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Table 5 Intra- and Inter-observer reproducibility

From: Real-time cardiovascular magnetic resonance T1 and extracellular volume fraction mapping for tissue characterisation in aortic stenosis

Observer Parameter Mean Difference (SD of the Diff.) ICC (95% CI) CoV (%)
Intra-observer T1 midventricular SAX native 6 (7) 0.99 (0.96–1.00) 0.6%
MOLLI T1 septal ROI native 2 (11) 0.99 (0.97–1.00) 0.9%
  T1 midventricular SAX post-contrast 8 (15) 0.97 (0.89–0.99) 2.9%
  T1 septal ROI post-contrast 4 (14) 0.98 (0.94–0.99) 2.8%
  ECV midventricular SAX 0.44 (0.76) 0.97 (0.91–0.99) 2.9%
  ECV septal ROI 0.02 (0.60) 0.99 (0.97–1.00) 2.4%
Intra-observer T1 midventricular SAX native 6 (5) 0.99 (0.91–1.00) 0.4%
Real-time T1 septal ROI native 1 (8) 1.00 (0.99–1.00) 0.6%
  T1 midventricular SAX post-contrast 5 (4) 1.00 (0.94–1.00) 0.9%
  T1 septal ROI post-contrast 2 (5) 1.00 (0.99–1.00) 1.1%
  ECV midventricular SAX 0.42 (0.45) 0.98 (0.88–1.00) 1.7%
  ECV septal ROI 0.10 (0.62) 0.99 (0.97–1.00) 2.4%
Inter-observer T1 midventricular SAX native 7 (14) 0.98 (0.94–0.99) 1.1%
MOLLI T1 septal ROI native 1 (15) 0.98 (0.94–0.99) 1.2%
  T1 midventricular SAX post-contrast 3 (4) 1.00 (0.98–1.00) 0.8%
  T1 septal ROI post-contrast 1 (5) 1.00 (0.99–1.00) 1.0%
  ECV midventricular SAX 0.35 (0.76) 0.98 (0.94–0.99) 3.0%
  ECV septal ROI 0.09 (0.45) 0.99 (0.99–1.00) 1.8%
Inter-observer T1 midventricular SAX native 7 (9) 0.99 (0.95–1.00) 0.7%
Real-time T1 septal ROI native 3 (11) 0.99 (0.99–1.00) 0.8%
  T1 midventricular SAX post-contrast 4 (5) 1.00 (0.97–1.00) 1.0%
  T1 septal ROI post-contrast 1 (6) 1.00 (0.99–1.00) 1.3%
  ECV midventricular SAX 0.34 (0.48) 0.99 (0.95–1.00) 1.8%
  ECV septal ROI 0.04 (0.36) 1.00 (0.99–1.00) 1.4%
  1. SD standard deviation; ICC intraclass correlation coefficient; CoV coefficient of variation; ECV extracellular volume; ROI region of interest; SAX short axis