Table 2.
Inter-rater reliability and agreement of the derived vessel wall parameters.
| ICCa (95% CI) | Mean difference (95% LoA) | |||
|---|---|---|---|---|
| Histology | Total vessel area (mm2) | 1.000 (1.000–1.000) | 0.02 (− 0.01 to 0.06) | |
| Lumen area (mm2) | 1.000 (0.999–1.000) | 0.01 (− 0.09 to 0.11) | ||
| Wall area (mm2) | 1.000 (0.999–1.000) | 0.06 (− 0.06 to 0.17) | ||
| Vessel wall thickness (mm) | ||||
| mean | 0.999 (0.996–1.000) | 0.01 (− 0.01 to 0.04) | ||
| minimum | 0.996 (0.984–0.999) | 0.01 (− 0.01 to 0.03) | ||
| maximum | 0.996 (0.982–0.999) | 0.06 (− 0.06 to 0.18) | ||
| Normalized wall index | 1.000 (0.999–1.000) | 0.01 (− 0.01 to 0.02) | ||
| MRI | Total vessel area (mm2) | 0.993 (0.861–0.999) | − 0.46 (− 1.17 to 0.24) | |
| Lumen area (mm2) | 0.999 (0.992–1.000) | − 0.10 (− 0.32 to 0.12) | ||
| Wall area (mm2) | 0.985 (0.814–0.997) | − 0.36 (− 1.01 to 0.29) | ||
| Vessel wall thickness (mm) | ||||
| mean | 0.989 (0.929–0.998) | − 0.03 (− 0.11 to 0.04) | ||
| minimum | 0.849 (0.434–0.962) | − 0.02 (− 0.09 to 0.06) | ||
| maximum | 0.992 (0.970–0.998) | − 0.04 (− 0.20 to 0.13) | ||
| Normalized wall index | 0.995 (0.964–0.999) | − 0.02 (− 0.05 to 0.02) | ||
CI: confidence interval; ICC: intraclass correlation coefficient; LoA: limits of agreement.
a
Two-way mixed model with absolute agreement.