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Abstract #0732

A New Coil Element for Highly-Dense Transmit Arrays : An Introduction to Non-Uniform Dielectric Substrate (NODES) Antenna

Alireza Sadeghi-Tarakameh1, Steve Jungst2, Xiaoping Wu2, Mike Lanagan3, Gregor Adriany2, Gregory J. Metzger2, Pierre-Francois Van de Moortele2, Kamil Ugurbil2, Ergin Atalar1,4, and Yigitcan Eryaman2

1Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey, 2Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, 3Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, United States, 4National Magnetic Resonance Research Center (UMRAM), Ankara, Turkey

Ultra-high field (UHF)-magnetic resonance imaging (MRI) provides numerous benefits such as a significant increase in signal-to-noise ratio (SNR) however, the local specific absorption rate (SAR) becomes a limiting factor in many applications. Utilizing a proper TxArray coil with an adequate number of elements and improved SAR performance may provide a good solution for this issue. In this work, we propose to use a short antenna with a Non-uniform Dielectric Substrate (NODES) which provides an opportunity to design a highly-dense TxArray with improved SAR performance.

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