及其边界条件,采用有限元方法计算了场域内一些不同电导率或位置的扰动目标下的位函数。结果 ：仿真计算结果与单线圈MIT系统的测量结果相吻合。结论： 本文提出的有限元计算方法适用于生物组织磁感应断层成像技术,是解决MIT正问题的一个有效方法,更完善的仿真计算模型有望进一步提高计算精度。
英文摘要：
Objective To solve the eddy current problem or the forward problem in magnetic induction tomography（MIT）. Methods Differential equation and its boundary condition of eddy current problem in MIT were presented; finite element method was used to calculate the magnetic vector potential of perturbations with different conductivities or positions. Results The simulation results agreed well with the measured ones from a single receiving coil MIT system. Conclusion The good agreement of the simulated data with the measured ones demonstrates the applicability of the finite element method for biomedical applications and a solution of the forward problem in MIT, a more sophisticated simulation model may further improve the calculation accuracv.
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同项目期刊论文
Preliminary Simulations on Magnetic Induction Tomography of the Brain Based on Finite Element Method
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