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Table 2 Intra-study reproducibility data in healthy and heart failure groups

From: Diffuse myocardial fibrosis evaluation using cardiac magnetic resonance T1 mapping: sample size considerations for clinical trials

 

Healthy subjects

Heart failure subjects

 

λ

ECV

λ

ECV

Mean ± SD

0.442 ± 0.037

0.267 ± 0.028

0.481 ± 0.052

0.286 ± 0.034

Min: Max

0.367 : 0.530

0.202 : 0.325

0.368 : 0.634

0.240 : 0.398

Mean Diff ± SD

0.012 ± 0.009

0.007 ± 0.006

0.012 ± 0.028

0.007 ± 0.017

Corr Coef

0.97

0.98

0.86

0.88

CV

0.020

0.022

0.058

0.059

BA limit

-0.03 : 0.006

-0.018 : 0.004

-0.068 : 0.043

-0.041 : 0.026

  1. λ: partition coefficient; ECV: extracellular volume fraction; Mean Diff, mean difference; Corr Coef, correlation coefficient; CV, coefficient of variability; BA limit, Bland-Altman limits of agreement.
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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