system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The initial investigation of choice for a post cholecystectomy biliary stricture is
assistant
The correct answer is  Computed Tomography CT is probably the best initial study, the results which help direct fuher investigations A good quality CT scan shows a dilated biliary tree and helps localise the level of ductal obstruction in patients with strictures CT identities fluid collections or ascites, which may suggest the possibility of vascular damage Other Radiological investigations in post cholecystectomy bile duct injury Duplex ultrasonography Percutaneous transhepatic cholangiography Magnetic resonance cholangiopancreatography. ERCP Isotopic scanning techniques Aretriography and delayed phase poography Ref: Blumga 5th edition Pgno :627