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Figure 1. (a) A short echo time spectrum from a low grade tumour showing no contrast enhancement as evidenced by imaging and water 1H-MRS. The major resonances are indicated: Cho, choline; Cre, creatine; and NAA, N-acetylaspartate. (b). A short echo time spectrum from a histologically verified contrast enhancing high grade glioma. The most prominent peaks observed are the lipid methylene and methyl signals, labelled as lip(-CH2-) and lip(-CH3), respectively.
