If you look on the thyroid health pages here - you will find all kinds of information/
the thyca website has a wonderfull list of foods and recipes that you can print out.
Cook up stuff and freeze for later cause you wont feel much like cooking one you go hypo.
Good luck with your scan.
Love Venora
Go to Thyca.org and they list a Low Iodine Diet Cookbook that should help you
Good Luck
Sandra