Table 1 Average inner thoracic distances and thoracic indices along with relative mean standard deviation between 2 readers and mean standard deviation (std) among readers and algorithm in case of appropriate user selection of main slice for indices computation
Reader 1 | Reader 2 | Algorithm | Std between 2 readers | Std among readers and algorithm | |
|---|---|---|---|---|---|
Thoracic distances (cm) | |||||
Transverse diameter | 24.1 ± 2.6 | 24.2 ± 2.6 | 24.4 ± 2.9 | 0.17 | 0.30 |
Min APd | 4.9 ± 1.3 | 5.0 ± 1.4 | 5.1 ± 1.4 | 0.18 | 0.30 |
Max APd | 7.2 ± 0.94 | 7.6 ± 0.93 | 7.5 ± 0.95 | 0.31 | 0.34 |
Right hemithorax APd | 12.4 ± 1.2 | 12.6 ± 1.3 | 12.2 ± 1.2 | 0.24 | 0.37 |
Left hemithorax APd | 12.3 ± 1.2 | 12.6 ± 1.1 | 11.9 ± 1.2 | 0.30 | 0.47 |
Thoracic indices | |||||
Haller index | 5.3 ± 1.9 | 5.3 ± 1.9 | 5.1 ± 1.6 | 0.31 | 0.34 |
Correction index (%) | 32.5 ± 13.9 | 35.2 ± 14.1 | 32.6 ± 13.6 | 2.7 | 3.6 |
Asymmetry index (%) | 101.7 ± 6.7 | 99.8 ± 5.2 | 102.8 ± 8.2 | 2.2 | 3.2 |
Flatness index | 1.9 ± 0.19 | 1.9 ± 0.17 | 2.0 ± 0.20 | 0.038 | 0.057 |