Table 1:

Baseline characteristics

ParameterNo.
No. of procedures329
No. of aneurysms380
Sex
    Female272 (82.7%)
    Male57 (17.3%)
Median age (range) (yr)58 (18–82)
Smoking85 (25.8%)
Multiple aneurysms148 (45%)
Pretreatment mRS
    0–2314 (95.4%)
    3–515 (4.6%)
Aneurysm location
    ICA
        Petrous7 (1.8%)
        Cavernous63 (16.6%)
        Paraophthalmic212 (55.8%)
        PcomA34 (9%)
    ACA/AcomA5 (1.3%)
    MCA8 (2.1%)
    Posterior circulation51 (13.4%)
Aneurysm shape
    Saccular257 (67.6%)
    Blister11 (2.9%)
    Fusiform102 (26.9%)
    Dissecting10 (2.6%)
Aneurysm measurements (median) (range) (mm)
    Maximal diametera7.7 (1–44.5)
    Neck size (for saccular aneurysms)b4 (1–15.6)
    Dome-to-neck ratio (for saccular aneurysms)b1.3 (0.4–3.5)
Daughter sac94 (24.7%)
Subarachnoid hemorrhage
    Acute (<2 wk)10 (3%)
    Remote (>2 wk)32 (9.7%)
Prior treatment
    Endovascular33 (8.7%)
    Operation6 (1.6%)
    Both4 (1.1%)

  • Note:—ACA indicates anterior cerebral artery; PcomA, posterior communicating artery; AcomA, anterior communicating artery.

  • ↵a Data are missing for 11 aneurysms.

  • ↵b Data are missing for 41 aneurysms.