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(a) In vivo spectra, at the eight (TE1, TE2) pairs of PRESS, from subjects with astrocytoma (grade II) and oligoastrocytoma (grade III) are shown together with voxel positioning (size 23×23×23 mm3) and LCModel fitting results. Spectra are normalized with respect to water signals. (b) Monoexponential T2 fitting of LCModel estimates versus TE.
