Fig. 1From: Rapid positioning of nasogastric tube by ultrasound in COVID-19 patientsMale, 52 years old, with the chief complain “cough for 1 week and chest distress for 2 days.” A gastric tube was put. a Ultrasound showed the stomach (white arrow) and the liver (white star). b And then 20 ml of air was injected through the NGT; ultrasound showed dynamic hyperechogenic air shadow in the stomach (white triangle)Back to article page