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 nuclide for the treatment of benign hyperthyroid ...

Iodine-131 Used to treat thyroid ... Carbon-14 decays by beta-emission and has a half-life of 5730 years. This means that the beta-decay emissions can be monitored and the data used to calculate ...