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
[{'content': 'IOC for mesial temporal sclerosis is \nSelect and explain. \nA. CECT, B. MRI, C. PETCT, D. USG', 'role': 'user'}, {'content': 'Answer: C \nExplanation: MRI is the IOC.\nFeature :\n\nHippocampal atrophy.\nAtrophy of ipsilateral mammillary body, fornix.', 'role': 'assistant'}]