title: A mathematical model for the quantitative study of left to right cardiac shunt.
abstract: Non-invasive radioisotope cardiographic techniques have become a useful tool for studying the anatomy and function of the heart. The mathematical model described justifies the phenomenological analysis of pulmonary time-activity histograms and was invented for quantitative study of left to right cardiac shunt. The model also gives a theoretical insight into such an empirically proposed diagnostic method and represents an adequate framework for the understanding of other possible approaches to the problem of left to right shunt.
mesh_terms: D001775:Blood Circulation; D001980:Bronchi / Q000098:blood supply; D003326:Coronary Circulation; D006343:Heart Septal Defects / Q000175:diagnosis*; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D011652:Pulmonary Circulation; D011868:Radioisotopes
chemical_list: D011868:Radioisotopes