Here we present the very first 31P MRS data in the human tongue at 7T. Three different receive coils were designed and evaluated to compare their performance: two each inside the mouth: a loop and also a saddle coil and a 3-channel loop array positioned externally. The transmit setup consists of an integrated 31P body birdcage coil for 31P transmit and an array of 8 1H dipoles for image registration. The loop coil seems to outperform the other two coils albeit that signals may originate from jaw. For voxels inside the tongue, relatively high phosphomonoesters were observed in all volunteers.
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