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Table 3 Summary of Agreement between DSA and 3D CMR VWI images

From: Assessment of carotid atherosclerotic disease using three-dimensional cardiovascular magnetic resonance vessel wall imaging: comparison with digital subtraction angiography

Variables

All arteries (n = 101)

Arteries with stenosis > 50% of US (n = 50)

 

ICC

CMR reader 1

DSA

Mean Difference ± SE

P-value

Limits of Agreement

ICC

CMR reader 1

DSA

Mean Difference ± SE

P-value

Limits of Agreement

CCA, mm

0.92(0.88,0.95)

7.67 ± 1.35

9.65 ± 1.82

− 1.98 ± 0.09

<0.001

−3.68, −0.27

0.91(0.85,0.95)

7.53 ± 1.41

9.44 ± 1.93

−1.91 ± 0.14

<0.001

−3.79, −0.04

C1, mm

0.98(0.94,0.97)

4.56 ± 1.12

5.12 ± 1.14

−0.55 ± 0.03

<0.001

−1.20,0.09

0.98(0.96,0.99)

4.31 ± 1.31

4.83 ± 1.29

−0.52 ± 0.05

<0.001

−1.27,0.23

C2, mm

0.97(0.95,0.98)

4.07 ± 1.06

4.63 ± 1.04

−0.56 ± 0.04

<0.001

−1.27,0.15

0.96(0.94,0.98)

3.86 ± 1.26

4.44 ± 1.19

−0.57 ± 0.06

<0.001

−1.47,0.33

C3, mm

0.95(0.92,0.96)

4.05 ± 1.12

4.55 ± 1.05

−0.51 ± 0.05

<0.001

−1.48,0.46

0.95(0.92,0.97)

3.78 ± 1.25

4.36 ± 1.13

−0.58 ± 0.07

<0.001

−1.57,0.41

C4, mm

0.97(0.96,0.98)

3.54 ± 1.24

3.98 ± 1.17

−0.44 ± 0.04

<0.001

−1.21,0.36

0.96(0.92,0.97)

3.29 ± 1.35

3.76 ± 1.22

−0.47 ± 0.08

<0.001

−1.52,0.58

C5, mm

0.93(0.89,0.95)

3.82 ± 1.17

4.34 ± 1.10

−0.51 ± 0.06

<0.001

−1.67,0.64

0.89(0.81,0.94)

3.62 ± 1.36

4.23 ± 1.23

−0.61 ± 0.11

<0.001

−2.18,0.96

C6, mm

0.96(0.95,0.98)

2.98 ± 0.94

3.39 ± 0.92

−0.41 ± 0.04

<0.001

−1.10,0.28

0.96(0.92,0.98)

2.83 ± 1.14

3.27 ± 1.06

−0.44 ± 0.06

<0.001

−1.33,0.45

C7, mm

0.92(0.88,0.95)

2.82 ± 0.85

3.23 ± 0.80

−0.41 ± 0.05

<0.001

−1.30,0.48

0.84(0.71,0.91)

2.65 ± 0.87

3.10 ± 0.73

−0.45 ± 0.09

<0.001

−1.64,0.73

Stenosis (%)

0.98(0.98,0.99)

36.00 ± 28.97

34.13 ± 27.89

1.87 ± 0.72

0.011

−12.28,16.02

0.99(0.98,0.99)

59.20 ± 18.87

56.12 ± 17.13

2.48 ± 0.56

<0.001

−5.28,10.25

Stenosis diameter, mm

0.93(0.89,0.95)

1.89 ± 1.65

2.10 ± 1.95

−0.22 ± 0.09

0.026

−2.09,1.66

0.99(0.99,0.99)

2.00 ± 1.04

2.35 ± 1.05

−0.35 ± 0.02

<0.001

−0.67, −0.03

Reference diameter, mm

0.93(0.90,0.96)

3.61 ± 2.47

3.96 ± 2.96

−0.35 ± 0.14

0.012

−3.0,2.3

0.97(0.95,0.98)

4.83 ± 1.21

5.40 ± 1.37

−0.57 ± 0.06

<0.001

−1.43,0.29

Lesion length, mm

0.96(0.95,0.98)

8.59 ± 7.29

6.08 ± 5.74

2.51 ± 0.25

<0.001

−2.3,7.3

0.98(0.97,0.99)

13.81 ± 6.23

10.35 ± 5.08

3.46 ± 0.20

<0.001

0.70,6.20

  1. Note: 29 arteries with total occlusion displayed on DSA images were excluded. After measurement of the reference diameter and lesion length, 2 additional arteries with total occlusion displayed on CMR images were excluded
  2. Comparison between CMR reader 2 and DSA was not shown because of a strong similarity with results for CMR reader 1
  3. Data are presented as mean ± standard deviation. Numbers in parentheses are 95% CI
  4. 3D CMR VWI, three-dimensional cardiovascular magnetic resonance vessel wall imaging; CCA, common carotid artery; CI, confidence interval; DSA, digital subtraction angiography; ICC, intraclass correlation coefficient; SD, standard deviation; SE, standard error; US, ultrasound
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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