I have to get a doppler test done on my left leg. Has anyone had one done? Sounds like it's just a type of ultrasound. And I need a CAT scan. The CAT scan scares me since from watching House on TV, that is where most patients end up with blood flowing out of their eyes and ears. I think I should have an MRI instead as I had a severe allergic reaction to iodine dye before. Are metal teeth fillings a concern in an MRI? I'm supposed to be in the emergency room having these done right now, but I don't feel like going to the emergency room right now, maybe later this evening. I'm still coughing vomit out of my lungs from last night, so I'm not in a good mood.