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Abstract #2775

Soft Surface - EBG Structure to Improve the |H|/|E| Field Ratio of Stripline Coil for 7 Tesla MRI

Gameel Saleh1, Klaus Solbach1, Daniel Erni2, Andreas Rennings3

1High Frequency Technique (HFT), University of Duisburg-Essen, 47048, Duisburg, Germany; 2General and Theoretical Electrical Engineering (ATE), University of Duisburg-Essen, , and CENIDE - Center for Nanointegration Duisburg-Essen, 47048, Duisburg, Germany; 3General and Theoretical Electrical Engineering (ATE), University of Duisburg-Essen,, and CENIDE - Center for Nanointegration Duisburg-Essen, 47048, Duisburg, Germany

In this paper, a multilayer offset EBG structure is introduced as a high surface impedance ground plane to maximize the magnetic field intensity inside the phantom, by suppressing the anti-phase currents on the metallic ground plane. The proposed structure works as a Soft surface with higher surface impedance in the longitudinal direction (like a perfect magnetic conductor PMC), and lower surface impedance in the transversal direction (like a perfect electric conductor PEC). The MRI strip-line coil backed by our EBG structure is successful in exhibiting a stronger H/E field ratio (amounts to 58 %) inside the phantom than the original design using a (PEC) ground plane for the coil.

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Keywords

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