Table 2.
Results from Statistical Analysis of Hemodynamic and Morphological Parameters Examined in Mirror Aneurysms Prior to Rupture
| Parameters | Pr-ruptured ANs | Unruptured ANs | P-values |
|---|---|---|---|
| Aneurysm shape | |||
| Regular | 2(16.7%) | 9(75%) | |
| Irregular | 10(23.3%) | 3(25%) | 0.012 |
| Size | 8.25±2.95 | 4.52±0.62 | <0.001 |
| AR | 1.42±0.51 | 1.05±0.49 | 0.042 |
| SR | 2.60±0.81 | 1.81±0.42 | 0.003 |
| EI | 0.21±0.39 | 0.13±0.01 | 0.02 |
| UI | 0.19±0.08 | 0.048±0.025 | <0.001 |
| NSI | 0.20±0.35 | 0.18±0.52 | 0.091 |
| NWSS | 0.54±0.21 | 0.75±0.19 | <0.001 |
| LSA(%) | 0.16(0.12,0.25) | 0.02(0.003,0.063) | 0.002 |
| OSI | 0.026±0.009 | 0.023±0.010 | 0.136 |
Abbreviations: Pr-ruptured ANs, the aneurysms prior to rupture of mirror aneurysms; Unruptured ANs, unruptured aneurysms of the mirror aneurysms prior to rupture; AR, aspect ratio; SR, size ratio; EI, ellipticity index; UI, undulation index; NSI, non-sphericity index; NWSS, normalized WSS, the WSS-aneurysm wall divided by the WSS-parent artery; LSA%, percentage of low WSS area; OSI, oscillatory shear index.