Table 2.
Consistency across readers for spectral CT parameters measurement.
| Parameters | ICC | 95%CI |
|---|---|---|
| A-IC | 0.980 | 0.969-0.988 |
| A-Zeff | 0.957 | 0.933-0.974 |
| A-λHU | 0.972 | 0.956-0.983 |
| V-IC | 0.981 | 0.969-0.988 |
| V-Zeff | 0.943 | 0.912-0.965 |
| V-λHU | 0.965 | 0.946-0.979 |
| D-IC | 0.971 | 0.955-0.982 |
| D-Zeff | 0.990 | 0.984-0.994 |
| D-λHU | 0.972 | 0.956-0.983 |
ICC, Intraclass correlation coefficient; IC, Iodine concentration; Zeff, Effective atomic number; λHU, The slope of the spectral curve; A, Arterial phase; V, Venous phase; D, Delayed phase; 95%CI, 95% Confidence interval.