This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
The potential limitation of CECT in the setting of the acute pancreatitis is: 
Select and explain. 
A. Can not assess the severity, B. May not useful in assessing prognosis, C. Can not clearly diagnose gallstone pancreatitis, D. Can not diagnose peripancreatic fluid collection
C: Can not clearly diagnose gallstone pancreatitis
Answer: C: Can not clearly diagnose gallstone pancreatitis 
Explanation: MDCT is the primary imaging technique used in evaluating patients suspected of having acute pancreatitis CT useful for: Morphologic changes in the pancreas that allow confirmation of pancreatitis Assessment of the severity It is the only imaging study that predicts clinical outcome. A potential limitation of MDCT in assessing acute pancreatitis is that it has only moderate sensitivity for detecting gallstones and biliary stones. Ref: ACR Appropriateness Criteria,Acute Pancreatitis.