The effect of clozapine on caudate nucleus volume in schizophrenic patients previously treated with typical antipsychotics.

Typical antipsychotics have been reported to enlarge the caudate nucleus in schizophrenic patients. The atypical antipsychotic, clozapine, is associated with a decrease in caudate size in patients previously treated with typical antipsychotics. The present study investigates whether a change in caudate volume after switching from treatment with typical antipsychotics to treatment with clozapine is related to improvement in symptoms or tardive dyskinesia (TD).

Frontal lobe damage and thalamic volume changes.

The aim of this study was to investigate whether frontal lobe damage affects thalamic volume in humans. Ipsilateral and contralateral thalamic areas were measured in 0.5T T1-weighted sagittal magnetic resonance images in 12 patients, first at the time of their surgery for relief of a unilateral frontal lobe brain tumor and at follow-up approximately 2 years later.