Table 1.
Datasets and label distribution for classification.
| View | Total | External test |
Training and validation |
||||||
|---|---|---|---|---|---|---|---|---|---|
| CNUH | YNU | KNUH | AMC | NIH | Brixia | BIMCV | CheXpert | ||
| All views | |||||||||
| Normal | 26,846 | 417 | 300 | 400 | 8978 | 7158 | - | 93 | 9500 |
| Other infection | 1672 | 58 | 220 | 400 | 994 | - | - | - | - |
| COVID-19 | 5755 | 81 | 286 | 293 | - | - | 4313 | 782 | - |
| Total images | 34,273 | 556 | 806 | 1093 | 9972 | 7158 | 4313 | 875 | 9500 |
| PA view | |||||||||
| Normal | 13,649 | 320 | 300 | 400 | 8861 | 3768 | - | - | - |
| Other infection | 1468 | 39 | 144 | 308 | 977 | - | - | - | - |
| COVID-19 | 2431 | 6 | 8 | 80 | - | - | 1929 | 408 | - |
| Total images | 17,548 | 365 | 452 | 788 | 9838 | 3768 | 1929 | 408 | - |
| AP view | |||||||||
| Normal | 13,197 | 97 | - | - | 117 | 3390 | - | 93 | 9500 |
| Other infection | 204 | 19 | 76 | 92 | 17 | - | - | - | - |
| COVID-19 | 3324 | 75 | 278 | 213 | - | - | 2384 | 374 | - |
| Total images | 16,725 | 191 | 354 | 305 | 134 | 3390 | 2384 | 467 | 9500 |