Table 2

Aneurysm characteristics by total pool and aneurysm location

CharacteristicsPoolBy aneurysm locationP value
MCA bifurcationBasilar apex
Aneurysm shape (N/total (%))
 Spherical55/115 (47.8)22/46 (47.8)33/69 (47.8)1.0
 Ellipsoid35/115 (30.4)12/46 (26.1)23/69 (33.3)0.54
 Bilobed15/115 (13.0)8/46 (17.4)7/69 (10.1)0.27
 Multilobed10/115 (8.7)4/46 (8.7)6/69 (8.7)1.0
Aneurysm side (N/total (%))
 Right25/115 (21.7)25/46 (54.3)n/a
 Left21/115 (18.3)21/46 (45.7)n/a
 Midline69/115 (40)n/a69/69 (100)
Aneurysm neck size (mean±SD)4.57±1.594.16±1.264.85±1.730.1
Dome to neck ratio (mean±SD)1.48±0.351.56±0.391.42±0.310.04
Maximum diameter (mm) (mean±SD)7.65±2.957.64±2.837.66±3.050.9
Retreatment rate (N/total (%))10/115 (8.7)2/46 (4.3)8/69 (11.6)0.31
In-stent stenosis rate at follow-up (N/total (%))5/67 (7.5)3/2313 2/44 (4.5)0.33
Aneurysm rupture during follow-up period (N/total (%))1/115 (0.9)1/46 (2.2)0/69 (0.0)0.4