Use of radioisotopes in carbon dating

These are unstable isotopes of the elements which are undergoing nuclear transmutations by themselves and are emitting radiations.

Such artificially produced radioactive elements are called radioactive isotopes.A computer uses this information to construct an image (called a PET scan) of the organ that is being examined.PET scans have been used to study the effects of drugs on cancers, to measure damage in victims of stroke or heart attack, and to study chemical changes that occur during epileptic seizures..Remembering that the half-life of carbon-14 is 5700 years, then after 5700 years half as much carbon-14 remains within the organism.Glucose tagged with carbon-11 (half-life, 20.3 minutes and positron decay mode) circulates through the body, and the positrons emitted in the heart, brain or some other organ are monitored by a PET detector.

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