A single center retrospective chart review at University of Nebraska Medical Center (UNMC) Movement Disorders Clinic including five Movement Disorders Specialists (MDS) from 2013-2019.

Our 190 patients had a slight male predominance (n=115, 60.5%) and average age of 67.6 years (range 33-94). Mean Unified Parkinson Disease Rating Scale (UPDRS) Motor Score was 28.76 (range 3-75, median 28). Most patients had resting tremor (n=105, 55.26%). Mean duration of symptoms before DaTscan was 6.28 years (range 0-43, median 4).

The most common reasons for DaTscan was drug-induced parkinsonism (n=38, 20%). Others included nonspecific parkinsonism (n=37,19.47%), vascular parkinsonism (n=13,6.8%), essential tremor (n=19,10%) and dystonia(n=19,10%).

About half of the patients with DaTscans showed a positive scan (n=99, 52.1%) indicative of neurodegenerative Parkinsonism syndrome. Only one patient had an equivocal result and all others were normal. DaTscan led to treatment change in most patients (n=118, 62.1%).