Overview Effects of Antidepressant Therapy on Brain Dopamine Transporter Activity in People With Major Depression Status: Completed Trial end date: 2009-12-01 Target enrollment: Participant gender: Summary This study will examine changes in brain dopamine transporter activity before and after antidepressant therapy. Phase: Phase 2/Phase 3 Details Lead Sponsor: University of PennsylvaniaCollaborator: National Institute of Mental Health (NIMH)Treatments: Antidepressive AgentsCitalopramDexetimideDopamineDopamine Agents