Table 2
Accuracy of diagnostic tests for pulmonary embolism
Test
Sensitivity %
Specificity %
d-dimer
90–99
40–60
Ultrasound
35
99
Ventilation/perfusion lung scan
98
10
Spiral computed tomography
57–100
78–100
Magnetic resonance imaging
71–87
95–97
Pulmonary angiography
98
94–98