Vijayaraghavan Panda1,2, Sung-Min Sohn1,2, Thomas J Vaughan1,2, 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 . 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 .