This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiac and Pericardiac Imaging, Subject name: Radiology
[{'content': 'Trans-esophageal echocardiography is better than transthoracic Echocardiography because of better evaluation of? \nSelect and explain. \nA. Diastolic dysfunction, B. Left ventricular hypertrophy, C. Systolic function, D. Left atrial appendage clots', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Left atrial appendage clots\\Ref.: Harrison 19th ed. I270e~2T.E.E. is preferred over the routine Trans-thoracic echocar- diography for the following situations:* Internal heart structures and path of blood flow in congenital heart disease* To evaluate the effects of surgical intervention to the heart, such as repair of congenital heart defects.* When echo is indicated, but other circumstances (i.e., pulmonary disease) that may interfere with the ability to obtain adequate images are present, a TEE may be more appropriate.* Mitral valve diseases* Blood clots or masses inside the heart* Aortic Dissection* Implanted prosthetic heart valves may be better visualized and assessed with T.E.E.* To evaluate for blood clots in the heart prior to cardioversion or ablation procedures.', 'role': 'assistant'}]