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Abstract #4506

Dielectric transreceiver resonant coil using an ultrahigh εr ceramic disk for 17O imaging at 10.5T and comparison with a single-loop surface coil

Xin Li1, Hannes M. Wiesner1, Xiao-Hong Zhu1, and Wei Chen1
1Center for Magnetic Resonance Research (UMN), Minneapolis, MN, United States


We integrated a permittivity-tunable ultrahigh dielectric constant (uHDC) disk with copper film shielding (for tuning) and a pick-up coil (for matching) for performing 17O MRS imaging (MRSI) at 10.5T. We conducted a phantom 17O imaging study to compare the coil performance and signal-to-noise ratio between the newly designed uHDC resonator with a surface loop coil of the same diameter as the disk. The results indicate a better performance of the uHDC resonator at the room temperature(21 Co), and a much better performance when the ceramic disk temperature was cooling to 16 Co, owing to a large denoising effect.

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