Favourable Experience with M-Mode Sonography in the Diagnosis of Pneumothorax in Two Patients with Thoracic Subcutaneous Emphysema

Figure 1

Case 1: B-mode and M-mode sonography using a linear transducer positioned in the mid-clavicular line at the 3rd left intercostal space. Arrows indicate the pleural lines (B: B-mode, M: M-mode).