18F-mFBG Cardiac Uptake With Lewy Body Dementia

Inclusion Criteria: * 1\. ≥18 years of age at study entry. 2. Able and willing to comply with study procedures and signed and dated informed consent is obtained. 3\. A male or a female who is either surgically sterile (has had a documented bilateral oophorectomy and/or hysterectomy), postmenopausal (cessation of menses for more than 1 year), non-lactating, or of childbearing potential for whom the result of a serum pregnancy test performed at screening is negative. 4\. All subjects: Judged clinically stable for at least 30 days before enrolment into the study and remains stable to the time of the study imaging procedure. For Lewy body disease subjects (Study Cohort I): 5\. The subject has a diagnosis of either PD or DLB based on accepted clinical criteria at least 6 months before enrollment into the study. For non-Lewy body disease subjects (Study Cohort II): 6\. The subject has a diagnosis of neurological or neurodegenerative disease for which neither PD nor DLB is judged likely by a neurologist based on accepted clinical and imaging criteria. Exclusion Criteria: * 1\. Previously entered into this study or has participated in any other investigational product or medical device study within 30 days of enrollment. 2\. History or suspicion of significant allergic reaction or anaphylaxis to any components of the 18F-mFBG imaging agent. 3\. Presents with any other clinically active, serious, life-threatening disease with a life expectancy of less than 1 year or…