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Table 3 Comparison between the Simpson’s method vs. Biplane method using MTT and Manual (n = 29)

From: Left atrial structure and functional quantitation using cardiovascular magnetic resonance and multimodality tissue tracking: validation and reproducibility assessment

Manual Biplane Simpson’s P r P
Vmax (ml) 84.3 ± 34.6 88.1 ± 35.2 0.08 0.95 <0.001
LAEF 0.44 ± 0.1 0.34 ± 0.1 <0.001 0.88 <0.001
LAPEF 0.21 ± 0.22 0.17 ± 0.23 <0.001 0.70 <0.001
LAAEF 0.36 ± 0.08 0.28 ± 0.07 <0.001 0.70 <0.001
MTT Biplane Simpson’s P r P
Vmax (ml) 86.5 ± 33.6 85.2 ± 35.2 0.53 0.95 <0.001
LAEF 0.46 ± 0.1 0.33 ± 0.10 <0.001 0.85 <0.001
LAPEF 0.22 ± 0.21 0.16 ± 0.23 <0.001 0.57 0.002
LAAEF 0.38 ± 0.09 0.27 ± 0.06 <0.001 0.61 <0.001
  1. Results are reported as mean ± standard deviation
  2. Abbreviations: Vmax left atrial maximal volume, LAEF left atrial total ejection fraction, LAPEF left atrial passive ejection fraction, LAAEF left atrial active ejection fraction, r Pearson coefficient