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Table 4 Diagnostic accuracy of CTR = 51% for detecting abnormal cardiac MRI parameters by Receiver operating characteristic analysis

From: Limitations of cardiothoracic ratio derived from chest radiographs to predict real heart size: comparison with magnetic resonance imaging

MRI parameter AUC Sensitivity, % Specificity, % False-negative, % False-positive, %
LVEDVi 0.704 [0.646–0.761] 53.4 (79/148) 77.6 (125/161) 46.6 (69/148) 22.4 (36/161)
LVEF 0.669 [0.607–0.731] 44.6 (91/204) 77.1 (81/105) 55.4 (113/204) 22.9 (24/105)
Indexed LVmass 0.665 [0.590–0.739] 57.1 (40/70) 68.6 (164/239) 42.9 (30/70) 31.4 (75/239)
RVEDVi 0.719 [0.640–0.798] 67.9 (36/53) 69.1 (177/256) 32.1 (17/53) 30.9 (79/256)
RVEF 0.657 [0.590–0.723] 52.7 (58/109) 71.4 (142/200) 47.3 (52/109) 28.6 (57/200)
  1. Values in parentheses are the numbers for percentage calculation. Values in brackets are 95% confidence intervals. MRI magnetic resonance imaging, AUC area under the curve, LVEDVi left ventricular indexed end-diastolic volume, LVEF left ventricular ejection fraction, LV left ventricle, RVEDVi right ventricular indexed end-diastolic volume, RVEF right ventricular ejection fraction