摘要
核磁共振成像原理要求在相当大区域内产生极高均匀度的强磁场，其优化设计是一个非线性病态逆问题．本文主要研究高精度的快速场谱分析计算方法，合理选择目标函数对优化过程的影响，以及能够进行全局优化，且可剔除在数值上或技术上不稳定优化解的优化方法．文章最后给出了实例计算结果．
The principlc of MRI requires strong magnetic field of cxtrcmcly high homogcneity within a relatively large region. Its optimization is a nonlinear ill-conditioned inverse problem. This paper focuses on precise and fast method for field and field spectral calculation, influcnccs of objcctive function on the optimization efficiency, and global optimization method which will refuse numerical and physical instable solutions. practical example is give at the end.
出处
《湖北工业大学学报》
1994年第S1期1-8,共8页
Journal of Hubei University of Technology
