This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamentals In Radiology, Subject name: Radiology
[{'content': 'Walls of CT scan rooms are coated with- \nSelect and explain. \nA. Lead, B. Glass, C. Tungsten, D. Iron', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Lead * Lead is the most common agent used in modern constructions (Room design) to offer radiation shielding.* Computed tomography is a special type of x-ray procedure. A1 the precautions are same as X-rays.", 'role': 'assistant'}]