Strength of MRI magnetic field and associated dangers

MRI scanners have greatly enhanced medical imaging. They have contributed enormously to the treatment of many illnesses and injuries. Many people are unaware of the strength of the magnetic field the body is subjected to. This safety video is a demonstration, and also points out the implications for patient safety.
rembarsays...

I watched this worried that this was going to be an "OMG TEH MAGNETISM POISONS UR BODY" kinda thing. This is a pretty good warning video, but it doesn't belong in the Science channel.

snoozedoctorsays...

Strange, of all the channels that I thought could apply, I thought Science was the only one that did really apply. What channel is most appropriate for pieces on medicine, high technology imaging, magnetic fields and their interaction with ferric metals? As a physician, I'm puzzled.

bamdrewsays...

yeah, this is totally a *science sift. colleagues of mine use a nice new 4 tesla; that beast can rock and roll, and its really interesting to actually see someone risk damaging their machine and room by performing this demonstration.

rembarsays...

What channel is most appropriate for pieces on medicine, high technology imaging, magnetic fields and their interaction with ferric metals? As a physician, I'm puzzled.

Well, this video didn't really contain anything on medicine or high technology imaging, and barely covered magnetism beyond the fact that it can do dangerous things. It's a safety video, it didn't really touch on anything scientifically interesting. But if you truly insist...

bamdrewsays...

... well, I'd hazard to say there are many science sifted videos that only demonstrate something that you can look up information about, for example all of those corn starch physics ones explain in no way what the hell is going on with the molecular structure of corn start when you shake if fast (or run across it).

I can see your point, but you can see ours as well. Its a bizarre yet increasingly common piece of medical diagnositc equipment that creates an incredible magnetic field, and here's a demo about how crazy that magnetic field (which is usually pointed at your brain) actually is.

garshsays...

The last time I had an MRI, it felt like my pants had gotten stuck on something as they were sliding me into the machine. Then I looked down and noticed my belt-buckle pulling away from my pants towards the middle of the machine. I asked if I could remove my belt before I went in any further. I wasn't even really in the machine - I was just having my broken ankle inserted.

snoozedoctorsays...

You have to be vigilant when entering the MRI environment. I always have to check my pockets for keys and pens, remove my wallet, wrist-watches, beepers, phones, etc. At our institution, a metal trolley was being used to carry in a new component, (not while the MRI was in use), and, you guessed it, it was on wheels and it took off. It took a powerful winch to get it disengaged. You always have to be on your toes.

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