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TABLE 3: 
Sensitivity, specificity, positive predictive values, and negative predictive values for the detection of high-grade internal carotid artery stenosis of 3D-CDS (CDS was criterion standard for all three observers)
SensitivitySpecificityPositive Predictive ValueNegative Predictive Value
Observer 183.3% (15/18)96.7% (29/30)93.8% (15/16)90.6% (29/32)
Observer 277.8% (14/18)100% (30/30)100% (14/14)88.2% (30/34)
Observer 383.3% (15/18)100% (30/30)100% (15/15)90.9% (30/33)
  • Note.—CDS indicates color Doppler sonography; 3D-CDS, three-dimensional color Doppler sonography.