For example, a study suggested increased accuracy in differentiating PD from atypical PS using a multidimensional combination of striatal presynaptic DAT imaging, postsynaptic D2 receptor imaging, and myocardial scintigraphy [evaluates cardiac postganglionic sympathetic fiber function, which is significantly impaired in early PD and LBSD, as reviewed in (10)] (246). Here, SLC6A3 is linked to Parkinson disease.