Hi. Sorry you are dealing with this, but glad you found this site.
I have had thyrogen 3 times and never had a side effect from them. there are others that have, but it is by no means the usual. no matter what, it HAS to be better than going hypo, right????
the RAI used for the scan is much less than what is used for the therapeutic dose. The scan is usually about 4 or 5 mCi and carries far fewer precautions. The therapeutic dose can be from 50 mci and up (mine was about 150).
I too panic during the scan. These things have helped me...
someone there keeps their hand on my upper arm until the scanning plate is past my nose. One group turned on a small fan so that I could feel cool air at all times and they insisted that I keep my eyes closed. that was very difficult. Sometimes, someone will just sit and talk with me until my head is free of the device. I pray. alot. I don't know why, but just knowing someone is there really helps me. Because I know that it isn't going to collapse and smother me, but I sure feel like it is. Best of luck to you!! I'll be thinking about you. Please let us know how it goes.