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Chest CT: Sensitivity and Specificity

Introduction: None written. Excerpt from the entry in Emphysema:
Study population: patients with CT, CXR, and PFTs done within a short timespan (virtually all smokers). Standard was decreased diffusion capacity and airway obstruction by PFTs. Note that these findings were also found in 69% of patients in this study with normal PFTs.

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Associated Diagnoses:


96% sensitive

Exudative Pleural Effusion

59% sensitive, 64% specific


44% sensitive, 98% specific


94% sensitive, 65% specific

Acute Pericarditis

54% sensitive, 91% specific

Aortic Dissection

100% sensitive, 98% specific