Ключевые слова: angina, angina pectoris, aorta, aortic, area, artery, atrium, blood, cardiac, cardio, cardiology, cavity, chamber, clinic, cusp, diagnosis, diagnostic, disease, doppler, echo, echocardiogram, echocardiography, effect, equipment, exam, examination, frequency, heart, hospital, illness, medicine, mitral, patient, pectoris, quantification, regurgitation, scan, segment, sonogram, sonography, stenosis, structure, tissue, ultrasonography, ultrasound, valve, valvular, vein, ventricle,