Technetium. Medical search. FAQ

Technetium-99m (99mTc) is used in approximately 85% of diagnostic imaging procedures in nuclear medicine worldwide. (iaea.org)
99mTc teboroxime, another promising new perfusion agent, is a boronic acid adduct of technetium dioxime complexes. (biomedsearch.com)

I was slated to take a 'nuclear stress test' with cardiolite (Technetium Tc99m Sestamibi) but grew concerned when they recommened not holding a small child for 24 hours. (medhelp.org)
Technical aspects of myocardial SPECT imaging with technetium-99m sestamibi. (nih.gov)
(nih.gov)
Technetium 99m sestamibi in the assessment of chronic coronary artery disease. (biomedsearch.com)

Following intravenous injection, single photon emission computed tomography (SPECT) is performed to detect the gamma ray emmitted by the decay of Technetium-99m to Technetium-99. (drugbank.ca)
Technetium Tc 99m mertiatide injection is used to help your doctor see an image of your kidneys to see how well they are working. (drugs.com)
Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of technetium Tc 99m mertiatide injection in children. (drugs.com)
No information is available on the relationship of age to the effects of technetium Tc 99m mertiatide injection in geriatric patients. (drugs.com)

Technetium ( 99m Tc) sulesomab (trade name LeukoScan ) is a mouse monoclonal antibody labelled with technetium-99m , a radionuclide , for imaging with a gamma camera . (wikipedia.org)
Technetium ( 99m Tc) fanolesomab (trade name NeutroSpec , manufactured by Palatin Technologies) is a mouse monoclonal antibody formerly used to aid in the diagnosis of appendicitis . (thefullwiki.org)
It consisted of an intact murine (mouse) IgM monoclonal antibody against human CD15 , labeled with technetium-99m so as to be visible on a gamma camera image. (thefullwiki.org)

Naturally occurring technetium is a spontaneous fission product in uranium ore and thorium ore, the most common source, or the product of neutron capture in molybdenum ores. (wikipedia.org)
Technetium-99 has a fission product yield of 6.0507% for thermal neutron fission of uranium-235 . (wikipedia.org)
Technetium is the only element below uranium that does not exist on Earth . (encyclopedia.com)
Most technetium produced on Earth is a by-product of fission of uranium-235 in nuclear reactors and is extracted from nuclear fuel rods. (newworldencyclopedia.org)
Since technetium is unstable, only minute traces occur naturally in the Earth 's crust as a spontaneous fission product of uranium . (newworldencyclopedia.org)
In 1999 David Curtis (see above) estimated that a kilogram of uranium contains 1 nanogram (1×10 −9 g) of technetium. (newworldencyclopedia.org)
The fission of a gram of the rare isotope uranium-235 in nuclear reactors yields 27 mg of 99 Tc, giving technetium a fission yield of 6.1 percent. (newworldencyclopedia.org)
Even so, some technetium atoms are produced as uranium undergoes nuclear fission and there is about 1 milligram of technetium in a tonne of uranium. (rsc.org)

The Chemistry of Manganese, Technetium and Rhenium deals with the chemistry of manganese, technetium, and rhenium and covers topics ranging from the occurrence and metallurgy of all three elements to their properties and compounds. (elsevier.com)

Resumen en inglés The results of technetium 99m - methoxy-isobutyl-isonitril scintigraphy in a one-day protocol: rest - physical or combined stress (bicycle plus endovenoous dipiridamole) were compared with those of coronary angiography in 20 women referred for the evaluation of precordial pain and of the usefulness of myocardial perfusion scintigraphy. (worldwidescience.org)
It was concluded that the myocardial perfusion scintigraphy with technetium 99-MIBI contributes to the diagnosis of the coronary artery disease in women. (worldwidescience.org)
Physiological basis of myocardial perfusion imaging with the technetium 99m agents. (biomedsearch.com)
In recent years, several technetium 99m-labeled myocardial perfusion agents have been under investigation to determine their utility in assessing regional myocardial blood flow and cellular viability. (biomedsearch.com)

Palatin Technologies and the FDA have agreed on the immediate suspension of sales and marketing of NeutroSpec [Technetium (99m Tc) fanolesomab] in the United States, due to reports of serious and life-threatening cardiopulmonary events following the administration of the drug. (fda.gov)

Technetium-99m's short half life (6 hours) makes storage impossible, therefore it is supplied as its parent nuclide molybdenum-99, which spontaneously decays to technetium-99 through beta decay. (drugbank.ca)
INTERNATIONAL ATOMIC ENERGY AGENCY, Non-HEU Production Technologies for Molybdenum-99 and Technetium-99m, Nuclear Energy Series No. NF-T-5.4, IAEA, Vienna (2013). (iaea.org)

Technetium is placed between manganese and rhenium on the periodic table. (encyclopedia.com)
Periodic Table of Elements - Technetium - Tc. (environmentalchemistry.com)

