The uses and limitations of radiosotopes in the investigation of gastrointestinal diseases

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Abstract
Advances in the physical and biological sciences have in recent years led to a rapidly increasing use of radioactive agents in clinical medicine. The distinctive properties of these agents have made them invaluable for a large variety of uniquein vivo andin vitro diagnostic tests. In order to help the clinician employ such tests productively and realistically, we have attempted to review the present status of radioisotopes with regard to gastrointestinal diseases. Emphasis has been placed not only on their value but also on their limitations; the degree of safety forin vivo application has also been briefly considered.