[Possibility of pulmonary circulation study with nongaseous radioactive isotopes]

This paper deales with the applications of radionuclides to the study of human pulmonary circulation for better knowledge of some morphological and dinamic functional aspects. At this time the methods used are divided in three groups in respect to the purpose. - Methods for static investigations of pulmonary perfusion, by scintigraphy with radioalbum aggregates. - Methods for dynamic investigation, general radiocardiography and selective right radiocardiography with radioalbum macroaggregates. - Methods for morpho-functional investigation, especially Isotopoangiocardiopneumography using gamma-camera and Tc99mO4. Here are treated the fields of applications, the purpose and the limits of these methods, used in a large number of and acquired pulmonary vascular diseases.