Brain MRI in obsessive-compulsive disorder.

Magnetic resonance imaging (MRI) brain scans were performed on 12 patients with obsessive-compulsive disorder and 12 healthy controls. Measurements of the area of the head of the caudate nucleus, cingulate gyrus thickness, intracaudate/frontal horn ratio, and area of the corpus callosum did not differ between the two groups. These limited data do not support the presence of a consistent gross brain structural abnormality in obsessive-compulsive disorder. Further studies using other anatomic measurements and other brain structural imaging techniques are warranted.