Morphology of CA and MRA stenoses
| Morphology | MRA (n = 56) | CA (n = 54) | P Value |
|---|---|---|---|
| Smooth | 45 (80.4%) | 45 (83.3%) | .80 |
| Irregular | 11 (19.6%) | 9 (16.7%) | .80 |
| Concentric | 54 (96.4%) | 50 (92.6%) | .57 |
| Eccentric | 2 (3.6%) | 4 (7.4%) | .57 |
| Graduated | 11 (19.6%) | 11 (20.4%) | .95 |
| Single | 52 (92.9%) | 48 (88.9%) | .64 |
| Beading | 6 (10.7%) | 6 (11.1%) | .97 |
| Multiple | 2 (3.6%) | 6 (11.1%) | .33 |
Note:— CA indicates conventional angiography; MRA, MR angiography. Data exclude occlusions and aneurysms.