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': 'Iopanoic acid is used in - \nSelect and explain. \nA. Myelography, B. Bronchography, C. Hysterosalpingography, D. Cholecystography', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Iopanoic acid : iodine containing contrast agent Hepatic excretion potent inhibitor of thyroid hormone release and also peripheral conversion. used in cholecystography and also in hypehyroidism as adjuvant therapy', 'role': 'assistant'}]