Incidence of Hypothyreoidism after Radioactive Iodine-I131 Treatment in Dependance of Hyperthyreoidism Etiology and Therapy Dose.

The hypothyroidism incidence rate is the highest among patients with Graves' diseases and the lowest among the TA patients. It's mostly developed after dose quantity of 10.1-15mCi and it is rare at dose quantity less than 5mCi. 50% of hypothyroidism were developed among patients with diffuse goiter, Graves'disease.