Table 2.
Neuroimaging
| MCI subtype | ||||||
|---|---|---|---|---|---|---|
| HC (n = 15) | AD (n = 15) | All MCI (n = 45) | naMCI (n = 4) | asMCI (n = 12) | amMCI (n = 29) | |
| Neocortical SUVR | 1.26 ± 0.22 | 1.96 ± 0.27 | 1.54 ± 0.27AB | 1.50 ± 0.35B | 1.66 ± 0.20AB | 1.49 ± 0.28B |
| High β-amyloid, n (%) | 3 (20) | 15 (100) | 24 (53)B | 1 (25)B | 10 (83)AC | 13 (45)B |
| Hippocampal volume (cm3) | 7.1 ± 0.9 | 7.1 ± 0.8 | 7.0 ± 0.8 | 7.2 ± 1.0 | ||
| WMH volume (cm3) | 10.2 ± 11.0 | 13.3 ± 15.5 | 4.8 ± 6.6C | 12.0 ± 11.4 | ||
AD, Alzheimer's disease; amMCI, amnestic multidomain mild cognitive impairment; asMCI, amnestic single-domain mild cognitive impairment; HC, healthy older controls; MCI, mild cognitive impairment; naMCI, nonamnestic mild cognitive impairment; SUVR, standard uptake value ratio; WMH, white matter hyperintensities. AP < 0.05, MCI subtype compared with HC. BP < 0.05, MCI subtype compared with AD. CP < 0.05, asMCI compared with amMCI.