[Operating mock-up of a scintillation gamma chamber].

An operating model constructed by using devices, components and materials batch manufactured by the Soviet industry has been designed. The basic parameters of the model lie within the bounds corresponding to the most widely used types of the foreign-made gamma-chambers. The phanthom tests set up on the model and clinical investigations of the thyroid, as well as trial tests with point and linear technetium-99m sources showed the device to perform satisfactorily.