This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Radiology
[{'content': 'CECT is least useful as a diagnostic tool for: \nSelect and explain. \nA. Juvenile angiofibroma, B. Carotid body tumor, C. Glomus jugulare, D. Subclavian steal syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Subclavian steal syndromeThe better radiological tools for subclavian steal syndrome would be dynamic 3dtofmra and catheter angiography.CECT is not much of use in this case.', 'role': 'assistant'}]