Fig. 1From: Management of pneumothorax with 8.3-French Pigtail Catheter: description of the ultrasound-guided technique and case seriesA Evaluation of the presence of pneumothorax with a high-frequency linear transducer (13 MHz) B. Pneumothorax was diagnosed due to the absence of pleural sliding (arrow) and the barcode sign in M-mode C. Chest radiograph confirming the presence of pneumothorax (arrow)Back to article page