technetium /tech·ne·ti·um/ (tek-ne´she-um) chemical element, at. no. 43, symbol Tc.
Technetium
technetium (Tc)
technetium 99m the most frequently used radioisotope in nuclear medicine, a gamma emitter (0.141 MeV) having a half-life of 6.01 hours.
tech·ne·ti·um (t k-n  sh- m, -shm)n. Symbol Tc A radioactive metal, the first synthetically produced element, used as a tracer and in diagnostic imaging. Atomic number 43. |
Technetium
A radioactive isotope frequently used in radionuclide scanning of the heart and other organs. It is produced during nuclear fission reactions.
technetium (Tc)
Etymology: Gk, technectos, artificial
a radioactive, metallic element. Its atomic number is 43, and its atomic mass is 99. The first synthetic element, technetium also occurs in nature. Isotopes of technetium are used in radioisotope scanning procedures of internal organs such as the liver and spleen.
technetium
a chemical element, atomic number 43, atomic weight 99, symbol Tc. See Table 6.
technetium-99m
the most frequently used radioisotope in nuclear medicine, a gamma emitter having a half-life of 6.04 hours and a primary photon energy of 140 keV; symbol 99mTc.
99m
Tc sulfur coated scintiscan see scintiscan.
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