Canadian Medical Guide > Chemicals and Drugs > Inorganic Chemicals > Elements > Elements, Radioactive > Technetium Terms and Definitions

Technetium

Medical Definition:	The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.
Guide Notes:	note X ref: many specific Technetium Tc 99m terms are available
Also Called:	Technetium 99m
CAS Type 1 Name:	CAS Number:	7440-26-8

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