使永磁核磁共振成像装置的性能得到提高，为促进其在医疗领域的普及做出贡献。
The result can make contribution for heightening the performance of MRI equipment and promoting its popularization in medical field.
最后，本文以一种小型核磁共振成像装置作为实例，并与有关单位合作，用实验对优化方案进行了验证，证明了本文提出方法的有效性。
At last, the experiment for the mini-device of NMR imaging, which is finished together with the relative company, proves the efficiency of the optimized schemes of pole shape presented in this thesis.
采取了二维有限元法模拟核磁共振成像（MRI）装置的主磁场。
The main magnetic field of Magnetic Resonace Imaging( MRI)device is simulated by using the finite element method.
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