This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'A hemodynamically stable patient with blunt abdominal trauma, the best investigation is ? \nSelect and explain. \nA. CECT abdomen, B. MRI abdomen, C. DPL, D. FAST', 'role': 'user'}, {'content': "Answer: A \nExplanation: CT Scan of Abdomen: It is most commonly used and better investigation for abdominal trauma. It is useful in blunt/penetrating trauma, suspected pancreas, spleen, liver, duodenal, retroperitoneal injuries. Smaller injuries, early haemoperitoneum are better detected. It is noninvasive, highly specifi c, highly accurate (96%), with low false-positive/low false-negative, noninvasive. Diagnostic Peritoneal Lavage (DPL) (by Perry) It is useful in blunt injury abdomen. It is not very useful in penetrating injury, bowel injury, retroperitoneal and pelvic injuries. Focused abdominal sonar trauma (FAST): It is rapid, noninvasive, poable bedside method of investigation focusing on pericardium, splenic, hepatic and pelvic areas. It is not reliable for bowel or penetrating injuries. It often needs to be repeated. SRB's Manual of Surgery, 4th Edition, pg. no. 150", 'role': 'assistant'}]