Production par cyclotron d'oxygène 15, d'azote 13 et de carbone 11, en vue d'applications biomédicales

The production and the medical use of the short-lived radioisotopes of the three principal elements in the biosphre, 13 nitrogen, 15 oxygen and 11 carbon, require the vicinity of a cyclotron, of radiochemistry laboratories and of a suitelly equipped medical unit. The fundamental scientist and the physician must work on a mutual comprehsnive basis. This article describes the methodological and pratical aspects of the production by cyclotron of the gases discusses the specifications that result from their medical application