Table 2:

Baseline and hemodynamic characteristics for each group

Stable AneurysmsGrowing Aneurysms: BaselineGrown Aneurysms: Follow-Up Imaging
No.815656
Sexb
    Male11 (14%)7 (12%)
    Female53 (65%)48 (86%)
    Unknown17 (21%)1 (2%)
Artery (%)
    ACA5 (6%)1 (2%)
    AcomA8 (10%)8 (14%)
    ICA37 (46%)18 (32%)
    MCA16 (20%)19 (34%)
    PcomA12 (15%)3 (5%)
    Posterior circulation3 (3%)7 (13%)
Previous SAH = yes (%)2 (2%)14 (25%)a
Configuration = lateral (%)33 (41%)18 (32%)
Age (mean) (SD) (yr)59 (18)55 (14)59 (13)
PHASES (mean) (SD)3 (2)4 (3)c5 (3)a
    Without hypertension and population3 (3)4 (3)5 (3)c
ELAPSS (mean) (SD)14 (6)15 (7)17 (6)b
    Without population14 (6)15 (7)17 (6)b
Hemodynamic characteristics
    ICI (median) (IQR)0.4 (0.2–1.0)0.5 (0.3–1.2)0.6 (0.3–1.2)
    SR (median) (IQR) (1/s)207.3 (124.0–317.5)190.1 (67.8–273.7)126.3 (65.1–177.0)a
    VE (median) (IQR) (cm/s)9.4 (5.9–13.6)8.0 (4.6–11.4)6.6 (3.8–10.2)b
    VO (median) (IQR) (1/s)270.5 (165.5–416.2)256.9 (93.9–384.5)177.5 (88.3–255.0)a
    Max WSS (median) (IQR) (dyne/cm2)175.2 (126.8–239.2)149.5 (107.6–194.5)c146.8 (94.7–186.1)b
    Mean WSS (median) (IQR) (dyne/cm2)17.5 (11.2–29.9)16.5 (6.5–24.2)11.5 (5.4–18.8)a
    LSA (median) (IQR) (%)54 (29–74)53 (31–77)68 (50–89)c
    SCI (median) (IQR)3.2 (1.9–4.6)2.7 (1.0–4.2)3.2 (0.2–5.7)
    Max OSI (median) (IQR)0.3 (0.1–0.4)0.2 (0.2–0.4)0.3 (0.2–0.4)
    Mean OSI (median) (IQR)0.01 (0.01–0.01)0.01 (0.0–0.01)0.01 (0.01–0.02)
    CLL (median) (IQR)0.7 (0.2–1.4)0.6 (0.4–1.5)1.1 (0.5–2.0)c
    PODE (median) (IQR)0.1 (0.1–0.2)0.1 (0.1–0.2)0.2 (0.1–0.3)

  • Note:–ACA indicates anterior cerebral artery; AcomA, anterior communicating artery; PcomA, posterior communicating artery; Q, flow rate; ICI, inflow concentration index; SR, mean aneurysm shear rate; SCI, shear concentration index; max, maximum. P-value compared to stable aneurysms.

  • ↵a P < .001.

  • ↵b P < .02.

  • ↵c P < .05.