Specific in vivo binding of /sup 77/Br-brombenperidol in rat brain

The in vivo binding of the radiobrominated neuroleptic brombenperidol in rat brain was studied. The accumulation of the radiolabeled neuroleptic was high in the striatum and relatively low in the cerebellum, cortex, and blood. Striatal binding of brombenperidol was saturable and displaced by subsequent administration of benperidol. The rationale for the development of /sup 75/Br-brombenperidol as a radiopharmaceutical for the non-invasive imaging of cerebral dopamine receptor areas is presented.