Table 4.
Interobserver variability of segmental WSS analysis of the peak systolic cardiac phase from the scan exams
| WSSmax (mPa) | WSSmean (mPa) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bland–Altman | COV (%) | Correlation* | ICC | Bland-Altman | COV (%) | Correlation* | ICC | |||||
| Mean difference (mPa) | Limits of agreement (± 2σ) (mPa) | r | P | Mean difference (mPa) | Limits of agreement (± 2σ) (mPa) | r | P | |||||
| Proximal AAo | − 182.4 | 924.7 | 17 | 0.81 | 0.005 | 0.89 | − 59.8 | 197.1 | 8 | 0.82 | 0.004 | 0.94 |
| Distal AAo | − 27.3 | 466.3 | 11 | 0.81 | 0.005 | 0.85 | 11.2 | 35.5 | 2 | 0.96 | < 0.001 | 1.00 |
| Aortic arch | 58.8 | 234.7 | 6 | 0.94 | < 0.001 | 0.93 | 26.3 | 40.3 | 2 | 0.99 | < 0.001 | 0.99 |
| Proximal DAo | − 44.6 | 229.7 | 5 | 0.98 | < 0.001 | 0.97 | 1.6 | 103.7 | 4 | 0.96 | < 0.001 | 0.96 |
| Distal DAo | − 155.0 | 418.1 | 8 | 0.93 | < 0.001 | 0.90 | − 22.7 | 94.1 | 3 | 0.96 | < 0.001 | 0.97 |
AAo ascending aorta, DAo descending aorta, COV coefficient of variation, ICC intraclass correlation coefficient
*Spearman correlation coefficient