猕猴脑部定制多通道接收线圈的仿真设计

The simulation design of a multi-channel receive-only coil for a given macaque

目的对某一特定猕猴设计一款高填充系数、高信噪比的多通道接收线圈,并通过仿真验证其可行性。材料与方法通过电磁场及高速电路仿真软件,对线圈的形状、位置、线圈间的去耦、线圈的调谐匹配等进行仿真,进而得出最优的线圈设计。结果利用LC去耦网络及重叠面积去耦法完成了四通道线圈去耦仿真,并由此确定线圈的形状位置以及电路的各项参数。结论本文通过仿真验证了对某一特定猕猴设计一款定制多通道接收线圈的可行性,并得到一系列设计参数,为后续的线圈制作以及实际线圈的电路调试等简化设计流程,降低研发成本。

Objective:In this study,a multi-channel receive-only coil with high filling coefficient and SNR(signal-to-noise ratio)was designed for a given macaque head model.Furthermore,the feasibility of the design was examined using simulation test.Materials and Methods:We use electromagnetic field and high-speed circuit simulation software to examine the tuning and the decoupling effect of the multi-channel coils and to optimize our design.Results:We calculated the decoupling effects of four-channel coil with LC-decoupling network and overlapping method,and further confirmed the final design and documented the electronic characters of the receive-only coil.Conclusions:This paper illustrated the feasibility to design a multi-channel receiver coil for a given macaque with simulation test.In addition,the parameters of our design could provide a protocol for other coil designs,which could reduce the research cost.