Thanks for your advice. I guess I just have to mention it to the tech. My doctor said I have to have the contrast. It's a check of nodules in the lungs (first seen six months ago).
Hm, sorry that happened, but things can happen. I'm not sure anyone can give you an idea of if this will happen again, but perhaps you should mention this to the tech when you check in, and they can lower the injection rate.
Additionally, many Chest CTs don't require IV contrast, depending on what it is being done for. You can mention this to your doctor to see if contrast is definitely necessary.