title: THE SPREAD TO APPEARANCE TIME RATIO IN THE ESTIMATION OF LEFT-TO-RIGHT SHUNTS.
mesh_terms: D000293:Adolescent; D001775:Blood Circulation; D002648:Child; D004373:Ductus Arteriosus; D004374:Ductus Arteriosus, Patent; D004395:Dye Dilution Technique; D006325:Heart Atria; D006343:Heart Septal Defects; D006344:Heart Septal Defects, Atrial; D006345:Heart Septal Defects, Ventricular; D006801:Humans; D007223:Infant; D011651:Pulmonary Artery; D013223:Statistics as Topic
keywords: ADOLESCENCE; BLOOD CIRCULATION; CHILD; DUCTUS ARTERIOSUS, PATENT; DYE DILUTION TECHNIC; HEART SEPTAL DEFECTS, ATRIAL; HEART SEPTAL DEFECTS, VENTRICULAR; INFANT; PULMONARY ARTERY; STATISTICS