Fig. 1From: Evaluation of ultrasound-guided Freka-Trelumina enteral nutrition tube placement in the treatment of acute pancreatitisFreka-Trelumina tube with the guide wire (presenting as a linear hyperecho) entering the duodenum through the antral pylorus. When the catheter depth reaches 75 cm, ultrasound should demonstrate that the Freka-Trelumina tube with the guide wire (presenting as a linear hyperecho) has entered the duodenum (white arrow) through the antral pylorus (black arrows). Gn, gallbladder neckBack to article page