Fig. 4
From: Novel role of focused airway ultrasound in early airway assessment of suspected laryngeal trauma
a Normal sonoanatomy in longitudinal scan showing continuous and intact air–mucosal interface (arrowhead) in relation to thyroid and cricoid cartilage. b Airway ultrasound image in longitudinal scan showing disruption of the air–mucosal interface (arrowhead) and formation of endolaryngeal hematoma and fracture cricoid cartilage (box). TC: thyroid cartilage; CC: cricoid cartilage