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Table 1 Patient characteristics for Derivation and Validation groups

From: Extracellular volume fraction measurements derived from the longitudinal relaxation of blood-based synthetic hematocrit may lead to clinical errors in 3 T cardiovascular magnetic resonance

  Derivation (n = 121) Validation (n = 105) P value
Age, years 49.8 ± 12.4 50.8 ± 13.0 0.554
Male, n (%) 66 (54.6) 65 (61.9) 0.264
BSA, m2 1.70 ± 0.22 1.72 ± 0.17 0.266
Healthy volunteer 18 27  
Type 2 diabetes mellitus 34 26  
Hypertrophic cardiomyopathy 49 44  
Others 20 8  
EDVi, ml/m2 71.0 ± 26.3 71.1 ± 25.6 0.968
ESVi, ml/m2 32.5 ± 26.5 30.8 ± 25.7 0.629
SVi, ml/m2 38.5 ± 8.8 40.3 ± 8.5 0.120
EF, % 56.9 ± 11.3 58.9 ± 10.0 0.174
CI, L/min/m2 2.82 ± 0.77 2.95 ± 0.62 0.159
LVMi, g/m2 80.8 ± 40.6 77.4 ± 34.3 0.506
Hematocrit, % 40.4 ± 4.7 40.9 ± 5.1 0.386
Myocardial native T1, ms 1285 ± 859 12,657 ± 75 0.055
Myocardial post-contrast T1, ms 504 ± 78 514 ± 54 0.273
Blood native T1, ms 1846 ± 120 1827 ± 130 0.242
Blood post-contrast T1, ms 343 ± 78 345 ± 54 0.883
ECV, % 30.3 ± 6.3 29.0 ± 4.2 0.059
  1. BSA body surface area, EDVi end-diastolic volume index, ESVi end-systolic volume index, SVi stoke volume index, EF ejection fraction, CI cardiac index, LVMi left ventricular mass index, ECV extracellular volume