Investigating the Microstructural and Functional Alterations of Brain in Parkinson's Disease Patients

"During this study, participants will receive a single i.v. administration of approximately 370MBq (10 mCi) 18F- DTBZ immediately prior to imaging. The dosage of DTBZ is 10 nmole. The effective dose in human body is about 5.6 mSV.~The proposed dose for this study is based on the investigators' phase I study. At the proposed human dose of 10 mCi, the whole body effective dose (ED) will be approximately 680 mrem. The estimated human ED is expected to be comparable to or below the range of other approved brain imaging agents, such as 18F-FDG (Lin 2010)."