Lung Point Sign in Ultrasound Diagnostics of Pneumothorax: Imitations and Variants

Figure 1

Lung point sign. (a) B-mode, linear probe. The vertical arrow indicates the lung point. On the left, pleural sliding is present and terminated by one Z line. On the right, pleural sliding is absent. (b) M-mode, linear probe. Arrows indicate the alternating seashore sign and barcode sign during respiration. A video loop is available as Supplementary File 1.

(a)

(b)