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The radioisotope most widely used in medicine is technetium-99m, employed in some 80% of all nuclear medicine procedures. It emits detectable gamma rays

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The radioisotope most widely used in medicine is technetium-99m, employed in some 80% of all nuclear medicine procedures. It emits detectable gamma rays

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Sodium-24:
utlized as tracers to study blood circulation

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Radioactive elements are used as traces to find diseases.

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Nuclear medicine was developed in the 1950's by physicians with an endocrine emphasis, initially using iodine-131 to diagnose and then treat thyroid disease. In recent years specialists have also come from radiology, as dual CT/PET procedures have become established, increasing the role of accelerators in radioisotope production.

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isotopes like cobalt 60 are commonly used to treat cancer

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Sterilisation of medical equipment is an important use of radioisotopes.

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Sterilization of medical equipment is also an important use of radioisotopes.

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Sterilization of medical equipment is also an important use of radioisotopes.

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http://www.world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx

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Technetium-99m  goes to specific disease sites in the body or concentrates in organs such as
the heart.

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Technetium-99m  goes to specific disease sites in the body or concentrates in organs such as
the heart.

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https://isotopes.gov/outreach/med_isotopes.html

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some radioactive isotopes used in medicine are isotope iodine-123, fluorine-18, gallium-67, krypton-81, rubidium-82, nitrogen-13, technetium-99m\, indium-111, iodine-123, xenon-133, and thallium-201.

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http://www.macmillan.org.uk/information-and-support/treating/radiotherapy/internal-radiotherapy-explained/radioisotopes.html

Radioisotopes are used to kill cancer cells.

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Cobalt-60 is used for radiation therapy to prevent cancer.