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MRI Explosion



Uploaded by: drrjv
Video Description:
Interesting news clip of an MRI scanner deinstallation where upon the Magnet blew up (due to pressure of liquid helium or nitrogen evaporation).




Tags for this video: explosion helium imaging magnetic MRI nitrogen resonance

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we wouldn't have ... ( 8 months ago by christheferal)
we wouldn't have technicians without the technology
Human error is to ... ( 8 months ago by SatoriSoul)
Human error is to blame... plain and simple... and since the technicians are responsible for both removal and installation of the units they are the ones who have ultimate responsibility for what occures. So I stand by my statement regardless of who does or doesn't like it, having had more then a few MRI's done I know they are safe and would reccomend that anyone get them who need them, in this case it was human error meaning the technicians were at fault- right or wrong the buck stops there.
I didn't say they ... ( 8 months ago by christheferal)
I didn't say they were safe but really, we wouldn't have techies without the tech, we wouldn't have tech without the humans so really its all of us to blame for supporting tech..
And I agree with ... ( 8 months ago by SatoriSoul)
And I agree with you 100%... Go Tech! I support it all the way... come hell or high water it's here to stay.
Sorry.. this is ... ( 8 months ago by christheferal)
Sorry.. this is going off topic but have you seen the possibilities with nano-tech? amazing, huh? you can spill water on a device and it will push it off without effecting the device.
it was suppose to ... ( 8 months ago by wechselkind)
it was suppose to be a beautiful day
im just wondering ... ( 6 months ago by wasabibaron)
im just wondering how technology is ever to blame? technology doesnt build technology, it doesnt evolve or devolve, think, design... it just does as its told. HUMANS design technology so ultimately due to human error technology fails.
imagine if ironman ... ( 6 months ago by KidFunkyFry15)
imagine if ironman got an mri huh? yeah
I think that the ... ( 5 months ago by troshs)
I think that the MRI machine was a little ticked off that he was getting replaced. LOL this was his way of saying "SON OF A BITCH, YOU'LL NEVER TAKE ME ALIVE!"
I know, I'm a dork.
imagine if your ... ( 5 months ago by stonerj0e)
imagine if your head was in there?!?
funny! ( 5 months ago by masterrotc)
funny!
funny dork!lol ( 4 months ago by Teenom)
funny dork!lol
Array ( 4 months ago by nurbsenvi)
ha.. ha...
Imagine a tin man getting a MRI huh? yay~
Doctor goes:
Oh my god you are missing a heart!
Sure it's safe ... ( 4 months ago by semethis)
Sure it's safe ...
Great, now im never ... ( 4 months ago by leetshoot)
Great, now im never getting into one, thanks
lol
It could also have ... ( 4 months ago by supersandor)
It could also have been caused if they didn't remove the current through the superconductor. All the energy in the magnetic field would have been released in an instant when the coil suddenly stopped superconducting and that's generally several megajoules. That's what happens when you stop the current in a huge inductor all at once. Or it could have just been the pressure from the cryogenic fluid.
I'd say the helium ... ( 3 months ago by DJGahann)
I'd say the helium compartment sprung a leak due to pressure changes from venting. Any MRI can be safely shut down immediately with the press of an emergency button cutting power to coils. I work with small MRI's only, but that's what I can tell you.
cutting the power ... ( 3 months ago by Constantine331)
cutting the power to a superconductor does not "shut it down"
as long as a superconductor is kept cold enough to continue 'superconducting' it can hold it's charge FOREVER. Literally.
BLEVE - Boiling ... ( 3 months ago by RejectionMan)
BLEVE - Boiling Liquid Expnading Vapor Explosion.
A Gas compressed to liquid form was being vented off. This resulted in rapid boiling of the remaining liquid and rapid gas pressure build up. result is BANG.
Pretty common actual, trick is in keeping up with the vent rate or controling the boiling (cooling or pressure). eg. propane expangs to 240 times its liquid volume, it will not fit in the same size space as its liquid counter part unless you get it back into liquid form.
lmao, my head, neck ... ( 1 month ago by rainechosen)
lmao, my head, neck and back go into a MRI twice a year. I have MS, I hate those friggin MRIs. Smalled, confined tube, a cloisterphobic nightmare. I have to take a muscle relaxer everytime I get an MRI prior to the test.
If Tin Man went in there, that's be the end of hime, you can't put anything metal whatsoever inside that machine. It'll suck it right up.
Looks like they ... ( 1 month ago by quantumbits)
Looks like they needed to contact the manufacturer and follow the proper decommissioning procedure.
it is not possible ... ( 2 weeks ago by v4biker)
it is not possible to instantly ramp down a magnet safely. most medical scanners will require 1 to 6 hours to ramp down safely. it is possible to force a quench by pushing a button and it will shut down in a couple min with relative safty but this requires the exhaust vents work perfectly . most medical MRI units hold 1500 to 2000 liters of liquid helieum which converts to a gas at a 700 to one ratio
If the deinstaller ... ( 2 weeks ago by v4biker)
If the deinstaller ramped down the magnet there would still be 1000 to 2000 liters liquid helieum without external without some form of refridgeration the gas would expand and vent out the exhaust, but remember this starts at -473 degrees farenheit the escaping gas would cause water vapor in the air to condense and freeze in the vent eventually blocking the path for escaping gas. the pressure would build up to a point where it would explode like an overinflated tire
Magnetic resonance ... ( 2 days ago by CincinnatiKid33)
Magnetic resonance imaging


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