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Relationship between FHVs and artery status
| Total | FHV (+) | FHV (−) | |
|---|---|---|---|
| Occlusion | |||
| VA | 3 | 0 | 3 |
| BA | 4 | 4 | 0 |
| PCA P1 | 8 | 7 | 1 |
| PCA P2 | 10 | 9 | 1 |
| Significant stenosis (>50%) | |||
| BA | 5 | 2 | 3 |
| PCA | 5 | 1 | 4 |
| Mild stenosis (<50%) | 12 | 0 | 12 |
| No stenosis | 40 | 2 | 38 |
VA = Vertebral artery
BA = basilar artery.
