Retrospective Study
Copyright ©The Author(s) 2023.
World J Gastrointest Endosc. Dec 16, 2023; 15(12): 699-704
Published online Dec 16, 2023. doi: 10.4253/wjge.v15.i12.699
Figure 1
Figure 1 Using ultrasound to scan the direction of the proximal colon to assist in inserting the endoscope. A: The direction of the proximal colon is at an acute angle; B: The direction of the proximal colon is almost at a right angle; C: The direction of the proximal colon is almost at an obtuse angle.