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Table 1 Patients’ demographics and CT scanner manufacturer and acquisition parameters plus overscanning ranges selected by the technologist in both directions in the whole dataset categorized by centers

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

Database Gender DAP (cm) DLat (cm) Scanner Manufacturer Tube current (mA) CTDIvol (mGy) SSDE (mGy) DLP (mGy.cm) Overscanning (mm)
Superior Inferior
Male Female Mean ± STD Mean ± STD Mean ± STD Mean ± STD Mean ± STD Mean ± STD Mean ± STD Mean ± STD
C1 260 223 23.3 ± 2.3 31.1 ± 3.6 GE 186.2 ± 34.0 8.47 ± 0.53 11.69 ± 0.85 97 ± 24 19.6 ± 10.9 42.3 ± 29.9
C2 759 564 24.1 ± 2.7 32.0 ± 3.7 GE 228.4 ± 27.2 6.82 ± 1.02 9.04 ± 0.98 19 ± 15 2.27 ± 1.71 1.89 ± 2.39
C3 435 303 23.7 ± 2.7 31.2 ± 3.6 Siemens 123.6 ± 9.6 3.40 ± 0.42 4.65 ± 0.6 33 ± 11 25.0 ± 19.0 54.0 ± 37.2
C4 978 929 23.2 ± 3.0 31.7 ± 4.0 Siemens 147.1 ± 43.2 6.13 ± 2.07 8.21 ± 2.14 103 ± 36 28.0 ± 11.5 33.7 ± 21.3
C5 196 171 22.7 ± 3.1 31.4 ± 4.1 Siemens 151.1 ± 47.8 6.22 ± 2.17 8.48 ± 2.52 106 ± 39 29.2 ± 12.3 37.8 ± 22.6
C6 465 412 24.2 ± 3.0 33.1 ± 3.7 Siemens 166.2 ± 51.3 4.30 ± 1.54 5.49 ± 1.50 79 ± 29 30.0 ± 11.4 39.6 ± 22.1
C7 869 779 22.7 ± 2.8 30.4 ± 3.9 NMS 220.7 ± 27.9 8.92 ± 1.40 12.61 ± 1.89 199 ± 33 30.9 ± 12.2 35.3 ± 26.1
C8 518 530 23.0 ± 3.8 31.5 ± 5.0 Phillips 89.3 ± 48.2 3.73 ± 2.09 5.05 ± 2.62 59 ± 34 23.5 ± 13.2 24.8 ± 21.7
C9 1489 1300 23.3 ± 2.9 31.2 ± 3.8 Siemens 174.0 ± 37.5 5.91 ± 1.52 7.99 ± 1.49 149 ± 42 25.7 ± 12.3 37.3 ± 21.9
C10 594 372 23.2 ± 3.2 31.0 ± 4.6 Siemens 210.7 ± 39.6 5.57 ± 1.21 7.69 ± 1.65 47 ± 27 24.0 ± 17.9 37.9 ± 39.1
D1 NA NA 20.4 ± 3.1 26.7 ± 5.4 NA NA NA NA NA 32.6 ± 10.9 26.0 ± 17.2
D2 NA NA 23.3 ± 3.3 29.7 ± 4.8 NA NA NA NA NA 34.7 ± 13.3 34.8 ± 22.4
D3 NA NA 23.0 ± 3.2 30.6 ± 4.2 NA 424.0 ± 191.8 NA NA NA 22.1 ± 12.4 40.6 ± 35.6