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Abstract #4949

7T MRI Coils: Streamline Approach in Analysis of Coil Coupling

Jules Vliem1 and Irena Zivkovic1
1Electrical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands

Synopsis

Keywords: High-Field MRI, RF Arrays & Systems, Coupling

Motivation: To gain a better understanding of electromagnetic (EM) interactions in RF coil designs by visualizing their EM flow.

Goal(s): Identifying the dominant coupling mechanism in different coil types through visualization of electric and magnetic fields and power flow.

Approach: Simulating conventional, shielded-coaxial-cable (SCC), twisted pair coils, and square loops (self-decoupled coils) to visualize their EM fields using streamlines.

Results: Diverse coupling behaviors are observed among the coil types, each demonstrating unique dominant mechanisms. A high resemblance in the EM flow between the self-decoupled coil and the SCC and twisted pair coils was found.

Impact: Identifying the dominant coupling mechanism in different coil designs with streamlines can help in adjusting the coil design for maximum interelement decoupling when placed in an array configuration.

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