Fig. 2.

Lung ultrasound images with different scores. Note: The white arrow is the A line; the blue arrow is the B line; the red arrow is the gathering B line; yellow arrows are subpleural nodules; the green arrow is the discontinuous pleura. The above figure shows the ultrasound images of the patients with different scores. Figure A: normal pleura and A line, rated as 0; Figure B: Discontinuous pleura and multiple B lines, rated as 1 point; Figure C: Several gathered B lines, rated as 2 points; Figure D: Subpleural consolidation with diameter > 2 cm, rated as 3 points