Sometimes bile duct cannulation requires orientation of the cannula in a cephalad direction. This can be accomplished by using a sphincterotome. Tightening the cutting wire bows the cannula upward and produces a more cephalad orientation for the tip of th
The proper cannulation angle for the pancreatic duct is nearly at right angles to the duodenal wall, while bile cannulation requires a more cephalad orientation.
View of the ampulla through a duodenoscope. Cannulation requires positioning the catheter at a 6 oâclock location.
Cannulation of ampulla of Vater.