Distribution of lesions on MRA and CA
| Lesions | MRA (n = 62) | CA (n = 64) | P Value |
|---|---|---|---|
| ICA | 11 (17.7%) | 11 (17.5%) | .94 |
| ACA | 11 (17.7%) | 17 (27.0%) | .23 |
| MCA | 34 (54.8%) | 26 (41.3%) | .11 |
| M1 | 24 | 16 | .10 |
| M2 | 10 | 9 | .75 |
| M4 | 0 | 1 | .32 |
| PCA | 5 (8.1%) | 9 (14.3%) | .28 |
| P1 | 2 | 2 | .97 |
| P2 | 3 | 7 | .21 |
| Vertebrobasilar | 0 | 0 | |
| Anterior choroidal | 0 | 0 | |
| PcomA | 1 (1.6%) | 1 (1.6%) | .98 |
Note:— MRA indicates MR angiography; CA, conventional angiography; ICA, internal carotid artery; ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery; PcomA, posterior communicating artery.