Intracardiac scanning of the heart with the aid of ultrasonic intravenous probe.
D000293:Adolescent; D000328:Adult; D000818:Animals; D002648:Child; D004285:Dogs; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008722:Methods; D014465:Ultrasonics / Q000295:instrumentation