Table 2.

Regional 123I-FP-CIT uptake values for the PD and Control groups

	PD (n = 154)	Controls (n = 62)	pval
Caudate nucleus	2.66 ± 0.95	3.60 ± 1.03	<  0.0001
Putamen	1.34 ± 0.46	2.54 ± 0.44	< 0.0001
Pallidum	1.51 ± 0.80	2.56 ± 0.56	< 0.0001
Insula	0.43 ± 0.16	0.64 ± 0.19	< 0.0001
Amygdala	0.52 ± 0.21	0.59 ± 0.19	0.01

Average (mean of left and right) ¹²³I-FP-CIT uptake values for PD and Control groups for striatal and extrastriatal regions-of-interest. For comparative purposes, the same reference region (occipital lobe) was used for the present results. All group comparisons are performed using Mann-Whitney U test