A Metasurface for Multi-Nuclear Magnetic Resonance Imaging Applications at 1.5T

This paper will describe a novel method to achieve multi-nuclear imaging for 1.5T MRI systems using a combination of a surface coil and metasurface. An inter-digitated capacitive metasurface with a dual loop radio frequency (RF) transceiver coil is proposed to achieve dual band imaging for a single RF feed. Fluorine nuclei
¹⁹
F and hydrogen nuclei
¹
H are focused of this study, whose resonant (Larmor) frequencies are 60.08MHz and 63.85MHz respectively when used in 1.5T MRI. Simulation results indicate the RF magnetic flux density, B1+ is increased by a maximum of 11% at 60.08MHz on
¹⁹
F phantom surface, and 1080% at 63.85MHz on
¹
H phantom surface when compared to a single resonance RF surface transceiver coil.