How do we diagnose COVID-19?
Chest x-ray is not used to diagnose people with COVID-19 but is almost always used for people with respiratory symptoms. The classic findings of bilateral lower lung alveolar infiltrates without effusions can represent COVID-19 but can be seen in other lung diseases as well.
Computed Tomography (CT)
CT is also not used to diagnose COVID-19 directly but is much more specific than a chest x-ray. The classic findings are bilateral lower lung predominant ground-glass infiltrates without effusions. Some of the infiltrates may have central lucency. This appearance is relatively specific for COVID-19 respiratory infections.