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The technique of region of interest-based positron emission tomography is limited by its poor reliability and relatively few examined brain regions. In the present study, we compared brain metabolism assessed using fluorine-18-fluorodeoxyglucose positron emission tomography between 14 attention-deficit hyperactivity disorder (ADHD) patients and 15 normal controls with scoliosis at resting state by statistical parametric mapping. Glucose metabolism was decreased in the left parahippocampal gyrus, left hippocampus, left anterior cingulate gyrus, right anterior and posterior lobes of the cerebellum, left superior temporal gyrus, left insula, left medial and middle frontal gyri, right medial frontal gyrus, and left basal ganglia (putamen, amygdala, and caudate nucleus) in children with ADHD. These data suggest that children with ADHD exhibit hypometabolism in various brain regions compared to controls, indicating that ADHD symptoms are unlikely the result of abnormalities in specific areas.