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Table 3: Interobserver reliability analysis: comparison of an experienced sonographer and 2 ultrasound-inexperienced stroke fellows.
Vessel Segments Stroke Fellow 1 (n = 24) Stroke Fellow 2 (n = 24) Sonographer (n = 24)
No. Visualized Sensitivity No. Visualized Sensitivity No. Visualized Sensitivity
Right 
    MCA 
        M1 22 0.92 22 0.92 23 0.96
        M2 22 0.92 22 0.92 23 0.96
        M3 21 0.88 22 0.92 22 0.92
    PCA 
        P1 22 0.92 22 0.92 23 0.96
        P2 22 0.92 22 0.92 23 0.96
        P3 18 0.75 19 0.79 21 0.88
    ACA 
        A1 21 0.88 21 0.84 23 0.96
        A2 21 0.88 22 0.92 20 0.84
Left 
    MCA 
        M1 23 0.96 23 0.96 23 0.96
        M2 23 0.96 23 0.96 23 0.96
        M3 17 0.71 20 0.83 22 0.92
    PCA 
        P1 23 0.96 23 0.96 23 0.96
        P2 23 0.96 23 0.96 23 0.96
        P3 19 0.79 20 0.83 23 0.96
    ACA 
        A1 20 0.83 19 0.79 23 0.96
        A2 23 0.96 23 0.96 22 0.92
Note:—MCA indicates middle cerebral artery; PCA, posterior cerebral artery; ACA, anterior cerebral artery.