Compact Metamaterial-based Coil Element for Combined ¹H/²³Na MRI at 7T

High static magnetic flux densities in the field of magnetic resonance imaging (MRI) allow X-nuclei-based imaging and spectroscopy as well as the utilization of electromagnetic metamaterials. A compact dual-tuned coil element based on a metamaterial transmission line which achieves a quarter-wave resonance at the two distinct operating frequencies of the hydrogen and sodium nuclei is presented. In addition, first combined ¹ H/²³Na MRI measurement results from a structured phantom are shown and discussed. CA Svejda, Rennings, Erni