Anna Hurshkainen, Marc Dubois, Anton Nikulin, Christophe Vilmen, David Bendahan, Stefan Enoch, Stanislav Glybovski, Redha Abdeddaim, “Radiofrequency Coil for Dual-nuclei MR Muscle Energetics Investigation Based on Two Capacitively Coupled Periodic Wire Arrays.” IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, In press (February 2020)
In this paper, we describe a dedicated radiofrequency coil for magnetic resonance imaging and spectroscopy (MRSI) at 4.7 T optimized for investigation of muscle energetics in a human forearm. The coil operating at the Larmor frequencies of protons 1H (200.1 MHz) and phosphorous 31P (81 MHz) is based on two cylindrical periodic structures made of thin metal wires with tips interconnected through structural capacities of printed overlapping patches and sliding electric contacts. By independently exciting two orthogonal eigenmodes of the structure, the coil can be tuned and matched at both frequencies without lumped capacitors and cover the target region of interest for the forearm flexor muscles.
Keywords : Radiofrequency coil, wire array, magnetic resonance imaging, magnetic resonance spectroscopy
Partners : ITMO, AMU (Institut Fresnel & CRMBM) , CNRS (Institut Langevin)