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': 'In Radionuclide imaging, the most useful radio-pharmaceutical for skeletal imaging is: March 2011 \nSelect and explain. \nA. Gallium-67, B. Technetium-sulphur-colloid, C. Technetium-99m, D. Technetium-99m linked to Methylene diphosphonate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Technetium-99m linked to Methylene diphosphonate Applications of Tc-99m includes bone imaging (99m Tc tagged phosphorous compounds) Scans used for: Hot spot in MI: Technetium scan Pancreatic scanning: Selenium 75 Parathyroids: Sestamibi scan Renal GFR estimation: Tc 99DTPA scan Vesicourethral reflex: MAG3 Tc 99 scan Thyroid scan: 1-131', 'role': 'assistant'}]