[The technology of preparation and experience in the clinical use of 252Cf sources]

The paper is concerned with analysis of technology, developed in our country for the manufacture and use of pin sources with linear and inhomogeneous (stepped) distribution of 252Cf and sources of flexible assemblies in interstitial radiotherapy of tumors. Clinical analysis contains 407 cases of therapy of head and neck tumors over the period of 1979-1987. In the authors' opinion, the most promising sources (with regard to the frequency of use) are pin sources with homogeneous radionuclide distribution and flexible assemblies.