Table 3.

Mean (± SEM) ratios of ¹⁸F/¹¹C after 3‐minute infusions of ¹⁸F‐dopamine and ¹¹C‐methylreboxetine in control subjects and patients with pure autonomic failure (PAF)

Time min	Control 18F/11C	PAF 18F/11C	P
0	2.77 ± 0.26	1.06 ± 0.13	0.00065
1	2.13 ± 0.13	0.56 ± 0.07	<0.0001
2	1.74 ± 0.15	0.61 ± 0.07	0.00015
5	2.00 ± 0.13	0.51 ± 0.03	<0.0001
10	1.88 ± 0.13	0.51 ± 0.03	<0.0001
15	1.82 ± 0.12	0.47 ± 0.04	<0.0001
22	1.84 ± 0.14	0.46 ± 0.02	<0.0001