Sensitivity, specificity, accuracy, PPV, and NPV of CE-MRA and unenhanced 2D TOF MRA for detection of ≥70% ICA stenosis* based on CTA reference measurements
| Technique | Sensitivity | Specificity | Accuracy | PPV | NPV |
|---|---|---|---|---|---|
| CE-MRA | 83.6% (46/55) | 95.7% (286/299) | 93.8% (332/354) | 78.0% (46/59) | 96.9% (286/295) |
| 2D TOF MRA | 80.0% (44/55) | 95.3% (285/299) | 92.9% (329/354) | 75.9% (44/58) | 96.3% (285/296) |
Note:—PPV indicates positive predictive value; NPV, negative predictive value; ICA, internal carotid artery.
* Scores of 3 and 4.