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Distribution of the offending vessels
| Offending vessel | No. of patients* | |
|---|---|---|
| Single artery | 21/30 (70.0%) | |
| PICA | 21 | |
| VA | 0 | |
|
| ||
| Multiple arteries | 7/30 (23.3%) | |
| PICA+AICA | 1 | |
| PICA+AICA+VA | 1 | |
| PICA+VA | 2 | |
| PICA+SCA | 1 | |
| Small arteries | 2 | |
| Vein only | 1/30 (3.3%) | |
|
| ||
| Vein+artery (PICA) | 1/30 (3.3%) | |
Percentages do not total 100% because percentages have been rounded off.
PICA: posteroinferior cerebellar artery, VA: vertebral artery, AICA: anteroinferior cerebellar artery, SCA: superior cerebellar artery
