Ruthenium belongs to the platinum group metals (PGMs) which include palladium (Pd), platinum (Pt), osmium (Os), iridium (Ir) and rhodium (Rh). Radioactive isotopes of ruthenium are important elements related to the nuclear field. Ruthenium is one of the fission products in nuclear reactors and one of the troublesome nuclide in reprocessing process of the spent nuclear fuel (PUREX). The increased concentration of ruthenium-106 in the environment can be the result of accidents in nuclear power plants, spent nuclear fuel processing plants, or of nuclear tests. On the other hand, radioisotope of ruthenium Ru-106 is a drug that is successfully used in brachytherapy. In this paper we describe both sides of this element.

钌属于铂族金属（PGM），包括钯（Pd），铂（Pt），（Os），铱（Ir）和铑（Rh）。钌的放射性同位素是与核领域有关的重要元素。钌是核反应堆中的裂变产物之一，也是乏核燃料（PUREX）后处理中麻烦的核素之一。环境中钌106浓度的增加可能是核电厂，乏核燃料加工厂或核试验中发生事故的结果。另一方面，钌Ru-106的放射性同位素是在近距离放射治疗中成功使用的药物。在本文中，我们描述了该元素的两面。