Table 1.

Baseline characteristics of the 44 patients

Age-years
Median	67.4
IQR	49–79
Male sex, n (%)	34 (77.2)
Stenosis ≥90%, n (%)	27 (61.3)
Contralateral stenosis, n (%)
≥50	7 (15.9)
≥60	7 (15.9)
≥70	3 (7)
≥80	5 (11.4)
≥90	0
Occlusion, n (%)	2 (5)
CTP
Hypoperfusion, n (%)	21 (47.7)
Normal, n (%)	23 (52.3)
Clinical presentation
Amaurosis fugax, n (%)	2 (5)
Transient ischaemic attack, n (%)	23 (52.3)
Ischaemic stroke, n (%)	9 (20.5)
Risk factors
Hypertension, n (%)	21 (47.7)
Diabetes mellitus, n (%)	14 (31.8)
Coronary artery diseases, n (%)	5 (11.4)
Smoking, n (%)	6 (13.6)
Alcohol use, n (%)	9 (20.4)
Circle of Wills
Normal	27 (61.4)
Variation	17 (38.6)

CTP, CT perfusion.