Table 1

Aneurysm characteristics

Total
(n=92)
WEB-17
(n=54)
WEB-21
(n=38)
P value
Status (n (%))0.03
 Unruptured82 (89.1)49 (90.7)33 (86.8)
 Ruptured6 (6.5)5 (9.3)1 (2.6)
 Recurrent4 (4.4)0 (0)4 (10.6)
Location (n (%))0.94
Typical73 (79.3)43 (79.6)30 (78.9)
 ACom20 (21.7)14 (25.9)6 (15.7)
 MCA bifurcation39 (42.4)21 (38.9)18 (47.4)
 ICA terminus9 (9.8)7 (12.9)2 (5.3)
 Basilar tip5 (5.4)1 (1.9)4 (10.5)
Atypical19 (20.7)11 (20.4)8 (21.1)
 ICA ophthalmic8 (8.7)3 (5.5)5 (13.2)
 ICA ACho1 (1.1)1 (1.9)0 (0)
 ICA PCom5 (5.4)5 (9.2)0 (0%)
 M2-M32 (2.2)1 (1.9)1 (2.6)
 AICA1 (1.1)1 (1.9)0 (0)
 SCA2 (2.2)0 (0)2 (5.3)
Aneurysm size
 Sac maximum width (mm)4.6 (3.8–5.5)4.5 (3.7–5.7)4.6 (3.9–5.5)0.81
 Sac height (mm)4.5 (3.8–5.2)4.5 (3.6–5.0)4.6 (4.0–5.3)0.52
 Neck width (mm)3.6 (3.0–4.5)3.6 (3.0–4.5)3.5 (3.1–4.5)0.96
 Dome to neck ratio1.2 (1.1–1.5)1.2 (1.1–1.4)1.2 (1.0–1.5)0.67
Sac maximum width (n (%))1.00
 ≤3 mm11 (11.9)7 (12.9)4 (10.5)
 >3 mm81 (88.1)47 (87.1)34 (89.5)
Sac neck (n (%))
 ≤4 mm59 (64.2)35 (64.8)24 (63.2)
 >4 mm33 (35.8)19 (35.2)14 (36.8%)
Angle aneurysm/artery ≥45° (n (%))28 (30.4)13 (24.1)15 (39.5%)0.12
Successful WEB implantation (n (%))88 (95.6)51 (94.4)37 (97.4%)0.64
  • Continuous variables are described as median (IQR) and categorical variables as number (%).

  • ACho, anterior choroidal artery; ACom, anterior communicating artery; AICA, anteroinferior cerebellar artery; ICA, internal carotid artery; MCA, middle cerebral artery; PCom, posterior communicating artery; SCA, superior cerebellar artery; WEB, Woven EndoBridge.