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': 'Which of the following is true regarding cardiac MRI \nSelect and explain. \nA. Infarcted myocardium is hypointense on T2-MRI, B. Viable myocardium can be differentiated from infarcted myocardium, C. Prosthetic hea valves are an absolute contraindication for MRI, D. It is better than CT for non-invasive assessment of coronary aeries', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Viable myocardium can be differentiated from infarcted myocardium.Infarcted myocardium appears hypointense on T1-MRI and hyperintense on T2-MRIViable myocardium can be easily differentiated from infarcted tissue.Prosthetic hea valves are a relative contraindications for MRI.Multislice CT is a better modality than cardiac MRI for the non invasive assessment of coronary aeries.", 'role': 'assistant'}]