Table 2 Accuracy of VWI and 3D TOF-MRA in assessing VBA geometric configurations (n = 192 patients).

From: Vessel wall imaging of vertebrobasilar artery configurations associated with posterior circulation infarction and high-risk atherosclerotic plaques

VBA geometric configurations

VWI (n)

3D TOF-MRA (n)

Total

T

W

L

T

W

L

VWI + 3D TOF-MRA

Tuning fork (T)

71

2

1

67

0

6

73

Walking (W)

2

43

0

0

40

5

45

Lambda (L)

0

0

73

2

2

70

74

Total

73

45

74

69

42

81

192

\(\:\kappa\:\) value (95% CI), P value

0.960 (0.925–0.995), P < .001

0.880 (0.821–0.939), P < .001

 

VAH

+

–

+

–

Total

VWI + 3D TOF-MRA

+

58

3

60

1

61

 

–

3

128

15

116

131

\(\:\kappa\:\) value (95% CI), P value

0.928 (0.871–0.985), P < .001

0.819 (0.735–0.903), P < .001

Sensitivity, % (95% CI)

95.1 (86.0-98.9)

80.0 (69.5–87.6)

 

Specificity, % (95% CI)

97.7 (93.2–99.5)

99.2 (94.8–100.0)

 
  1. 3D TOF-MRA 3-dimensional time-of-flight magnetic resonance angiography, VAH vertebral artery hypoplasia, VBA vertebrobasilar artery, VWI vessel wall imaging.
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