radioisotope

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radioisotope

 [ra″de-o-i´so-tōp]
a radioactive form of an element, consisting of atoms with unstable nuclei, which undergo radioactive decay to stable forms, emitting characteristic alpha, beta, or gamma radiation. These may occur naturally, as in the cases of radium and uranium, or may be created artificially. Scientists create artificial radioisotopes by bombarding stable atoms of an element with subatomic particles in a nuclear reactor or in an atom smasher, or cyclotron. When the nucleus of a stable atom is charged by bombarding particles, the atom usually becomes unstable, or radioactive, and is said to be “labeled” or “tagged.” See also radiation therapy.

ra·di·o·i·so·tope

(rā'dē-ō-ī'sō-tōp),
An isotope that changes to a more stable state by emitting radiation.

ra·di·o·i·so·tope

(rā'dē-ō-ī'sŏ-tōp)
An isotope that changes to a more stable state by emitting radiation.

radioisotope

see ISOTOPE.

Radioisotope

A chemical tagged with radioactive compounds that is injected during a nuclear medicine procedure to highlight organ or tissue.

ra·di·o·i·so·tope

(rā'dē-ō-ī'sŏ-tōp)
An isotope that changes to a more stable state by emitting radiation.
References in periodicals archive ?
In cooperation with DOE Global Threat Reduction Initiative (GTRI), Canada funded the removal of 59 radioisotopic thermoelectric generators (RTGs) along the Northern Sea route in the Russian Arctic and the Far East from 2007 to 2011, including disassembly and replacement by solar panels.
However, this assumption can now be tested using [sup.14]C radioisotopic dating of biogenic carbonates in highresolution deep sea cores (i.e.
Some of these include CC, urea, inulin, and radioisotopic methods.
This research was financially supported by the following project: 'Soil erosion and carbon dynamic in Mediterranean agroecosystems: radioisotopic modelling at different spatial and temporal scales' (MEDEROCAR, CGL20084-0831/BTE) funded by the Spanish Ministry of Science and Innovation.
An appropriate imaging technique for assessing the adequacy of a biliary-enteric anastomosis is a radioisotopic HIDA scan (1-2).
The exclusive use of marine stages in the international stratigraphic scale involved de facto the abandonment of the terms Autunian and Saxonian and the continental series are nowadays reported to their marine equivalent by radioisotopic data or to references to marine series showing fossiliferous continental intercalations.
TABLE 2 shows the radioisotopic measurements obtained by alpha spectrometry following the procedure described by Bischoff & Fitzpatrick (1991).
radioisotopic analyses of Ventana exposures with uncertain relationship
That there is overwhelming evidence for massive radioactive decay in the past is substantiated by an analysis of fission tracks in zircons and by repeated measurements of the usual radioisotopic dating methods.
Demarquoy, et al., "Radioisotopic Determination of L-Carnitine Content in Foods Commonly Eaten in Western Countries," Food Chem.