A Single Unit Cell Metasurface for Magnetic Resonance Imaging Applications

This paper describes a method for designing a non-periodic metasurface for use in 1.5T magnetic resonance imaging applications. The use of an inter-digitated capacitive surface combined with a circular radio frequency transceiver coil is shown to improve the magnetic flux density whilst being compact in cross section and thickness. By using a single unit cell structure the magnetic flux density, which is proportional to signal to noise ratio (SNR), was improved by a maximum of 120%. The single unit cell design also offers a more uniform magnetic flux density distribution when compared to periodic metamaterial approaches.