This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nuclear medicine, Subject name: Radiology
Radioisotopes used in Myocardial perfusion imaging: Thallium 201 18 FDG PET Tc-99m Sestamibi Tc-99m Pyrophosphate Tetrafosmin N-13 Ammonium 
Select and explain. 
A. 1,3,4,5, B. 1,2,3,4,5,6, C. 1,3,5,6, D. 1,3,4,5,6
B: 1,2,3,4,5,6
Answer: B: 1,2,3,4,5,6 
Explanation: - Thallium-201, Sestamibi, Tetrofosmin scan are used for Myocardial Perfusion Imaging. - Pyrophosphate scan for Myocardial Infarction. - 18 FDG PET is used to detect Myocardial Viability - N-13ammoniaPETmyocardial perfusion imaging(MPI) yields larger stressperfusiondefects than dipyridamole stress and might reflect the truemyocardialischemic burden.