Distribution of severe (≥70%) stenosis, single versus multiple stenosis
| Group and Location | No. of Lesions |
|---|---|
| Single stenosis | 56 |
| Intracranial | 37 (66) |
| M1 | 16 |
| PICA | 7 |
| VA | 4 |
| P1–3 | 4 |
| M2 | 2 |
| A2 | 1 |
| ACHA | 1 |
| BA | 1 |
| AICA | 1 |
| Extracranial | 19 (34) |
| ICA | 14 |
| VA | 4 |
| SA | 1 |
| Multiple stenosis | 333 |
| Intracranial | 166 (50) |
| M1 | 42 |
| A1 | 24 |
| VA | 23 |
| P1–3 | 19 |
| ICA | 15 |
| BA | 11 |
| M2 | 8 |
| A2 | 5 |
| VBJ | 7 |
| PICA | 7 |
| AICA | 3 |
| P4 | 1 |
| SCA | 1 |
| Extracranial | 167 (50) |
| ICA | 102 |
| VA | 57 |
| SA | 7 |
| CCA | 1 |
Note.—Data in parentheses are percentages. Abbreviations are defined in the footnote for Table 1.