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Abstract #0749

The ultimate intrinsic SNR in a spherical phantom with regard to an open-pole surface current distribution at 9.4T

Andreas Pfrommer1 and Anke Henning1,2

1High-Field MR Center, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany, 2Institute of Physics, Ernst-Moritz-Arndt University Greifswald, Greifswald, Germany

RF coils for human head imaging need to provide access for the human neck and cannot be entirely closed. In this work, we investigate the ultimate intrinsic signal-to-noise ratio (UISNR) in a spherical phantom due to an open-pole surface current distribution, where the generic surface current patterns run on a spherical cap. The influence of the cap’s opening angle ϑ0 on UISNR, parallel imaging performance and on the contribution of curl-free and divergence-free current patterns to UISNR is studied.

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