Xin, LijingGambarota, GiulioCudalbu, CristinaMlynárik, VladimírGruetter, Rolf2013-04-232013-04-232013-04-23201310.1007/s10334-013-0378-3https://infoscience.epfl.ch/handle/20.500.14299/91727WOS:000327438700005OBJECT: To determine the single spin-echo T 2 relaxation times of uncoupled and J-coupled metabolites in rat brain in vivo at 14.1 T and to compare these results with those previously obtained at 9.4 T. MATERIALS AND METHODS: Measurements were performed on five rats at 14.1 T using the SPECIAL sequence and TE-specific basis-sets for LCModel analysis. RESULTS AND CONCLUSION: The T 2 of singlets ranged from 98 to 148 ms and T 2 of J-coupled metabolites ranged from 72 ms (glutamate) to 97 ms (myo-inositol). When comparing the T 2s of the metabolites measured at 14.1 T with those previously measured at 9.4 T, a decreasing trend was found (p < 0.0001). We conclude that the modest shortening of T 2 at 14.1 T has a negligible impact on the sensitivity of the (1)H MRS when performed at TE shorter than 10 ms.CIBM-AITT-2 relaxation timeCoupled spin systemsBrain metabolitesProton magnetic resonance localized spectroscopytext::journal::journal article::research article