Comparison of pressures in the pancreatic and common duct segments of the sphincter of Oddi

Sphincter of Oddi manometry. Comparison of the sphincter of Oddi (SO) pressures obtained from both the pancreatic segment (PD) and common duct (CBD) segment of the SO during catheter pull-through of the sphincter in the same patient. The pressures are equivalent. (BM refers to "black marks" noted on the catheter.)