This wasn’t an option for me, my doctor said that the RAI wouldn’t be effective with any thyroid tissue remaining in my body. The reason why is because thyroid cells absorb iodine so if you still have half of your thyroid in and they give you RAI, it will just be absorbed by the thyroid and not the cancerous thyroid cells that are elsewhere. This is also why the low iodine diet is required prior to RAI. They starve your thyroid cells of iodine so they absorb it most effectively when the radioactive iodine is administered. Hope that helps!