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Electromagnetic Field and Radio Frequency Circuit Co-Simulation for Magnetic Resonance Imaging Dual-Tuned Radio Frequency Coils

机译：磁共振成像双调谐射频线圈的电磁场和射频电路协同仿真

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摘要

Electromagnetic (EM) field simulation plays a key role in the design of magnetic resonance imaging radio frequency (RF) coils. However, the values of the components in tuning and matching circuits often need to be iterated repeatedly in the conventional simulation method in order to achieve optimal scattering parameters. This leads to a time-consuming optimization to tune and match RF coils, particularly dual-tuned coils that are comprised of multiple lumped elements. A method combining EM field simulation and circuit simulation was employed in this paper, which can dramatically improve simulation efficiency for the optimization of the values of the lumped elements and corresponding EM field distribution. A systematical theoretical analysis of the co-simulation method was presented. To validate the accuracy and efficiency of the co-simulation method, a comparison study was conducted between the conventional simulation and the proposed co-simulation approaches.
机译：电磁场仿真在磁共振成像射频（RF）线圈的设计中起着关键作用。然而，在调谐和匹配电路中的元件的值通常需要在常规的仿真方法中重复地迭代以便获得最佳的散射参数。这导致调谐和匹配RF线圈（尤其是由多个集总元件组成的双调谐线圈）的费时优化。本文采用了一种将电磁场仿真与电路仿真相结合的方法，可以大幅度提高仿真效率，以优化集总元件的值和相应的电磁场分布。对协同仿真方法进行了系统的理论分析。为了验证协同仿真方法的准确性和效率，在常规仿真和拟议的协同仿真方法之间进行了比较研究。

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