Table 1

Percentage of dopamine transporter occupancy determined with PET following i.v. cocaine administration

Subject	Cocaine Dose
Subject	0.1 mg/kg	1.0 mg/kg
RMk-3	53.0	92.1
RLm-1	55.8	95.5
RL1–4	44.2	84.0
RLk-4	52.7	83.6
RSu-3	59.1	88.0
Avg. ± S.D.	53 ±5	87 ± 5