所有的~(99)mTc发生器都含有几种放射性核素杂质,探测出这种核素的数量取决于检测方法的准确性。这些核素的活度和相对活度受生产该发生器方法的影响最为明显,但是同样的方法不同厂家生产的发庄器也有明显区别。从患者安全的角度看,只要洗脱液很纯净,发生器中即使有这些核素存在也无关紧要。本文,包括几篇有关处理洗脱液杂质的文章,也强调了洗脱液纯度的重要性。但是残存在发生器中的核素却一直未引起注意。虽然对残留在发生器中的短寿命核素的兴趣在不断增加,但是实际上它们的意义并不大。在处置旧的发生器时,长寿命核素仍然存在污染 All ~ (99) mTc generators contain several radionuclide impurities, and the amount of this nuclide detected depends on the accuracy of the assay. The activity and relative activity of these nuclides are most markedly affected by the methods used to produce the generator, but there are also significant differences between the methods used by different manufacturers. From a patient safety point of view, it does not matter if the generator has these nuclides, as long as the eluent is pure. This article, including several articles dealing with impurities in eluents, also highlights the importance of elution purity. However, the nuclide remaining in the generator has not drawn any attention. Although there is a growing interest in short-lived nuclides remaining in the generator, in practice they are not significant. Long-lived nuclides remain contaminated when disposing of older generators