My doctor says my Graves' disease should be treated with radioactive iodine
-  What is radioactive iodine?
-  What are the risks associated with treatment with radioactive iodine?
-  How are doses of radioactive iodine chosen?
-  What actually happens when a patient receives a dose of radioactive iodine?
-  What further treatment is required after a patient has received a dose of radioactive iodine?