Table 4.
Datasets summaries: number of subjects, number of images, descriptive age statistics, image-wise percentage of females (vs. males) and image-wise percentage of 1.5 T field strength (vs. 3.0 T).
| Dataset | Subjs. | Group | Images | Age (years) | Female (%) | 1.5 T(%) | |||
|---|---|---|---|---|---|---|---|---|---|
| Med | Avg ± Std | Min | Max | ||||||
| Dset. 1 | 845 | All | 9,149 | 76.6 | 76.3 ± 6.9 | 54.6 | 93.0 | 42.2 | 82.2 |
| CN | 2,701 | 76.7 | 77.2 ± 5.1 | 60.0 | 92.8 | 50.2 | 80.5 | ||
| MCI | 4,845 | 76.5 | 76.0 ± 7.4 | 54.6 | 90.9 | 35.3 | 83.0 | ||
| AD | 1,603 | 76.5 | 76.1 ± 7.9 | 55.2 | 93.0 | 49.5 | 82.5 | ||
| Dset. 1 Train. | 591 | All | 6,314 | 76.5 | 76.2 ± 6.9 | 54.6 | 93.0 | 43.4 | 82.6 |
| CN | 1,809 | 77.2 | 77.3 ± 4.9 | 60.0 | 90.8 | 49.5 | 81.3 | ||
| MCI | 3,399 | 76.1 | 75.7 ± 7.3 | 54.6 | 90.9 | 36.3 | 83.0 | ||
| AD | 1,106 | 75.9 | 76.1 ± 7.9 | 55.2 | 93.0 | 55.3 | 83.5 | ||
| Dset. 1 Val. | 84 | All | 951 | 76.4 | 75.8 ± 6.8 | 56.2 | 89.2 | 40.5 | 82.8 |
| CN | 301 | 75.7 | 76.5 ± 4.8 | 65.2 | 88.6 | 58.5 | 79.7 | ||
| MCI | 501 | 78.2 | 76.7 ± 6.7 | 56.2 | 89.2 | 28.5 | 83.8 | ||
| AD | 149 | 72.0 | 71.2 ± 8.6 | 56.5 | 85.0 | 44.3 | 85.2 | ||
| Dset. 1 Test | 170 | All | 1,884 | 77.2 | 77.0 ± 6.9 | 56.7 | 92.8 | 38.7 | 80.4 |
| CN | 591 | 76.2 | 77.2 ± 5.6 | 63.3 | 92.8 | 47.9 | 78.5 | ||
| MCI | 945 | 77.7 | 76.5 ± 7.8 | 56.7 | 90.9 | 35.1 | 82.4 | ||
| AD | 348 | 79.7 | 78.0 ± 6.3 | 63.1 | 87.7 | 33.0 | 78.2 | ||
| Dset. 2 | 1503 | All | 15,885 | 75.8 | 75.4 ± 7.3 | 54.6 | 95.8 | 44.0 | 53.3 |
| CN | 4,646 | 76.8 | 76.9 ± 5.8 | 56.3 | 95.8 | 50.0 | 56.5 | ||
| MCI | 8,940 | 75.0 | 74.6 ± 7.7 | 54.6 | 93.5 | 40.0 | 50.5 | ||
| AD | 2,299 | 76.4 | 75.8 ± 7.8 | 55.2 | 93.0 | 47.5 | 57.5 | ||
| Dset. 3 | 1715 | All | 18,303 | 75.8 | 75.5 ± 7.4 | 54.6 | 95.8 | 43.5 | 48.2 |
| CN | 5,361 | 76.7 | 76.9 ± 6.0 | 56.3 | 95.8 | 50.0 | 52.5 | ||
| MCI | 10,306 | 75.0 | 74.6 ± 7.7 | 54.6 | 93.6 | 39.5 | 45.5 | ||
| AD | 2,636 | 76.2 | 75.8 ± 7.9 | 55.2 | 93.0 | 45.9 | 50.2 | ||
| Dset. 4 | 2984 | All | 23,165 | 75.0 | 73.5 ± 11.7 | 18.0 | 98.0 | 46.5 | 55.5 |
| CN | 8,462 | 75.0 | 71.3 ± 16.1 | 18.0 | 97.0 | 53.9 | 62.8 | ||
| MCI | 10,460 | 75.0 | 74.7 ± 7.7 | 54.6 | 96.0 | 39.6 | 45.1 | ||
| AD | 4,243 | 75.4 | 75.3 ± 7.9 | 55.0 | 98.0 | 48.4 | 66.3 | ||
| CADD. Train. | 30 | All | 30 | 65.0 | 65.2 ± 6.9 | 54.0 | 80.0 | 43.3 | 0.0 |
| CN | 12 | 62.0 | 62.3 ± 6.1 | 55.0 | 79.0 | 25.0 | 0.0 | ||
| MCI | 9 | 68.0 | 68.0 ± 8.2 | 54.0 | 80.0 | 44.4 | 0.0 | ||
| AD | 9 | 67.0 | 66.1 ± 5.0 | 57.0 | 75.0 | 66.7 | 0.0 | ||
| CADD. Test | 354 | All | 354 | 65.0 | 65.1 ± 7.8 | 46.0 | 88.0 | 39.8 | 0.0 |
AD, Alzheimer's disease; Avg, average; CADD., CADDementia; CN, cognitively normal; Dset., dataset; Max, maximum; Med, median; MCI, mild cognitive impairment; Min, minimum; Std, standard deviation; Subjs., subjects; Train., training; Val., validation.