The measurement of systolic time intervals by echocardiography.
D004452:Echocardiography; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D010701:Phonocardiography