Nasogastric Tube Placement on Point of Care Ultrasound - Longitudinal View The cervical esophagus is left of midline and can be seen on ultrasound. Great for confirming NG tubes, or identifying esophageal intubation. Look for the "double trachea" sign. Dr. Hailey Hobbs @haileyahobbs #Nasogastric #NGTube #Placement #clinical #video #pocus #ultrasound #esophagus #Long