Fig 1. Common lung ultrasound patterns.

(A) ‘A-lines’ are reverberation artefacts of the pleura line present in normally aerated lung tissue; they are indicated by the arrows. (B) ‘B-patterns’ are pathological signs of extravascular lung water. Here, multiple coalescent B-lines are shown between the indicator arrows, extending to the lower end of the screen. (C) ‘C-patterns’ are characteristic for pulmonary consolidation suggesting pneumonia. Here, an interruption of the normal pleural line is shown, with multiple echogenic punctiform laesions (as indicated by the arrows) and an underlying air bronchogram.