Table 1 Diagnostic performance for stenosis detection at 3T versus 1.5T contrast-enhanced MRA
| Â | Stenosis >0% | Stenosis >50% | Stenosis >75% | Occlusion | ||||
|---|---|---|---|---|---|---|---|---|
| Â | 3T | 1.5T | 3T | 1.5T | 3T | 1.5T | 3T | 1.5T |
sensitivity | 100% | 100% | 98% (63/64) | 92% (59/64) | 93% (56/60) | 90% (54/60) | 97% (35/36) | 97% (35/36) |
specificity | - | - | 95% (39/41) | 95% (39/41) | 100% (45/45) | 100% (45/45) | 100% (69/69) | 100% (69/69) |
p-value McNemar | not applicable | 0.13 | 0.48 | not applicable | ||||