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Table 3 Grand means, between-scan standard deviations (SDs) and coefficients of variation for kinetic parameters by vendor

From: Scan-rescan reproducibility of quantitative assessment of inflammatory carotid atherosclerotic plaque using dynamic contrast-enhanced 3T CMR in a multi-center study

 

Mean

SD

CV (%) (95% CI)

K trans*

   

All

0.062

0.015

25% (15%-28%)

GE

0.064

0.017

27% (16%-40%)

Philips

0.060

0.013

21% (10-22%)

p §

0.6

0.12

0.12

v p

   

All

0.067

0.042

62% (36%-73%)

GE

0.068

0.042

62% (46-73%)

Philips

0.066

0.040

60% (18-71%)

p §

0.8

0.9

0.9

  1. *Ktrans: transfer constant in min−1.
  2. v p : plasma volume fraction (unitless).
  3. CI : confidence interval.
  4. §the linear mixed model test for the comparison of the means and the permutation test for the comparison of the SDs and CVs (NS : p > 0.05).