[Radionuclide technique for diagnosing the mononuclear phagocytic system]

The purpose of the investigation was to determine the possibility of using colloidal radiopharmaceuticals to study the mononuclear phagocytic system in the clinical setting. The technique for studying the mononuclear phagocytic system using the labeled compounds involved the single intravenous administration of a radiolabeled colloidal solution, the registration and plotting of a change in colloid radioactivity, and the determination of radioactivity of the body as a whole and that of the lung, liver, spleen, and peritoneum. The performed investigation using colloidal radiopharmaceuticals makes it possible to study the mononuclear phagocytic system and to reveal the regularities of colloid accumulation in the organs and tissues in various diseases just in the clinical setting.