Abstract #3536

Zeroth-Order Resonator with Stepped Impedance for 7T Magnetic Resonance RF Coil

Vijayaraghavan Panda^1,2, Sung-Min Sohn^1,2, Thomas J Vaughan^1,2, and Anand Gopinath¹

¹Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States, ²Department of Radiology, Center for Magnetic Resonance Research, Minneapolis, MN, United States

A planar structure based on a metamaterial transmission line Zeroth Order Resonance (ZOR) and Stepped Impedance Structure is designed as a MRI RF coil element. It generates high uniform magnetic field in the 7T Magnetic resonance imaging (MRI) system at 298 MHz, which improves the signal to noise ratio and the quality of the images. The full wave simulation and measurements show comparable results with the microstrip TEM RF coil element [1]. Additionally, it can generate uniform and high H-field intensity for any physical length of the coil as the resonance of the ZORs is independent of its length [2].

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