A metasolenoid-like resonator for MRI applications

In this work we propose and study via numerical simulation a new metamaterial-inspired device for MRI. The proposed device is a one-dimensional periodic structure formed by multiple inductively-coupled split-loop resonators (SLRs). The whole structure at the resonance of its fundamental eigenmode has a homogeneous magnetic field in a hollow surrounded by the split-loops. It has been shown that the structure can be used as a wireless radio-frequency coil for magnetic resonance imaging (MRI) of a human arm located inside the SLRs. In order to tune the resonance to the operational (Larmor) frequency 63.8 MHz of a 1.5-Tesla scanner, each SLR was loaded to a structural capacity of printed metal strips.