Table 1 Sensitivity and positive predictive value for automatic detection of punctate white matter lesions by the threshold of detection probability for each training set of composite images.
Training sets for threshold of detection probability | Sensitivity | Positive predictive value |
|---|---|---|
600 images | ||
20% | 0.926 | 0.367 |
30% | 0.908 | 0.559 |
40% | 0.817 | 0.720 |
50% | 0.390 | 0.928 |
1200 images | ||
20% | 0.951 | 0.552 |
30% | 0.945 | 0.550 |
40% | 0.851 | 0.711 |
50% | 0.623 | 0.815 |
2400 images | ||
20% | 0.957 | 0.484 |
30% | 0.945 | 0.684 |
40% | 0.865 | 0.844 |
50% | 0.589 | 0.980 |
3600 images | ||
20% | 0.939 | 0.519 |
30% | 0.926 | 0.659 |
40% | 0.853 | 0.739 |
50% | 0.638 | 0.904 |
