Faculty

Derek R. Johnson, M.D.

Clinical Studies

18Fluoro-O-(2) Fluoroethyl-L-tyrosine (FET) PET For Localization Of Pituitary Adenomas In Patients With Cushing Disease Rochester, Minn.
The purpose of this study is to evaluate the performance [sensitivity, specificity, accuracy] of 18Fluoro-O-(2) fluoroethyl-L-tyrosine (FET) PET/CT imaging to detect ACTH-secreting pituitary adenoma, using operative findings and histopathology as truth standard.

A CENTRALIZED PROTOCOL EVALUATING THE SAFETY AND CLINICAL IMPACT OF AMINO ACID PET FOR BRAIN TUMORS Rochester, Minn.
The purpose of this study is to utilize amino acid PET such as 18F-DOPA PET/CT for use in brain tumor patients.
An Open-label Multicenter Phase 2 Dose-evaluation Study of Altropane (123I) Injection for Striatal Dopamine Transporter Visualization Using SPECT Brain Imaging Rochester, Minn.
The purpose of this study is to determine whether a 5-mCi dose of Altropane is acceptable for visualizing the right and left striata.