Table 2 Comparison of means of dCT and single-slice variables
Variable | r 2 | Mean difference | Lower 95% limit of agreement | Upper 95% limit of agreement |
|---|---|---|---|---|
CT density (HU) | 0.93 | − 31.2 [− 35.7 to − 26.6] | − 93.8 [− 101.6 to − 86.0] | 31.5 [23.7 to 39.3] |
FV-soft tissue (%) | 0.78 | − 1.2 [− 1.6 to − 0.7] | − 7.2 [− 7.9 to − 6.4] | 4.8 [4.1 to 5.6] |
FV-gas (%) | 0.92 | 4.2 [3.8 to 4.6] | − 1.5 [− 2.2 to − 0.8] | 10.0 [9.2 to 10.7] |
FV-iodinated blood (%) | 0.75 | − 3.1 [− 3.5 to − 2.6] | − 8.7 [− 9.4 to − 8.0] | 2.6 [1.9 to 3.3] |
FV-atelectasis (%) | 0.83 | − 2.8 [− 3.2 to − 2.3] | − 9.0 [− 9.7 to − 8.2] | 3.4 [2.7 to 4.2] |
FV-poorly aerated (%) | 0.94 | − 4.4 [− 4.9 to − 3.8] | − 11.8 [− 12.7 to − 10.9] | 3.1 [2.1 to 4.0] |
FV-normally aerated (%) | 0.92 | 7.7 [6.9 to 8.5] | − 2.8 [− 4.1 to − 1.5] | 18.2 [16.9 to 19.5] |
FV-overdistended (%) | 0.80 | − 0.6 [− 0.6 to − 0.5] | − 1.2 [− 1.2 to − 1.1] | 0.0 [− 0.0 to 0.1] |