Table 2. Cerebellum and brainstem volume (ml) calculated after FreeSurfer automated process, manual correction and corrective learning in the test set using training set of 2 and 5 scans.
| FreeSurfer | Manual Correction | Training Set of 2 Scans | Training Set of 5 Scans | |
|---|---|---|---|---|
| Cerebellum | ||||
| Younger controls, 8 channel | 140 ± 13* | 132 ± 12 | 133 ± 12 | 133 ± 12 |
| Younger controls, 32 channel | 150 ± 17* | 144 ± 16 | 145 ± 17 | 145 ± 17 |
| Older controls, 32 channel | 130 ± 12* | 124 ± 10 | 125 ± 10 | 125 ± 10 |
| Older patients, 32 channel | 115 ± 16* | 110 ± 15 | 112 ± 15 | 111 ± 15 |
| Brainstem | ||||
| Younger controls, 8 channel | 22.8 ± 2.0* | 31.1 ± 2.6 | 30.1 ± 2.3* | 30.2 ± 2.3* |
| Younger controls, 32 channel | 26.1 ± 4.0* | 34.5 ± 5.3 | 33.2 ± 4.4* | 33.2 ± 4.4* |
| Older controls, 32 channel | 23.5 ± 1.9* | 31.7 ± 2.4 | 30.6 ± 2.2* | 30.8 ± 2.3* |
| Older patients, 32 channel | 20.7 ± 2.6* | 27.2 ± 3.6 | 26.4 ± 3.2* | 26.4 ± 3.2* |
*, significant at FDR 5% compared with manual correction, p ≤ 0.010.