Abstract #0389

More than meets the eye: The mixed character of electric dipole coils, and implications for high-field performance

Daniel K Sodickson^1,2, Graham C Wiggins^1,2, Gang Chen^1,2, Karthik Lakshmanan¹, and Riccardo Lattanzi^1,2

¹Center for Advanced Imaging Innovation and Research (CAI2R) and Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States, ²Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, NY, United States

We present a fundamental electrodynamic explanation for the SNR performance of electric dipole antennae at high field. We demonstrate that typical electric dipole coils combine divergence-free and curl-free surface current components, allowing them to exceed the performance limits for either component alone. We also show that z-directed electric dipoles have a strong overlap with ideal current patterns associated with the ultimate intrinsic SNR at high field strength.

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