Three-dimensional optimization of correction iron pieces for open high field MRI system
Three-dimensional optimization of correction iron pieces for open high field MRI system
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DOI：
10.1109/tasc.2004.831019
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发表时间：
2004-06-01
影响因子：
1.8
通讯作者：
Tazaki, H
中科院分区：
文献类型：
--
作者：
Kakugawa, S;Hino, N;Tazaki, H
我们开发了一种用于开放式高场（0.7 T）MRI系统的新磁体。为了使视场内的磁场均匀化，提出了一种确定大校正铁片初始位形的优化方法。在我们的方法中，我们结合线性规划（LP）和三维磁场有限元分析，并使用LP的解析公式，我们计算场谐波由于磁化铁的体积。
We have developed a new magnet for open high field (0.7 T) MRI systems. In order to homogenize magnetic fields in the field of view, an optimization method to determine initial configurations of large correction iron pieces was developed. In our method, we combined linear programming (LP) and 3D magnetic FEA and, using analytic formulae for LP, we computed field harmonics due to the volume of magnetized iron.