Patient characteristics
| Characteristic | |
|---|---|
| Patients (no.) | 14 |
| Age (mean ± SD, range) (y) | 43.2 ± 19.3, 6–71 |
| Sex (no.) | |
| Male | 5 |
| Female | 9 |
| Clinical diagnoses at onset (no.) | |
| Hemorrhagic stroke | 4 |
| Ischemic stroke | 5 |
| Transient ischemic attack | 4 |
| Asymptomatic | 1 |
| Arteries (no.) | 27 |
| Suzuki grades (no. of arteries) | |
| Stage I | 3 |
| Stage II | 2 |
| Stage III | 12 |
| Stage IV | 4 |
| Stage V | 3 |
| Stage VI | 3 |
| Evaluation of ICA/CCA ratio (no. of arteries) | |
| Ultrasonography | 20 |
| DSA | 7 |
| CBNS (no. of arteries) | |
| Positive | 15 |
| Negative | 12 |