Table 1.
Distribution of detected lesions by the DL‐CAD system and double reading based on lesion types
| Lesion characteristics | Double reading | DL‐CAD system | Gold standard (expert panel + DL‐CAD system) |
|---|---|---|---|
| Total number of lesions | 687 | 1229 | 812 |
| Benign lesions | |||
| Pleural plaque & thickening | 1 | 125 | — |
| Parenchymal plaque | 0 | 9 | — |
| Fissure thickening | 1 | 21 | — |
| Fibrosis | 1 | 32 | — |
| Bronchiectasis | 0 | 2 | — |
| Non‐lesions (normal anatomy) | |||
| Pulmonary vasculature | 36 | 247 | — |
| Hilum | 0 | 39 | — |
| Rib cartilage | 0 | 9 | — |
| Azygous vein | 0 | 8 | — |
| Superior vena cava | 0 | 1 | — |
| Fat pad of pericardium | 0 | 2 | — |
| Thoracic bone hyperplasia | 0 | 3 | — |
| Wall of bronchus | 0 | 2 | — |
| Diaphragm | 0 | 2 | — |
| Left subclavian artery | 0 | 1 | — |
| Mediastinal lymph nodes | 0 | 1 | — |
| Artifacts | 5 | 25 | — |
| True nodules | |||
| ≥ 5 mm | 125 | 137 | 142 |
| < 5 mm | 518 | 563 | 668 |
DL‐CAD, deep learning‐based computer‐aided diagnosis.