Carotid Artery Stenosis: Comparison of 3D Time-of-Flight MR Angiography and Contrast-Enhanced MR Angiography at 3T
Table 1
Stenosis grade results.
Patient no.
Side
Stenosis grade TOF
Stenosis grade CEMRA
1
Right
4
4
Left
0
0
2
Right
2
2
Left
4
4
3
Right
3
2
Left
2
1
4
Right
2
2
Left
4
4
5
Right
0
0
Left
3
2
6
Right
0
0
Left
3
3
7
Right
1
1
Left
1
1
8
Right
3
3
Left
0
0
9
Right
3
3
Left
0
0
10
Right
2
1
Left
0
0
11
Right
4
3
Left
0
0
12
Right
3
2
Left
0
0
13
Right
3
2
Left
2
3
14
Right
4
3
Left
0
0
15
Right
0
0
Left
4
3
16
Right
0
0
Left
0
0
17
Right
0
0
Left
4
4
18
Right
3
2
Left
0
0
19
Right
0
0
Left
0
0
20
Right
3
3
Left
0
0
21
Right
0
0
Left
3
3
22
Right
3
3
Left
0
0
23
Right
3
3
Left
0
0
TOF: time-of-flight MR angiography; CEMRA: contrast-enhanced MR angiography. 0 = normal; 1 = mild stenosis, less than 50%; 2 = moderate stenosis, 50–69%; 3 = severe stenosis, more than 70% but less than full occlusion; 4 = occlusion.
