, Volume 11, Issue 5, pp 393-398
Date: 01 Oct 2009

New insights into attention-deficit/hyperactivity disorder using structural neuroimaging

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This article reviews recent advances in structural neuroimaging in attention-deficit/hyperactivity disorder (ADHD). Observational studies have found treatment with psychostimulants to be associated more closely with dimensions of some brain structures in typically developing children than in those found in treatment-naïve children with ADHD. Novel analytic approaches allow for greater precision in the definition of brain regions that are most compromised in ADHD, with meta-analyses highlighting compromise of the basal ganglia. Cortical changes, particularly in the lateral prefrontal and parietal cortex, are also commonly reported, but with less consensus on the exact location of structural change. Anomalies in the shape of subcortical structures, specifically of the basal ganglia, hippocampus, and amygdala, implicate frontostriatal loops and the limbic system in the disorder. Finally, longitudinal data suggest that ADHD in childhood may be characterized by a delay in cortical maturation and that different clinical outcomes may be associated with different developmental trajectories in adolescence and beyond.