The use of a side-viewing duodenoscope in endoscopic retrograde cholangiopancreatography for biliary pancreatitis is shown. A wire-guided sphincterotome cuts the biliary sphincter with the use of electrocautery; this facilitates retrieval of a stone by sweeping the duct with a balloon.

See the NEJM article, "ERCP for Gallstone Pancreatitis": http://www.nejm.org/doi/full/10.1056/NEJMct1208450