Figure 1. Lung Ultrasound Findings of Consolidations and B-Lines.

The degree of B-lines was divided into 4 grades as follows: B0, fewer than 3 isolated B-lines; B1, multiple well-defined B-lines; B2, multiple coalescent B-lines; and B3, white lung. The degree of consolidation was divided into 4 grades as follows: C0, no consolidation; C1, minimal juxtapleural consolidations; C2, small-sized consolidations; and C3, large-sized consolidations. Arrowheads indicate pathologic findings.