Skip to main content

Table 2 Inter- and intra-observer variability for measurement of EF with each technique

From: Accuracy and reproducibility of geometric models for assessment of left ventricular ejection faction using cardiovascular magnetic resonance

  Reference Triplane Biplane Monoplane Hemiellipse Mod Simps Teichholz
INTER-OBSERVER        
Mean difference +SD (%) 0.4 + 2 1.0 ± 7 -0.2 ± 7 -0.4 ± 7 3.4 ± 6 1.1 ± 6 4.2 ± 7
Correlation coefficient (r) 0.97 0.91 0.90 0.88 0.93 0.90 0.93
Bland-Altman 95% limits of agreement (%) -4 to 4 -12 to 14 -15 to 14 -14 to 14 -9 to 16 -12 to 14 -9 to 18
Bland-Altman range (%) 8 26 29 28 25 26 27
INTRA-OBSERVER        
Mean difference +SD (%) 0.8 ± 2 -0.8 ± 4 -1.9 ± 4 -2.2 ± 6 0.2 ± 4.5 -0.7 ± 4 -1.5 ± 4
Correlation coefficient (r) 0.98 0.97 0.97 0.92 0.97 0.96 0.97
Bland-Altman 95% limits of agreement (%) -3 to 4 -9 to 8 -11 to 7 -14 to 10 -9 to 9 -9 to 7 -10 to 7
Bland-Altman range (%) 7 17 18 24 18 16 17