A few emit auger electrons and alpha particles, and several also emit gamma rays and X-rays during their decay. The most successful metabolic radionuclide for thyroid therapy uses iodine-131 as the ...

Iodine-131 Used to treat thyroid gland (in the neck ... This means that the beta-decay emissions can be monitored and the data used to calculate how long it has been since the material was ...

The time that it takes for half the radionuclides to disintegrate or decay is called half-life. This differs for each radioelement, ranging from fractions of a second to billions of years. For example ...