In 1937, technetium (specifically the technetium-97 isotope) became the first predominantly artificial element to be produced, hence its name (from the Greek τεχνητός, meaning "artificial", + -ium). (wikipedia.org)
Because no isotope of technetium has a half-life longer than 4.2 million years (technetium-98), the 1952 detection of technetium in red giants, which are billions of years old, helped to prove that stars can produce heavier elements. (wikipedia.org)
The most stable isotope of technetium is 98Tc with a half-life of 4.2 million years, which is too short a time to allow the metal to be material from before the star's formation. (wikipedia.org)
Technetium-99 ( 99 Tc ) is an isotope of technetium which decays with a half-life of 211,000 years to stable ruthenium-99 , emitting beta particles , but no gamma rays. (wikipedia.org)
No isotope of technetium has a half-life longer than 4.2 million years ( 98 Tc), so its detection in red giants in 1952 helped bolster the theory that stars can produce heavier elements. (newworldencyclopedia.org)

Therefore, the detection in 1952 of technetium in stellar spectra provided unambiguous proof of nucleosynthesis in stars, one of the more extreme cases being R Geminorum. (wikipedia.org)
Current research indicate that the presence of technetium in AGB stars occurs after some evolution, and that a significant number of these stars do not exhibit the metal in their spectra. (wikipedia.org)

Technetium is now produced in nuclear reactors. (encyclopedia.com)
It is estimated that up to 1994, about 49,000 TBq (78 metric tons) of technetium was produced in nuclear reactors, which is by far the dominant source of terrestrial technetium. (newworldencyclopedia.org)

Technetium tc 99m mertiatide is to be given only by or under the direct supervision of a doctor with specialized training in nuclear medicine. (drugs.com)
Tell your doctor if you have ever had any unusual or allergic reaction to technetium tc 99m mertiatide or any other medicines. (drugs.com)
An alternative to this medication should be prescribed or you should stop breastfeeding while using technetium tc 99m mertiatide. (drugs.com)
A doctor or other health professional will give you technetium tc 99m mertiatide. (drugs.com)
Technetium tc 99m mertiatide is given through a needle placed in a vein. (drugs.com)
You should try to urinate right away and more frequently for 6 hours after receiving technetium tc 99m mertiatide. (drugs.com)
Drink plenty of fluids before and after receiving technetium tc 99m mertiatide so you will pass more urine. (drugs.com)
It is very important that your doctor check you closely while you are receiving technetium tc 99m mertiatide. (drugs.com)

They eventually gave the name technetium to the element, from the Greek word technetos, meaning "artificial. (encyclopedia.com)

Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. (curehunter.com)

Technetium is a chemical element with symbol Tc and atomic number 43. (wikipedia.org)
Several chemical extraction processes are used yielding technetium-99 metal of high purity. (newworldencyclopedia.org)

The next two sections focus on technetium and rhenium, their discovery, isolation, and general properties. (elsevier.com)

Technetium was discovered by Emilio Segrè in 1937 in Italy. (rsc.org)

Technetium Tc-99m disofenin is a radiopharmaceutical agent used in hepatobiliary imaging for diagnostic purposes. (drugbank.ca)

Currently marketed as the product Drytec, technetium-99m pertechnetate is indicated for imaging of the following tissues: thyroid, salivary gland, urinary bladder (for detection of vesico-ureteral reflux), and the nasolacrimal drainage system. (drugbank.ca)

For this reason, the environmental chemistry of technetium is an active area of research. (wikipedia.org)

An estimated 160 T Bq (about 250 kg) of technetium-99 was released into the environment up to 1994 by atmospheric nuclear tests. (wikipedia.org)

In contrast with the rare natural occurrence, bulk quantities of technetium-99 are produced each year from spent nuclear fuel rods, which contain various fission products. (newworldencyclopedia.org)

Technetium Tc99M disofenin is distributed to various tissues including blood, kidney, liver, urinary bladder and predominantly stomach and intestines [ 8 ] . (drugbank.ca)

Technetium Tc99m Disofenin is indicated as a hepatobiliary imaging agent. (drugbank.ca)

Nearly all technetium is produced synthetically, and only about 18000 tons can be found at any given time in the Earth's crust. (wikipedia.org)
Technetium was the first element not found in the earth to be made artificially. (encyclopedia.com)
Extraterrestrial technetium was found in some red giant stars (S-, M-, and N-types) that contain an absorption line in their spectrum indicating the presence of this element. (newworldencyclopedia.org)
Technetium long tantalised chemists because it could not be found. (rsc.org)
Technetium has never been found on Earth dispite extensive searches. (environmentalchemistry.com)

After about a million years, only 5 grams of a 10-gram sample of technetium-97 would remain. (encyclopedia.com)

including scores of properties, element names in many languages, most known nuclides of Technetium. (environmentalchemistry.com)

Technetium is a silver-gray metal with a melting point of 2,200 ° C (4,000 ° F) and a density of 11.5 grams per cubic centimeter. (encyclopedia.com)

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