| sodium pertechnetate tc 99m | <chemical> A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, cardiovascular and cerebral circulation, brain, thyroid, and joints. Pharmacological action: radiopharmaceuticals. Chemical name: Technetate (99TcO41-), sodium, (T-4)- (12 Dec 1998) |
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| technetium | <radiology> Tc-99m, half-life: 6.03 hr, decay: isomeric transition, radiation: gamma, 140 keV (98%) (12 Dec 1998) |
| technetium-99 | A radioisotope of technetium which is the decay product of technetium-99m and has a weak beta emission and a physical half-life of 213,000 years. (05 Mar 2000) |
| technetium compounds | Inorganic compounds that contain technetium as an integral part of the molecule. (12 Dec 1998) |