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Table 3 The error and difference between the lung segment and the scan range selected by the technologist (Human) and DL network

From: Deep learning-based fully automated Z-axis coverage range definition from scout scans to eliminate overscanning in chest CT imaging

Center Superior error (mm) Inferior error (mm)
Human Deep AP Deep Lateral Deep Both Human Deep AP Deep Lateral Beep Both
C1 16.9 ± 7.9  − 0.3 ± 1.7 0.7 ± 2.2  − 0.1 ± 1.0 41.7 ± 35.5 2.3 ± 9.5  − 2.46 ± 9.9  − 1.5 ± 5.5
C2 6.3 ± 2.2  − 0.1 ± 0.5  − 0.1 ± 0.6  − 0.1 ± 0.3 5.3 ± 4.5 0.4 ± 1.6  − 0.54 ± 0.8  − 0.1 ± 0.6
C3 33.3 ± 19.7  − 0.3 ± 3.4  − 0.6 ± 3.8 0.1 ± 1.9 55.2 ± 32.7 0.0 ± 10.7  − 7.36 ± 10.2  − 2.4 ± 6.8
C4 29.2 ± 11.6 0.0 ± 2.2  − 0.2 ± 2.6  − 0.1 ± 1.5 34.2 ± 22.3 1.0 ± 8.5  − 3.06 ± 6.8  − 1.5 ± 4.8
C5 26.2 ± 12.6 0.4 ± 2.2 1.0 ± 3.0 0.3 ± 1.8 43.7 ± 22.6 3.8 ± 9.3  − 1.96 ± 7.0  − 0.2 ± 4.3
C6 33.1 ± 12.9  − 0.3 ± 2.6  − 0.8 ± 2.9  − 0.5 ± 1.7 41.3 ± 21.1 2.3 ± 10.7  − 3.06 ± 5.5  − 1.3 ± 3.9
C7 29.6 ± 10.3  − 0.1 ± 2.7 0.4 ± 2.9 0.1 ± 1.9 34.8 ± 23.6 0.3 ± 7.5  − 2.66 ± 5.4  − 1.8 ± 4.1
C8 21.7 ± 10.2 0.1 ± 2.5 0.5 ± 2.8 0.1 ± 1.7 22.1 ± 16.0 0.9 ± 5.7  − 3.76 ± 7.1  − 1.3 ± 3.0
C9 26.0 ± 9.2  − 0.4 ± 3.1  − 0.7 ± 3.7  − 0.3 ± 2.2 38.1 ± 21.0 3.8 ± 11.1  − 3.36 ± 6.9  − 0.9 ± 4.1
C10 23.7 ± 12.3  − 0.2 ± 1.7  − 0.3 ± 1.6  − 0.1 ± 0.9 39.7 ± 28.0 0.9 ± 7.4  − 2.06 ± 5.9  − 1.4 ± 2.9
D1 29.7 ± 13.4 0.3 ± 1.8 0.5 ± 2.1 0.2 ± 1.3 26.0 ± 19.8 0.3 ± 7.1  − 3.36 ± 5.9  − 1.1 ± 3.9
D2 36.1 ± 12.8  − 0.3 ± 2.5 0.2 ± 3.9  − 0.2 ± 1.5 40.8 ± 24.8 0.3 ± 7.4  − 3.26 ± 6.1  − 1.3 ± 3.8
D3 21.9 ± 10.4  − 0.2 ± 1.6 0.7 ± 2.5 0.0 ± 1.0 39.3 ± 38.2  − 1.2 ± 08  − 2.96 ± 11.3  − 2.0 ± 4.4
C9-Scout view 26.0 ± 9.2  − 0.7 ± 4.08    38.1 ± 21.0 0.01 ± 14.97   
C8-Scout view 21.7 ± 10.2  − 1.0 ± 3.20    38.1 ± 21.0 0.0 ± 9.40   
C4-Scout view 29.2 ± 11.6 0.3 ± 5.80    34.2 ± 22.3 0.1 ± 10.60   
  1. The bolded cells reflect the results of delimitation by means of AP projections for the same centers where AP scout-views
  2. The negative values indicate missing the lung, whereas the positive values indicate overscanning. The last row is for the results of fine-tuning the network on AP scout-view images for center C9