6.
人工读片筛查肺癌结节（5 mm层厚）
Lung cancer nodules were screened by artificial reading (5 mm)
| Artificial reading piece | Lung nodules （n=250） |
No nodules （n=250） |
Total |
| Positive (detection) | 227 | 7 | 234 |
| Negative (not detected) | 23 | 243 | 266 |
| Total | 250 | 250 | 500 |
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