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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).