Fluoroethyltyrosine for Evaluation of Intracranial Neoplasms

Patients given an injected dose of 4 to 7 millicurie (mCi) of FET per scan. The radiopharmaceutical will be administered while the patient is in the PET scanner

All patients receive single PET imaging lasting for 40 minutes. Acquired PET data will be reconstructed so that three time points are created: (1) Perfusion: 60-second acquisition that starts immediately when activity is noted in the field of view, (2) Equilibrium: 10-minute acquisition acquired between 10 and 20 minutes after injection, and (3) Washout: 10-minute acquisition acquired between 30 and 40 minutes after injection. A repeat PET image will be offered to adult patients.