Table 3.

Sensitivity and specificity for identifying lesions involving more than one-third of the middle cerebral artery territory on CT and diffusion-weighted imaging (DWI) obtained within 7 hours of symptom onset (n = 19)

ObserverSensitivitySpecificity
CT (95% CI)DWI (95% CI)CT (95% CI)DWI (95% CI)
114% (0–58)57% (18–90)100% (74–100)100% (74–100)
243% (10–82)86% (42–100)100% (74–100)92% (62–100)