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Abstract #1538

Investigation of correlation between surface current and coupling using conventional coils and shielded coaxial cable coils operating at 7T

Giovanni Costa1, Sadri Güler2,3, Peter Baltus1, Maarten Paulides1, and Irena Zivkovic1
1Department of Electrical Engineering, Technology University of Eindhoven, Eindhoven, Netherlands, 2Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark, 3Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Copenhagen, Denmark


One of the major challenges in the design of multichannel arrays for UHF MRI is minimizing coupling between elements. Shielded-coaxial-cable (SCC) coils have been recently proposed as highly decoupled elements per se: however, the decoupling mechanism of SCC coils is still not determined. In this work, we examined the relationship between coupling, surface current density uniformity, and the total current on coil conductor through measuring and simulating three different 2-coils arrays. While no correlation was observed between surface current density uniformity and interelement coupling, a negative correlation was observed between the coupling and the total current on coil conductor.

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