Subject and Scan Characteristics by rs6871 Genotype
| Characteristic | C/C | T/C | T/T |
| n | 19 | 12 | 1 |
| Mean age (y) | 70.9 ± 7.32 | 73.9 ± 8.84 | 64 |
| Sex | 6 men | 3 men | Male |
| Race | 1 African-American; 18 Caucasian | 3 African-American; 9 Caucasian | All Caucasian |
| Diagnosis | 5 CON, 7 CC, 2 MCI, 5 AD | 3 CON, 2 CC, 5 MCI, 2 AD | CON |
| Mean activity injected (MBq) | 524 ± 74.7 | 497 ± 93.1 | 506 |
| Mean mass dose (nmol/kg) | 0.23 ± 0.14 | 0.23 ± 0.15 | 0.11 |
AD = Alzheimer disease; CC = cognitive complaint; CON = control; MCI = mild cognitive impairment.