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Relationships between percentage changes in prefrontal NAA levels over the 4-week treatment period and the total number of negative urine results in CDP-choline-treated MA-dependent patients. Scatter plots were depicted based on 12 CDP-choline-treated patients whose second follow-up MRS scan at 4 weeks was available. CDP-choline, cytidine-5′ diphosphate choline; MA, methamphetamine; NAA, N-acetyl-aspartate/N-acetyl-aspartyl glutamate.
