technetium
1
9.9
- noun
- /tɛkˈniːʃiəm/
- Specialized
- All forms of the element technetium are radioactive and have relatively short half-lives.
- technetium-99m
- scintigraphy with technetium
Examples
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Subject 1 showed evidence of paranasal sinus technetium deposition, and Subject 5 did not.
Academic text (1999) -
Moreover, the administration of a single dose of decongestant did not improve the deposition of the technetium.
Academic text (1999) -
The results of the technetium trial are shown in the table.
Academic text (1999) -
Only five of these subjects had a normal CT result, and they were included in the final technetium trial.
Academic text (1999) -
There are two elements for which there are no stable isotopes, Technetium and Promethean.
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Another useful feature is technetium's ability to bind chemically with many biomolecules.
Academic text (2006) -
The technetium isomer is probably the most widely used of all radioactive isotopes for medical diagnostics.
Academic text (2006) -
All 6 patients had evidence of bony erosion on computed tomography of the temporal bones, although 4 had negative findings on technetium-99m scintigraphy.
Academic text (2009) -
The peptide was radiolabelled with technetium-99m and injected intravenously to image malignant lesions in 26 women with primary, recurrent, or metastatic breast cancer.
Academic text (1995) -
The presence of technetium in the sample indicated a recent fission reaction.
Synonyms
1
9.9
A man-made silvery radioactive metal used in medical imaging
A metal that gives off radiation made when uranium splits and not found naturally
Surface Forms
Morphology
technetium = tech (semi-transparent) = technet + ium
The element name is formed by a combining form meaning 'artificial' plus the metal-forming suffix '-ium'; the components are visible to learners who know 'tech/techno' and '-ium', but the specific chemical meaning is technical and not fully deducible.
Etymology
Technetium comes from the Greek root techne, which means 'art' or 'skill' and is the same root behind familiar words like tech and technology. It was named because it was the first element produced by people rather than found in nature, so the name helps you remember it as an 'artificial' or human-made metal.