I had DaTScan as part of my participation in the Michael J Fox Foundation PPMI study (sign up http://www.michaeljfox.org/living_PPMI_findsite.cfm ) My result came back "low" so I assume this confirms...
I also have PIGD with no tremor. And my dad has "classic" Parkinson's with tremor. I have balance issues and loss of fine motor on left side - not taking meds yet. here's an interesting youtube on...