Geometric parameters of ruptured and unruptured aneurysms (x̄ ± s)
| Geometric Parameters | Unruptured (n = 63) | Ruptured (n = 63) | P Value |
|---|---|---|---|
| Neck size (mm) | 3.1 ± 1.3 | 3.2 ± 1.2 | .783 |
| Aneurysm size (mm) | 4.3 ± 2.2 | 5.3 ± 2.0 | .009 |
| Vessel diameter (mm) | 2.5 ± 0.6 | 2.4 ± 0.6 | .687 |
| θF | 121.4° ± 32.7° | 130.8° ± 33.6° | .104 |
| θP | 107.6° ± 26.6° | 100.9° ± 27.1° | .159 |
| AR | 1.3 ± 0.5 | 1.7 ± 0.6 | <.001 |
| SR | 1.7 ± 1.2 | 2.1 ± 0.9 | .029 |
| NPR | 1.4 ± 0.7 | 1.4 ± 0.6 | .805 |
| Area ratio | 2.0 ± 2.0 | 2.9 ± 1.9 | .011 |
Note:—θF indicates flow angle; θP, parent-daughter angle; NPR, neck-to-parent artery ratio.