CT and ultrasonographic features of COVID-19 pneumonia

Lung CT:

 - Thickened pleura

 - Ground glass shadow and effusion

 - Pulmonary infiltrating shadow

 - Subpleural consolidation

 - Translobar consolidation

 - Pleural effusion is rare.

 - More than two lobes affected

 - Negative or atypical in lung CT images in the super-early stage, then diffuse scattered or ground glass shadow with the progress of the disease, further lung consolidation



Lung ultrasound

 - Thickened pleural line

 - B lines (multifocal, discrete, or confluent)

 - Confluent B lines

 - Small (centomeric) consolidations)

 - Both non-translobar and translobar consolidation

 - Pleural effusion is rare

 - Multilobar distribution of abnormalities

 - Focal B lines is the main feature in the early stage and in mild infection; alveolar interstitial syndrome is the main feature in the progressive stage and in critically ill patients; A lines can be found in the convalescence; pleural line thickening with uneven B lines can be seen in patients with pulmonary fibrosis



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