title: Theory of quantitative determination of intracardiac shunts by external detection.
mesh_terms: D000328:Adult; D001775:Blood Circulation; D001783:Blood Flow Velocity; D002302:Cardiac Output; D003936:Diagnosis, Computer-Assisted; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D011652:Pulmonary Circulation; D011865:Radioisotope Dilution Technique; D013997:Time Factors