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Table 2 Inter-scan reproducibility

From: 3D black blood VISTA vessel wall cardiovascular magnetic resonance of the thoracic aorta wall in young, healthy adults: reproducibility and implications for efficacy trial sample sizes: a cross-sectional study

 

ICCa

95 % CIa

Mean difference (SD)a

95 % LOAa

- Mean aortic lumen area (cm2)a

0.98*

0.95, 0.99

−0.02 (0.08)

−0.17, 0.14

- Mean aortic total vessel area (cm2)a

0.98*

0.96, 0.99

−0.01 (0.08)

−0.17, 0.16

- Mean aortic wall area (cm2)a

0.97*

0.92, 0.99

0.01 (0.03)

−0.05, 0.07

- Mean aortic wall thickness (mm)a

0.94*

0.87, 0.98

0.01 (0.05)

−0.08, 0.11

- Maximum aortic wall thickness (mm)a

0.76*

0.50, 0.90

0.04 (0.17)

−0.29, 0.37

- Mean aortic WA/TVA ratioa

0.94*

0.87, 0.98

0.00 (0.01)

−0.01, 0.02

  1. * P < .001
  2. aICC: intraclass correlation coefficient (two-way random effects model assessing absolute of single measures). CI: confidence interval. LOA: limits of agreement. WA: wall area. TVA: total vessel area