Abstract #1498

Improved B1+ efficiency of a dipole antenna equipped with high dielectric constant (HDC) materials at 10.5T

Myung Kyun Woo¹, Lance DelaBarre¹, Russell Lagore¹, Steve Jungst¹, Qing Yang², Bei Zhang³, Sebastian Rupprecht², Riccardo Lattanzi³, Mike Lanagan², Maryam Sarkarat², Kamil Ugurbil¹, and Gregor Adriany¹

¹Center for Magnetic Resonance Research, Minneapolis, MN, United States, ²Pennsylvania State University, Hershey, PA, United States, ³Center for Biomedical Imaging, New York, NY, United States

We evaluated the performance of 10.5T RF coils composed of dipole antennas and high dielectric constant (HDC) ceramic materials placed in close proximity to the dipole antenna. We investigated the impact of the location of the HDC material relative to the dipole antenna. Both simulations and experimental verification indicate that a counterintuitive “Flipped” geometry positioning the dipole between the HDC material and the sample shows notable improvement in terms of the B1+ efficiency. We suggest further exploration of this new setup for ultra-high field (UHF) transmit arrays.

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