基于Ansoft的台式磁共振成像仪双平面梯度线圈的有限元分析

摘要

目的:采用Ansoft软件对台式磁共振双平面梯度线圈进行磁场分析和模拟仿真,为梯度线圈的设计和制作提供技术支持.方法:采用设计梯度线圈时得到的线圈绕线中的点数据,设计梯度线圈的Ansoft三维模型,并修改模型设计过程中出现的一些不理想的点数据;设计梯度线圈模型的各种参数,待系统自检成功后,进行梯度线圈的模拟仿真和结果分析.结果:通过三维Ansoft线圈模型的制作、后处理和模拟仿真分析,得到了均匀性很好的纵向梯度磁场和横向梯度磁场模拟图,梯度线圈能够产生具有良好均匀性和线性度的梯度磁场分布.结论:通过梯度线圈的三维Ansoft磁场模拟仿真,可以为梯度线圈的设计和制作提供一定的支持和参考,更好的优化、设计和制作高性能的双平面梯度线圈.%Objective: To analyze and simulate the magnetic in bi-planar gradient coils by using Ansoft, and give some support in designing and producing the bi-planar gradient coils. Methods: Make an Ansoft 3D gradient coil model by taking the points data from Matlab calculation, and modify some data points by manual operation, design the model's parameters, after being successfully checked by the Ansoft software, the gradient coils' simulation will be generated. Results:Well simulation figures have been got by simulating to the 3D Ansoft bi-planar gradient coils, the gradient coils can generate well magnetic with high homogeneity and linearity. Conclusions: Through the simulation to the 3D Ansoft gradient coils, we can give some certain supporting to the gradient coils designing and producing, in order to get high performance bi-planar gradient coils.