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': 'The most recent advance in noninvasive cardiac output monitoring is use of: \nSelect and explain. \nA. PA catheter, B. Thermodilution technique, C. Echocardiography, D. Electrical impedance cardiography technology', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Electrical impedance cardiograph technology- PA catheter & thermodilution technique are invasive procedure.- Echo is noninvasive old technique to measure cardiac output- Recent noninvasive advance to measure C.O. is electrical impedance Cardiographs technology.', 'role': 'assistant'}]