Fig. 1

Longitudinal scans of an intercostal space. (A) The pleural line (red arrow) is visualized between the ribs; reverberation artifacts beneath the pleura (A-lines– white arrows) indicate normal aeration and rule out cardiogenic edema. (B) 3 B-lines are visualized: vertical artifacts deriving from the pleura, reaching the bottom of the screen while erasing the A-lines: this B-pattern supports the diagnosis of a cardiogenic edema as the cause of acute dyspnea