The official discovery of element-43 is accorded to Emilio Segrè and co-workers. Technetium, as they called it, was the last of elements 1-92 to be tracked down, and in fact it had to be ...

Technetium-99m (99mTc) is used in approximately 85% of diagnostic imaging procedures in nuclear medicine worldwide. Interruptions in the supply of molybdenum (99Mo), which is used to produce 99mTc, ...