Whole‐brain deuterium metabolic imaging via concentric ring trajectory readout enables assessment of regional variations in neuronal glucose metabolism by Niess, F, Strasser, B, Hingerl, L, Bader, V, Frese, S, Clarke, WT, Duguid, A, Niess, E, Motyka, S, Krššák, M, Trattnig, S, Scherer, T, Lanzenberger, R, Bogner, W