磁谐振成像系统中高温超导线圈的研制

High-Temperature Superconductors Coil in Nucleus Magnetic Resonance Imagine

将混合位积分方程与矩量法结合 ,分析了用于磁谐振成像系统中的高温超导螺旋型接收线圈的谐振特性 ,设计了用于 0 2T和 0 5T磁谐振成像系统中的接收线圈 .采用分析高温超导材料高频特性增强的二流体模型计算了超导材料的电导率 ,模拟结果与测试结果吻合较好 .同时 ,用矩量法分析了两个螺旋线圈之间的耦合及近场特性 。

The mixed potential integral equation is applied to calculate the resonant properties of high temperature superconductors spiral coil in magnetic resonance imagine. The method is used to design the coil in 0 2 T and 0 5 T magnetic resonance imagine system. The enhanced two fluid model is used to obtain the radio frequency parameters of high temperature superconductors. The simulated results are in good agreement with measured data. In addition, the coupling between two spiral coils is analyzed. It is important to phased array in nucleus magnetic resonance imagine.