Thanks to the untiring efforts of Dr. Yoshio Nishina Japan started importing radioisotopes from the U.S. in 1950 for the sake of contributing to progress in science and technology and to promotion of industry and the economy
Since then radioisotopes came to be used in a wider range of areas, and the quantity used also increased rapidly.
Under such circumstances it became necessary to have an organization to undertake collective import and subsequent distribution among users and to develop other activities for the convenience of users, such as technical training for safe use and information exchange among users.
That being the case, The Japan Radioisotope Association was established in 1951 as an organization of radioisotope users and research workers.
In 1954 it was reorganized to its present status of an incorporated association
1951:Founding of the "Nihon Hoshasei Doigenso Association" as a "voluntary collectivity" on May 1
Holding of the first radioisotope training course
Commencement of import and distribution of radioisotopes
1953:Commencement of import of large radiation sources for medicine
1954:Reorganization to incorporated association (May 1)
1960:Commencement of distribution of radiopharmaceuticals Commencement of collection of radioactive wastes
1964:Holding of the first meeting on radioisotopes in the physical Sciences and Industries
1967:Opening of Osaka office
1971:Change of the name to "Japan Radioisotope Association" (Aug. 1)
1981:Completion of the irradiation facility "Koka Laboratory"
1987:Completion of the medical radioisotope waste treatment facility "Kaya Memorial Takizawa Laboratory"
1989:Completion of the exhibition facility "Takemi Memorial Medical Library"
1990:Completion of the positron nuclear medicine and PIXE analysis facility "Nishina Memorial Cyclotron Center"