Table 1:

Aneurysm characteristics

CharacteristicNo. (%) or Mean (Range)
Aneurysm location
 Anterior circulationa46 (88.5)
  ICA cavernous segment2 (3.8)
  ICA paraophthalmic segment29 (55.7)
  ICA posterior communicating segment12 (23.1)
  ICA terminal segment2 (3.8)
  M1 segment of MCA1 (1.9)
 Posterior circulation6 (11.5)
  Basilar artery3 (5.8)
  Vertebral artery2 (3.8)
  Posterior cerebral artery1 (1.9)
Neck width (mmb)5.0 (1.0–21.0)
Maximum aneurysm sac diameter (mmb)9.0 (1.0–28.0)
 <1032 (60.8)
 10–2518 (34.6)
 ≥252 (3.8)
PED number (per aneurysm)0.86 (45/52)
Adjunctive coils placed15 (28.8)

  • ↵a ICA according to the New York University classification.14

  • ↵b Millimeter to the nearest 0.5.