Fig. 3
From: Magnetic resonance spectroscopy in pediatric brain tumors: how to make a more confident diagnosis
An 11-year-old male presented with a fever and disturbed conscious level. a–c A left frontotemporal thin-walled cystic lesion; the wall is mildly hyperintense on T1 and hypointense on T2 with moderate peripheral enhancement. d 2D short TE 26 ms echo spectrum in the lesion shows significant amino acid peak at 0.9 ppm, lactate peak at 1.4 ppm, acetate peak 1.9 ppm, pyruvate/succinate not assigned peak at 2.4 with no elevation of Cho, and dwarfing of other metabolites. e 2D PRESS intermediate TE 144 ms shows maximum metabolite ratios, Cho/Cr = 1.7, Cho/NAA = 1, Cho/NAA+Cr = 0.7, minimal NAA/Cho = 1, NAA/Cr = 1.5. The conventional and MRS features are suggestive of pyogenic brain abscess; pathologically proven