Distribution of arterial stenoses detected by TOF-MRA and CE-MRA in comparison with DSA (total arterial segments available for comparison = 410)
| Arterial Segment | TOF-MRA | CE-MRA | DSA | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Stenosis Severity | Stenosis Severity | Stenosis Severity | |||||||
| ≤50% | >50, <99% | Occlusion | ≤50% | >50, <99% | Occlusion | ≤50% | >50, <99% | Occlusion | |
| Common carotid artery | 3 | 2 | 3 | 5 | 1 | 0 | 3 | 0 | 0 |
| Cervical ICA | 2 | 1 | 6 | 4 | 4 | 4 | 7 | 5 | 4 |
| Pretrocavernous ICA | 2 | 3 | 4 | 1 | 1 | 1 | 0 | 2 | 1 |
| Supraclinoid ICA | 3 | 4 | 6 | 1 | 5 | 3 | 1 | 1 | 3 |
| MCA | 3 | 6 | 14 | 1 | 2 | 11 | 2 | 1 | 10 |
| Anterior cerebral artery | 2 | 2 | 2 | 0 | 1 | 0 | 2 | 1 | 0 |
| Cervical vertebral artery | 0 | 0 | 1 | 1 | 0 | 1 | 2 | 0 | 1 |
| Intradural vertebral artery | 3 | 0 | 3 | 1 | 0 | 0 | 0 | 1 | 0 |
| Basilar artery | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Posterior cerebral artery | 0 | 3 | 1 | 0 | 2 | 0 | 2 | 1 | 0 |
| Total | 20 | 22 | 40 | 14 | 18 | 20 | 19 | 12 | 19 |