Question

How can radioisotopes be used to diagnose brain tumor?

Answer 1

Reactor-produced medical radioisotopes. Used in the treatment of excess red blood cells. Used to label red blood cells and quantify gastro-intestinal protein loss. Used as the 'parent' in a generator to produce technetium-99m, the most widely used radioisotope in nuclear medicine.

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A radioisotope used for diagnosis must emit gamma rays of sufficient energy to escape from the body and it must have a half-life short enough for it to decay away soon after imaging is completed. The radioisotope most widely used in medicine is Tc-99, employed in some 80% of all nuclear medicine procedures.