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Subgroup averages of MFC and R2*. A, MFC and R2* parametric maps for 27 control subjects, 10 ADHD patients with a history of psychostimulant treatment (ADHD-medicated subgroup), and 12 medication-naïve ADHD patients (ADHD-nonmedicated subgroup). Qualitative differences between control subjects and ADHD subgroups are visible only on MFC maps. B, ROIs (green) used to mask parametric maps. CN = caudate nucleus, GP = globus pallidus, PUT = putamen, THL = thalamus.
