磁共振成像(MRI)纵向梯度线圈的研究  

The research of longitudinal direction gradient coil in MRI

作　　者：贺强[1] 俎栋林[1] 宋枭禹[1] 包尚联[1] 

机构地区：[1]北京大学重离子物理研究所,北京100871

出　　处：《中国医学物理学杂志》2002年第1期9-11,共3页Chinese Journal of Medical Physics

基　　金：国家自然科学基金项目(19675005)

摘　　要：本文根据MRI对纵向梯度磁场的强度及其线性度要求和现有试验条件(主要是电流源)设计了一个纵向梯度线圈。并且根据理论计算得到的参数加工了一个线圈,建立了一套测量系统,对梯度磁场做了精密测量,试验结果与理论结果进行比较,符合较好。证明了理论设计的有效性和普遍适用性。In this paper,we design a longitudinal direction gradient coil,which satisfies the requirements of the intensity and lin-earity of gradient magnetic field and the existing experiment conditions,such as current supply etc.According to the theoretical calculation result,we manufactured a simulation coil.In order to measure the gradient magnetic field,we set up a set of mea-surement system.As a result,we discover that the result of experiment is consistent with the theoretical result.It demonstrates the validity and the universal applicability of theoretical design.

关 键 词：MRI 线圈设计 梯度磁场 Maxwell对 

分 类 号：R445.2[医药卫生—影像医学与核医学]