title: Use of a range-gated, pulsed ultrasonic doppler technique for continuous measurement of velocity of the posterior heart wall.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004452:Echocardiography; D004562:Electrocardiography; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D007702:Kinetocardiography; D008722:Methods; D008875:Middle Aged; D010701:Phonocardiography; D005082:Physical Exertion; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography; D016276:Ventricular Function