This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ultrasonography, CT, and MRI, Subject name: Radiology
[{'content': 'Gyromagnetic property of proton is seen in - \nSelect and explain. \nA. MRI, B. CT, C. PET scan, D. USG', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., MRI o Ultrasonography is based on piezoelectric effect.o MRI is based on gyeromagnetic property of proton (H+)", 'role': 'assistant'}]