Table 1.

Intracranial arterial characteristics by arterial segments

	Middle cerebral artery (n=32)	Vertebral artery (n=32)	Basilar artery (n=32)
Arterial diameter (mm)	3.13±0.52	3.46±0.73	3.60±0.66
Media thickness (mm)	0.15±0.05	0.19±0.10	0.19±0.07
Media behind plaque (mm)	0.10±0.05	0.11±0.06	0.12±0.07
Adventitia thickness (mm)	0.05±0.03	0.10±0.06	0.06±0.02
Adventitia behind plaque (mm)	0.05±0.03	0.11±0.07	0.05±0.05
Media ratio to arterial radius (%)	9.5±3.5	11.1±4.9	11.6±3.7
Adventitia ratio to arterial radius (%)	3.2±1.8	5.8±3.2	3.9±1.7
Area stenosis (%)	37±25	30±24	20±20