title: Non-invasive assessment of changes in pulmonary artery blood flow by transcutaneous ultrasonic Doppler technique in normal children.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001783:Blood Flow Velocity; D001824:Body Constitution; D002648:Child; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000502:physiology*; D012039:Regional Blood Flow; D012212:Rheology; D014463:Ultrasonography / Q000379:methods