This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiotherapy Pa 1, Subject name: Radiology
[{'content': 'Radioisotope study preferred for detection of parathyroid adenoma is? \nSelect and explain. \nA. I-131, B. Sestamibi scan, C. Thallium-201 scan, D. Tc 99m-MDP', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sestamibi Scan Is preferred isotope study used for Parathyroid Adenoma I-131 is used for Systemic Radiotherapy of Thyroid Cancers Thallium-201 scan is used for Myocardial Perfusion Tc99m-MDP/Medronate is used for Bone scan', 'role': 'assistant'}]