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Posted by / 29-Jul-2017 06:03

Radioisotope dating video

In fact, they have been used routinely in medicine for more than 30 years.On average, one in every two Australians can expect at some stage in his or her life to undergo a nuclear medicine procedure that uses a radioisotope for diagnostic or therapeutic purposes.Find a list of common radiopharmaceuticals, including half-life and uses for each one.There is a significant difference between nuclear imaging and other medical imaging systems such as CT (computerised tomography), MRI (magnetic resonance imaging) or X-rays.Some radioisotopes used in nuclear medicine have very short half-lives, which means they decay quickly; others with longer half-lives take more time to decay, which makes them suitable for therapeutic purposes.Industry uses radioisotopes in a variety of ways to improve productivity and gain information that cannot be obtained in any other way.If very little of the radioisotope has been taken up a ‘cold spot’ will show on the screen indicating, perhaps, that blood is not getting through.A ‘hot spot’ on the other hand may indicate excess radioactivity uptake in the tissue or organ that may be due to a diseased state, such as an infection or cancer.

In most cases, the information is used by physicians to make an accurate diagnosis of the patients illness.Some hospitals have their own cyclotrons, which are generally used to make radiopharmaceuticals with short half-lives of seconds or minutes.A radiopharmaceutical is a molecule that consists of a radioisotope tracer attached to a pharmaceutical.Atoms containing this unstable combination regain stability by shedding radioactive energy, hence the term radioisotope.The process of shedding the excess radioactive energy is called radioactive decay.

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The most common is technetium-99m, which has its origins as uranium silicide sealed in an aluminium strip placed in the OPAL reactor's neutron-rich reflector vessel surrounding the core.

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