Stenosis rating* | Intracranial | Cervical | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
 | I-ICA | ACA | MCA | PCA | I-VA | BA | CCA | SUB | E-ICA | ECA | E-VA |
Total | 216 | 216 | 216 | 216 | 216 | 216 | 216 | 216 | 216 | 216 | 216 |
Without Stenosis | 178 | 184 | 186 | 173 | 190 | 197 | 142 | 180 | 168 | 202 | 163 |
< 10% stenosis | 28 | 29 | 15 | 30 | 17 | 15 | 68 | 34 | 38 | 12 | 48 |
10-50% stenosis | 9 | 2 | 10 | 12 | 6 | 3 | 6 | 2 | 10 | 1 | 5 |
51-99% stenosis | 1 | 1 | 5 | 1 | 3 | 1 | 0 | 0 | 0 | 1 | 0 |
Occlusion | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Abnormal (%) | 17.59 | 14.81 | 13.89 | 19.91 | 12.04 | 8.80 | 34.26 | 16.67 | 22.22 | 6.48 | 24.54 |