摘要
系统地介绍了用于磁共振成像系统中具有轴向磁场的圆柱型表面梯度线圈的设计与优化．应用基本场理论，分析产生所需梯度分布场的无限长连续分布的柱面电流系统，并构造相应的线圈结构．通过对该线圈各项指标的综合优化，设计出用于ＬＭＷ－４００型常导磁体上的梯度线圈，实测与设计指标相当。
A general method for designing magnetic field gradient coils on a cylindrical surface with an axial magnetic field to be used in NMR imaging is suggested and developed.The method utilizes the preliminary field theory to exactly calculate the infinite continuous cylindircal current sheets and then to construct each coils.After optimizing all the parameters,the designed coils are used in lMW-400 resistive magnet.The result of measurement is in good agreement with the predicted values.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1996年第7期34-39,共6页
Journal of Shanghai Jiaotong University
关键词
梯度线圈
表面电流密度
NMR
成像
gradient coils
surface current density
gradient fields
stream function
