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 Atalar^1,4, 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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