This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intestinal obstruction, Subject name: Surgery
[{'content': 'Type of Mesenteric ischemia best visualized by CECT: \nSelect and explain. \nA. Mesenteric ischemia by embolic occlusion, B. Acute mesenteric aery thrombosis, C. Non-occlusive mesenteric ischemia, D. Acute mesenteric venous thrombosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Acute mesenteric venous thrombosis is best visualized by CECT .', 'role': 'assistant'}]