Table 2.
Unruptured intracranial aneurysms. Correlations between aneurysm wall enhancement and patient demographics or aneurysm location/morphology
| Total (n = 157) | AWE (+) (n = 52) | AWE (−) (n = 105) | P-value | |
|---|---|---|---|---|
| Patient demographics | ||||
| Age, mean ± SE | 70 ± 10.9 | 71 ± 1.5 | 69 ± 1.2 | 0.75 |
| Female sex, n (%) | 113 (72) | 43 (83) | 70 (67) | 0.04 |
| Aneurysm location | 0.05 | |||
| ICA (paraclinoid), n (%) | 16 (10) | 3 (19) | 13 (81) | |
| ICA (Ach or PCoA), n (%) | 31 (20) | 10 (32) | 21 (68) | |
| ACA, n (%) | 35 (22) | 11 (31) | 24 (69) | |
| MCA, n (%) | 76 (42) | 21 (32) | 45 (68) | |
| Posterior circulation, n (%) | 9 (6) | 7 (78) | 2 (22) | |
| Aneurysm morphology | ||||
| Maxim diameter, mean ± SE (mm) | 5.1 ± 0.2 | 6.5 ± 0.6 | 4.5 ± 0.1 | <0.001 |
| Aspect ratio, mean ± SE | 1.2 ± 0.1 | 1.5 ± 0.1 | 1.4 ± 0.1 | 0.13 |
| Irregularity, n (%) | 75 (48) | 37 (71) | 38 (36) | <0.001 |
| PHASES | 7.4 ± 0.2 | 8.3 ± 0.3 | 7.0 ± 0.2 | 0.002 |
AWE: aneurysm wall enhancement, ACA: anterior cerebral artery, Aspect ratio: dome diameter/neck diameter, ICA: internal cerebral artery, MCA: middle cerebral artery, PCoA: posterior communicating artery, SE: standard error.