title: Human left main coronary artery blood flow: noninvasive Doppler echocardiography with sample volume tracking.
mesh_terms: D003326:Coronary Circulation; D003331:Coronary Vessels / Q000502:physiology* / Q000503:physiopathology; D004452:Echocardiography / Q000379:methods*; D006801:Humans; D012039:Regional Blood Flow