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Table 1 Comparison between the Simpson's method vs. Biplane method, Manual vs. MTT

From: Left atrial structure and functional quantitation using cardiac magnetic resonance: comparison of manual delineation vs. multimodality tissue tracking based semi-automated methods

  Biplane Simpson's p r p
Manual      
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 (%) 0.16 ± 0.08 0.11 ± 0.05 < 0.001 0.70 < 0.001
LAAEF(%) 0.37 ± 0.07 0.28 ± 0.07 < 0.001 0.70 < 0.001
MTT      
Vmax (ml) 86.5 ± 33.6 85.2 ± 35.2 0.53 0.95 < 0.001
LAEF (%) 0.46 ± 0.2 0.33 ± 0.10 < 0.001 0.85 < 0.001
LAPEF (%) 0.18 ± 0.05 0.11 ± 0.04 < 0.001 0.57 0.002
LAAEF(%) 0.38 ± 0.08 0.27 ± 0.06 < 0.001 0.61 < 0.001
  MTT Manual p r p
Biplane      
Vmax (ml) 86.5 ± 33 84.4 ± 34 0.08 0.98 < 0.001
LAEF (%) 0.45 ± 0.13 0.44 ± 0.12 0.21 0.88 < 0.001
LAPEF (%) 0.17 ± 0.05 0.16 ± 0.08 0.67 0.57 0.002
LAAEF(%) 0.16 ± 0.08 0.36 ± 0.09 0.21 0.83 < 0.001
Simpson's      
Vmax (ml) 85.2 ± 35.2 88.2 ± 35.2 < 0.001 1.00 < 0.001
LAEF (%) 0.33 ± 0.1 0.34 ± 0.1 0.19 0.92 < 0.001
LAPEF (%) 0.11 ± 0.04 0.11 ± 0.05 0.43 0.29 0.14
LAAEF(%) 0.27 ± 0.06 0.28 ± 0.06 0.52 0.86 < 0.001
  1. Results are reported as mean ± standard deviation. Abbreviations: Vmax; maximal volume; LAEF, left atrial total ejection fraction; LAPEF, left atrial passive ejection fraction; LAAEF, left atrial active ejection fraction; Smax, maximal global strain (a longitudinal strain vs. b circumferential strain); r, Pearson's correlation.