There have been several stories in the news lately about people being exposed to high levels of radiation during certain types of tests, usually CT scans have the finger pointed at them for the most radiation exposure. The problem with these scans is not just the higher levels of radiation (up to 200 times that of a typical X-ray), but the fact that many people are getting them when they have no symptoms of anything. The most famous culprit is the full-body CT scan, which many people (including some of my family members) like to get for "peace of mind," even though the doc has said that they are perfectly healthy.
This led me to wonder about MRIs and radiation (or anything else potentially nasty from MRIs). Don't want to spoil the punchline to my article, but looks like there is nothing to worry about from MRIs, unless you have an allergy to gadolinium or a kidney problem that could be exacerbated by gadolinium exposure. No radiation is emitted during an MRI scan. Of course, MRIs aren't very fun for people with claustrophobia, either. And, they can be expensive. However, they are pretty much benign tests, so don't worry about any negative health effects when you climb in "the tube."
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