An Investigational Scan (18F-DOPA PET/CT) for Improving the Clinical Management of Brain Tumors

PRIMARY OBJECTIVE: I. To determine whether the addition of amino acid PET to standard of care imaging impacts clinical management of brain tumor patients in over 50% of cases. SECONDARY OBJECTIVES: I. To assess the safety and tolerability of amino acid PET for brain tumor patients in response to Food and Drug Administration (FDA) guidance that such data is needed to support a potential New Drug Application (NDA) for fluorodopa F 18 (18F-DOPA). II. To assess the rate of identification of tumor outside of standard magnetic resonance imaging (MRI) imaging. OUTLINE: Patients receive 18F-DOPA intravenously (IV) and undergo PET/CT over 30 minutes on day 1. After completion of study intervention, patients are followed for 3 days.