Table 1:

Patient and aneurysm characteristics

CharacteristicDataa
Age (yr)58.5 [SD, 12.0] (25–81)
Clinical presentationIncidental (n = 34) (57.6%), recanalization (n = 7) (11.9%), SAH (n = 9) (15.3%), symptomaticb (n = 5) (8.5%), ischemic strokec (n = 2) (3.4%), residual aneurysm (n = 2) (3.4%)
Aneurysm locationMCA (n = 15) (25.4%), AcomA (n = 13) (22.0%), BA (n = 9) (15.3%), ICA (n = 7) (11.9%), ACA (n = 6) (10.2%), Others (n = 9) (15.3%)
Aneurysm size (maximal diameter) (mm)6.2 [SD, 3.9 ] (1.0–18.0)
Aneurysm typeSaccular (n = 55) (93.2%), dissecting (n = 3) (5.1%), blisterlike (n = 1) (1.7%)
Neck diameter (mm)4.2 [SD, 1.8] (1.0–9.5)
Dome-to-neck ratio1.5 [SD, 0.7] (0.3–4.5)
Diameter of the parent artery proximal to the aneurysm (mm)2.8 [SD, 0.8 ] (1.0–4.3 )
Diameter of the parent artery distal to the aneurysm (mm)2.4 [SD, 0.8]  (1.2–4.0)
Angulation of the parent artery at the site of the aneurysm102.6° [SD, 44.1°] (23.0°–180.0°)

  • ↵a Data are mean [SD] (minimum to maximum) or absolute number of cases (relative frequency in %).

  • ↵b Symptoms not caused by SAH or ischemic stroke, including headaches (n = 3), dizziness (n = 1). and double vision (n = 1).

  • ↵c Related to the aneurysm.