Keywords: RF Arrays & Systems, Non-Proton7T MRI has great potential to enhance the sensitivity to 23Na, allowing access to functional and anatomical information when combined with proton imaging. We introduce an RF coil design of a 16-channel Tx/Rx head array composed of eight proton dipoles and eight overlapping sodium loops for 7T. The initial results were acquired on phantoms with comparable performance for both nuclei, and a 40% B1+ gain was reported in sodium channels against the commercial coil. All elements were well-decoupled (-7.2dB to -36dB) without implementation of multiple layers or RF shield, paving the way for future simultaneous 1H/23Na MRI acquisition at 7T.
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