caudate nucleus?

[kaypeeoh]

"In conclusion, PD and ET do not share a common pattern of dopaminergic loss over time. However, mild impairment of dopamine transporter in the caudate nucleus may contribute to tremor onset in ET."

I've harped on this before. But I'm still not clear on PD diagnosis. Could this "mild impairment" of dopamine transporter in the caudate nucleus show up as a sign of PD when it's actually ET?

TIA

kpo