MR cholangiopancreatography combined with hepatobiliary contrast-enhanced MR imaging is a useful approach that provides comprehensive information about the biliary system and can detect biliary leak and differentiate it from other post-operative complications.

From the manuscript

Bile leak after elective laparoscopic cholecystectomy: Role of MR imaging

Abstract
Increasing hepatobiliary laparoscopic surgeries have lead to a rise in injury to the biliary tree and other complications like bile leak. Ultrasonography (US) and computed tomography (CT) cannot reliably distinguish bile from other postoperative fluid collections. Magnetic resonance (MR) imaging with hepatobiliary agents and MR cholangiopancreatography provide anatomic and functional information that allows for prompt diagnosis and excludes any other concomitant complications. We report a case of post-cholecystectomy bile leak in a 42-year-old female who presented with persistent dull abdominal pain after the intervention; we emphasize the role of MR imaging in achieving the correct diagnosis.