Table 1:
Distribution of the stenotic vessel segments in each segment
Stenosis
ICA
A1
M1
M2
P1
BA
V4
Total
30%–49%
4
11
19
6
2
7
7
56
50%–69%
5
7
17
2
2
9
5
47
70%–99%
4
7
13
2
0
6
5
37
Complete occlusion
2
0
6
1
0
0
0
9
Total
15
25
55
11
4
22
17
149
Note:
—BA indicates basilar artery.