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)
| Sensitivity | Specificity | Positive Predictive Value | Negative Predictive Value | |
|---|---|---|---|---|
| Observer 1 | 83.3% (15/18) | 96.7% (29/30) | 93.8% (15/16) | 90.6% (29/32) |
| Observer 2 | 77.8% (14/18) | 100% (30/30) | 100% (14/14) | 88.2% (30/34) |
| Observer 3 | 83.3% (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.