Fig. 1From: The “pandemic” increase in lung ultrasound use in response to Covid-19: can we complement computed tomography findings? A narrative reviewAnterior parasagittal lung ultrasound scan of the thorax. The parietal and visceral pleura appear as a hyperechoic line with sliding movements (also see Additional file 1: Clip S1). A lines are thought to be mirror artifacts from the near-total ultrasound reflection by the pleura-alveolar gas interfaceBack to article page