T2 relaxations times for the downfield metabolites in human brain 1H MR spectra were estimated at 9.4 T. A possible new peak at 8.35 ppm with rapid T2 decay is reported. Due to the use of a non-water suppressed MRS method, the T2 of slowly exchanging peaks could be assessed. The shorter T2 relaxation times in the downfield compared to the upfield spectral areas leads us to suspect a macromolecular contribution, while also exchange effects may contribute to the short apparent T2s.
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