RecruitingDrug trialFluoroethyltyrosine for the Evaluation of Intracranial NeoplasmThis is a single center study investigating the use of Fluoroethyltyrosine (FET) in the detection of brain tumors. FET accumulates in malignant cells within intracranial neoplasms and can be used to detect recurrent disease and characterize grade of glial neoplasms.