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Degree of Stenosis of Subclavian Artery (SA) or Innominate Artery (IA) by DSA and Incidence of Shallow Vertebral Artery (VA)
| Degree of Stenosis of SA or IA | n (%) | Shallow VA, n (%) |
|---|---|---|
| Mild stenosis | 1 (5.0%) | 1 (100%) |
| Moderate stenosis | 8 (42.1%) | 5 (62.5%) |
| Severe stenosis | 9 (47.4%) | 7 (77.8%) |
| Occlusion | 1 (5.0%) | 1 (100%) |
