| For many years technetium was an insignificant part of the cost of a ready pharmaceutical. |
| All forms of the element technetium are radioactive and have relatively short half-lives. |
| The way you handle thallium, for example, is different from the way you handle technetium, so management is not as easy as with the technetium. |
| Those that do not, such as technetium and americium, have been substituted, respectively, by rhenium and neodymium, which have similar traits. |
| So we need either our technetium compounds restored in a way that we can count on them, or we need to go into PET imaging to a greater degree. |
| They break uranium atoms, which are heavy, into lighter so-called fission products, such as technetium. |
