Reproducibility Results for All Image-Derived Parameters, Including SUVs and Textural Features (Calculated Using Downsampling Range of 64 Values)
Texture | Feature | Mean ± SD | 95% CI | LRL | 95% CI for LRL | URL | 95% CI for URL |
Global | Minimum SUV | 6.3 ± 26.5 | −7.8 to 20.4 | −45.6 | −70.2 to −20.9 | 58.2 | 33.6 to 82.8 |
SUVmax | 4.7 ± 19.5 | −5.7 to 15.0 | −33.5 | −51.7 to −15.4 | 42.9 | 24.7 to 61.0 | |
SUVmean | 5.5 ± 21.2 | −5.8 to 16.8 | −36.1 | −55.8 to 16.4 | 47.1 | 27.3 to 66.8 | |
SD | 1.2 ± 23.2 | −11.1 to 13.6 | −44.18 | −65.7 to −22.6 | 46.6 | 25.1 to 68.2 | |
Skewness | −0.3 ± 27.5 | −15.0 to 14.3 | −54.2 | −79.8 to −28.6 | 53.6 | 28.0 to 79.2 | |
Kurtosis | 2.1 ± 18.0 | −7.4 to 11.7 | −33.1 | −49.8 to −16.4 | 37.3 | 20.6 to 54.0 | |
Mean/SD | 4.1 ± 24.1 | −8.8 to 16.9 | −43.2 | −65.6 to −20.7 | 51.3 | 28.9 to 73.7 | |
Local | Second angular moment | 10.9 ± 26.4 | −3.2 to 25.0 | −40.9 | −65.5 to −16.3 | 62.7 | 38.1 to 87.3 |
Contrast (inertia) | 5.4 ± 24.0 | −18.1 to 7.4 | −52.3 | −74.6 to −30.0 | 41.6 | 19.3 to 63.9 | |
Entropy | −2.0 ± 5.4 | −4.9 to 0.9 | −12.6 | −17.7 to −7.6 | 8.7 | 3.6 to 13.8 | |
Correlation | −0.6 ± 27.7 | −15.3 to 14.1 | −54.8 | −15.3 to 14.1 | 53.6 | 27.9 to 79.3 | |
Homogeneity | 1.8 ± 11.5 | −4.4 to 7.9 | −20.8 | −31.5 to −10.1 | 24.4 | 13.6 to 35.1 | |
Dissimilarity | −2.1 ± 13.0 | −9.0 to 4.9 | −27.6 | −39.7 to −15.5 | 23.5 | 11.4 to 35.6 | |
Regional | Small-area emphasis | −6.0 ± 54.3 | −35.0 to 22.9 | −112.5 | −163.0 to −62.0 | 100.4 | 49.9 to 150.9 |
Large-area emphasis | 3.6 ± 30.0 | −12.4 to 19.6 | −55.2 | −83.1 to −27.3 | 62.4 | 34.5 to 90.3 | |
Intensity variability | −9.7 ± 24.0 | −22.5 to 3.1 | −56.7 | −79.0 to −34.4 | 37.3 | 15.0 to 59.6 | |
Size–zone variability | 11.2 ± 23.1 | −1.1 to 23.5 | −34.1 | −55.6 to −12.6 | 56.5 | 35.0 to 78.0 | |
Zone percentage | −2.7 ± 16.9 | −11.7 to 6.2 | −35.8 | −51.5 to −20.1 | 30.3 | 14.6 to 46.0 | |
Low-intensity emphasis | −4.0 ± 55.3 | −33.5 to 25.4 | −112.4 | −163.9 to −61.0 | 104.4 | 525.9 to 155.8 | |
High-intensity emphasis | 3.9 ± 20.4 | −7.0 to 14.8 | −36.1 | −55.1 to −17.1 | 44.0 | 24.9 to 63.0 | |
Low-intensity small-area emphasis | −7.0 ± 67.6 | −43.1 to 29.0 | −139.5 | −202.4 to −76.6 | 125.4 | 62.5 to 188.3 | |
High-intensity small-area emphasis | 1.0 ± 31.2 | −15.6 to 17.6 | −60.1 | −89.1 to −31.1 | 62.0 | 33.0 to 91.0 | |
Low-intensity large-area emphasis | 1.8 ± 28.9 | −13.6 to 17.2 | −54.9 | −81.8 to 28.0 | 58.5 | 31.6 to 85.4 | |
High-intensity large-area emphasis | 3.5 ± 35.8 | −15.6 to 22.6 | −66.7 | −100.1 to −33.4 | 73.7 | 40.4 to 107.1 |
LRL and URL = lower and upper reproducibility limits, respectively.