Table 2:

Characteristics of aneurysms treated

GDCsMatrix CoilsTotal
Aneurysms harbored230159389
Embolized aneurysms (%)219 (95.2)145 (91.2)364 (93.6)
Nonembolized aneurysms (%)11 (4.8)14 (8.8)25 (6.4)
    Wide neck6 (54.6)4 (28.6)10 (40)
    Branch from sac4 (36.4)3 (21.4)7 (28)
    Severe condition1 (9.1)7 (50)8 (32)
Ruptured160 (73.1)100 (69)260 (71.4)
Unruptured59 (26.9)45 (31)104 (28.6)
Anterior circulation (%)198 (90.4)134 (92.4)332 (91.2)
    ICA71 (32.4)54 (37.2)125 (34.3)
    AcomA65 (29.7)49 (33.8)114 (31.3)
    MCA47 (21.5)23 (15.9)70 (19.2)
    ACA15 (6.9)8 (5.5)23 (6.3)
Posterior circulation (%)21 (9.6)11 (7.6)32 (8.8)
    BA14 (6.4)6 (4.1)20 (5.5)
    VA5 (2.3)4 (2.8)9 (2.5)
    PCA1 (0.5)01 (0.3)
    PICA1 (0.5)1 (0.7)1 (0.3)
Aneurysm size, mean ± SD5.8 ± 1.35.3 ± 1.15.7 ± 1.0
(range) (mm)(2–26)(2–25)(2–26)
Neck size, mean ± SD2.3 ± 0.42.7 ± 0.52.6 ± 0.4
(range) (mm)(1–5)(1–6)(1–6)
  • Note:—GDC indicates Gugliemi detachable coil; ICA, internal carotid artery; AcomA, anterior communicating artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; BA, basilar artery; VA, vertebral artery; PCA, posterior cerebral artery; PICA, posterior inferior cerebral artery.