COVID-19 infection on lung US. A, Anteroposterior chest radiograph, B, axial chest CT image, and C, lung US image from the same 74-year-old man, who tested positive for COVID-19 5 days prior to imaging. The chest radiograph shows bilateral peripheral opacity, which presents with a ground-glass appearance on the chest CT image. Lung US imaging in this patient demonstrated numerous B-lines throughout the parenchyma which were diffusely confluent in some sections. These are better seen in a cine clip (Movie 9). A small consolidation in a patient with COVID-19 is shown in Movie 10.