Results of Kruskal-Wallis H test and ordinal multivariate analysis to identify the aneurysmal wall enhancement patterns
| Variables | Kruskal-Wallis H test | Multivariate analysis | ||||
| Grade 0 | Grade 1 | Grade 2 | Grade 3 | P value | P value | |
| Vmax-IA (cm/s) | 61.80±12.49 | 67.72±23.91 | 50.51±26.66 | 51.83±26.20 | 0.250 | |
| Flowmax-IA (ml/s) | 7.57±3.89 | 7.25±2.99 | 8.93±5.89 | 8.14±6.29 | 0.953 | |
| WSSavg-IA (N/m2) | 0.62±0.22 | 0.59±0.18 | 0.37±0.15 | 0.19±0.14 | <0.001* | 0.002* |
| Vmax-APA (cm/s) | 79.50±13.91 | 63.18±18.23 | 54.78±22.29 | 59.30±21.49 | 0.019* | 0.316 |
| Flowavg-APA (ml/s) | 5.56±1.85 | 5.10±1.47 | 4.20±2.38 | 4.00±1.60 | 0.100 | 0.420 |
| Flowmax-APA (ml/s) | 8.46±2.72 | 7.56±1.99 | 6.36±3.34 | 5.95±2.32 | 0.072 | 0.242 |
| Inflow jet pattern | 0.011* | 0.591 | ||||
| Concentrated | 1 (8.3%) | 1 (11.1%) | 8 (53.3%) | 8 (61.5%) | ||
| Diffuse | 11 (91.7%) | 8 (88.9%) | 5 (33.3%) | 3 (23.1%) | ||
| Unvisualised | 0 (0.0%) | 0 (0.0%) | 2 (13.4%) | 2 (15.4%) | ||
| Vorticityavg-IA (s-1) | 0.23±0.05 | 0.21±0.05 | 0.14±0.03 | 0.13±0.03 | <0.001* | 0.033* |
| Vorticitymax-IA (s-1) | 0.57±0.16 | 0.58±0.16 | 0.44±0.21 | 0.47±0.17 | 0.157 | 0.074 |
*P< 0.05.
APA, adjacent parent artery; IV, intracranial aneurysm; V, velocity; WSS, wall shear stress.