Table 2. The Morphological Features of Aneurysms.
| Factors | Patient groups | p value | |
|---|---|---|---|
| Unruptured | Ruptured | ||
| No. of aneurysm | 90 (41.1%) | 129 (58.9%) | |
| Location | |||
| ACoA | 21 (23.3%) | 57 (44.2%) | 0.000 |
| ACA | 1 (1.1%) | 3 (2.3%) | 0.883 |
| MCA | 30 (33.3%) | 23 (17.8%) | 0.008 |
| PComa | 31 (34.4%) | 38 (29.5%) | 0.434 |
| ICA | 6 (6.7%) | 3 (2.3%) | 0.213 |
| PCC | 1 (1.1%) | 5 (3.9%) | 0.416 |
| Irregular shape | 28 (31.1%) | 91 (70.5%) | 0.000 |
| Daughter sac | 18 (20.0%) | 65 (50.4%) | 0.000 |
| Type C | 45 (50%) | 63 (48.8%) | 0.866 |
| DA ratio | 1.70±0.75 | 1.56±0.61 | 0.138 |
| LA ratio | 1.51±0.85 | 1.34±0.60 | 0.104 |
| Depth | 4.64±2.83 | 6.08±2.51 | 0.000 |
| Width | 4.65±2.40 | 5.27±2.53 | 0.068 |
| Neck width | 4.55±1.90 | 4.08±1.51 | 0.044 |
| Maximum diameter | 5.72±2.93 | 7.20±2.76 | 0.000 |
| Aspect ratio | 1.03±0.45 | 1.60±0.70 | 0.000 |
| Depth/width ratio | 1.00±0.31 | 1.24±0.40 | 0.000 |
| Bottleneck factor | 1.02±0.30 | 1.33±0.52 | 0.000 |
ACoA, anterior communicating artery; ACA, anterior cerebral artery; MCA, middle cerebral artery; PComa, posterior communicating artery; ICA, internal carotid artery; PCC, posterior cerebral circulation; DA ratio, daughter artery ratio; LA ratio, lateral angle ratio.