Table 1. Patients’ baseline characteristics.

	All (n = 39), described as n (%) or mean ± SD
Age (years)	37.6 ± 18.0
Sex (female)	27 (69.2)
Suzuki grade	3.24 ± 0.81
Initial symptom (hemispheres)
Hemorrhage (ICH, IVH, SAH)	5 (6.4)
Ischemic (CI, TIA)	39 (50.0)
Asymptomatic	34 (43.6)
Changes in VWE (hemispheres)	33 (42.3)
Stenosis progression (hemispheres)	21 (26.9)
New symptom (hemispheres)	19 (12.8)

CI: cerebral infarction, ICH: intracranial hemorrhage, IVH: intraventricular hemorrhage, SAH: subarachnoid hemorrhage, SD: standard deviation, TIA: transit ischemic attack, VWE: vessel wall enhancement.