1- No, studies have found it is not possible to do this, so the usual goal (particularly for Graves) is to ablate the entire gland and replac with medication.
2 - No difference in the dosage, the asians treat less patients with I-131 than Americans
3 - there is little risk of cancer from I-131 radiation for hyperthyroidism, but there is some risk. Would avoid conception for at least 3-4 months, but sperm banking not likely necessary.
4- Yes, if there is eye disease, this should be stabilized first. And steroids should be given around the time of the I-131
5 - evenutually yes in most cases, but in some cases they get worse.
Perfect. I am grateful to you for the professional answers and suggestions. It is amazing to get the kind help from a expert like you here.
Thank you so much.