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Abstract #0767

Permittivity-Tunable Ceramic Technology for Largely Improving B1 fields and SNR for Broad MR Imaging Applications

Byeong-Yeul Lee1, Xiao-Hong Zhu1, Hannes M. Wiesner1, Maryam Sarkarat2, Sebastian Rupprecht3, Michael T Lanagan2, Qing X Yang3, and Wei Chen1
1CMRR, Radiology, University of Minnesota, Minneapolis, MN, United States, 2Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA, United States, 3Center for NMR Research, Neurosurgery, Pennsylvania State College of Medicine, Hershey, PA, United States

We present an innovative technique of tunable ultrahigh dielectric constant (tuHDC) ceramics incorporating RF coil(s) for MR imaging applications. The ceramic has a very high permittivity tunability of 2000-15000 by varying the ceramic temperature between few to 40 °C to achieve optimal performance at the nuclide Larmor frequency of interest, resulting in larger B1 field and SNR improvements for 1H MRI at 1.5T clinic scanner and 17O MRSI at 10.5T human scanner. We found a large denoising effect in 17O MRSI, which further boosts the SNR gain. The technology should benefit for biomedical research and clinical diagnosis.

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