B1+ efficiency of a single-loop dual-frequency surface coil for proton and deuterium or oxygen-17 magnetic resonance imaging at 16.4T

Abstract

We compared the B1 efficiency of a newly developed dual-frequency surface coil operating at proton and low-g X-nuclei frequencies at 16.4T with that of traditional proton coil and X-nuclei coil, respectively. Both simulation and experimental results revealed that the B1 field strength of the new coil was similar to that of traditional coil at deuterium or oxygen-17 frequency though was significantly reduced at proton frequency, while their B1 distributions were identical for both proton and deuterium/oxygen-17 frequencies. The efficacy of the new coil for in-vivo deuterium metabolic imaging applications was demonstrated in normal and tumor rat brains.