Disease progression mostly occurs in course of 7-10 days, with enlarged and increased density of GGO, and consolidated lessions with air bronchogram sign. GGOs from the early stage expand, and the density increases gradually. Consolidation shows increased lung parenchimal density, and blurred borders of the pulmonary blood vessels and air way walls due to the loss of air contrast.
Imaging of coronavirus disease 2019 part 15
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