Skip to main content

Advertisement

Table 3 Diagnostic performance based on unenhanced MDCT findings

From: Unenhanced multidetector computed tomography findings in acute central pulmonary embolism

Unenhanced MDCT Sensitivity (%) Specificity (%) PPV (%) NPV (%) PLR NLR AUC
High attenuation emboli in PA 71.9 (53.3, 86.3) 100 (89.1, 100) 100 (85.2, 100) 78.0 (62.4, 89.4) NE 0.28 0.859
Main PA dilatation > 33.2 mm 46.9 (29.1, 65.3) 90.6 (75.0, 98.0) 83.3 (58.6, 96.4) 63.0 (47.5, 76.8) 5.0 (3.4, 7.4) 0.6 (0.2, 1.8) 0.687
Peripheral wedge-shape consolidation 43.8 (26.4, 62.3) 78.1 (60.0, 90.7) 66.7 (43.0, 85.4) 58.1 (42.1, 73.0) 2.0 (1.3, 3.1) 0.7 (0.3, 1.5) 0.609
Number of positive findingsa 96.9 (83.8, 99.9) 71.9 (53.3, 86.3) 77.5 (61.5, 89.2) 95.8 (78.9, 99.9) 3.4 (2.7, 4.3) 0.04 (0.01, 0.3) 0.909
  1. AUC area under ROC curve, MDCT, multidector computed tomography, NE not estimated, PA pulmonary artery, PLR positive likelihood ratio, NLR negative likelihood ratio, PPV positive predictive value, NPV negative predictive value
  2. aThe optimal cut-of-point was ≥1