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
A patient complains of epigastric pain, radiating to back off and on. The investigation of choice is –
assistant
The correct answer is  Epigastric pain radiating to back suggests the diagnosis of acute pancreatitis. CECT is the investigation of choice for pancreatitis.