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. 2022 Sep 2;270(1):300–310. doi: 10.1007/s00415-022-11342-1

Fig. 4.

Fig. 4

Scatter plots showing associations between [11C]TMSX distribution volume ratio (DVR) representing adenosine A2A receptor availability in striatal regions of interest and clinical parameters of Parkinson’s disease (PD) patients. a Correlation between mean bilateral striatum DVR of PD early-stage (PDE) patients and their Levodopa equivalent dose (LED). b Correlation between mean bilateral caudate DVR of pooled PD patients (PD early-stage + PD moderate-stage patients) and their LED. c Correlation between mean bilateral putamen DVR of PDE patients and their LED. d Correlation between mean bilateral putamen DVR of PDE patients and their disease duration