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FIG 1. Proton MR spectroscopy in a patient with left hippocampal seizures and lactate.
A, Single-voxel MR spectrum (TE = 135) of the abnormal left hippocampus shows inverted peak with doublet configuration, corresponding to lactate (L). The relationship between NAA (N) and Cr (C) is normal. The NAA peak is normally lower in the hippocampi as compared with gray matter elsewhere.
B, Single-voxel MR spectrum of the right hippocampus shows no lactate.
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