5 ms·

See also: The gallery of flying objects sent in by people who work with MRI machines: http://www.simplyphysics.com/flying_objects.html http://www.simplyphysics

by po 15y ago

See also: The gallery of flying objects sent in by people who work with MRI machines: http://www.simplyphysics.com/flying_objects.html http://www.simplyphysics.com/flying_objects.html I worked with an NMR machine in college and would always have to empty my pockets before entering the room. I'm not sure I really understood the danger. I heard stories about people having piercings ripped out though.

jarek 15y ago
A child was killed in 2001 when an oxygen tank got pulled into an MRI machine he was in: http://www.nytimes.com/2001/07/31/nyregion/boy-6-dies-of-skull-injury-during-mri.html http://www.nytimes.com/2001/07/31/nyregion/boy-6-dies-of-sku... Some system or another was running low on oxygen, someone panicked and grabbed a tank carelessly, next thing you know a tank is free where it shouldn't be.
- lostlogin 15y ago
  Projectile injuries are one issue. Heating, induced current, hearing loss are others. FDA is investigating setting up a registry for safety problems to help reduce the frequency of accidents. http://www.auntminnie.com/index.aspx?sec=sup_n&sub=bai&pag=dis&itemId=96699 http://www.auntminnie.com/index.aspx?sec=sup_n&sub=bai&#.... There are some shockers out there. Metal detectors on doors etc. Stopping the guy with a pacemaker is important too.
yread 15y ago
I've heard of a technician getting killed by flying keys of somebody else when standing next to a NMR machine
dedward 15y ago
And those, i think, are just from the fixed magnets (which may be a type of superconducmting electromagnet thats just normally on.). During a scan, dont mangetic fields go way way up? The fixed ones are just there for stability and whatnot.
- po 15y ago
  They are superconducting magnets kept that way through cryogenic helium. They can lose their magnetism through a process called quenching. If you search on youtube for "MRI quench" there are several videos of people messing around with MRI's before they get decommissioned. Not exactly safe. http://www.youtube.com/watch?v=5z33ZcDgavY http://www.youtube.com/watch?v=5z33ZcDgavY http://www.youtube.com/watch?v=6BBx8BwLhqg http://www.youtube.com/watch?v=6BBx8BwLhqg There is a lot of helium in there and it can explode: http://www.youtube.com/watch?v=1R7KsfosV-o http://www.youtube.com/watch?v=1R7KsfosV-o

by po 15y ago

jarek 15y ago

A child was killed in 2001 when an oxygen tank got pulled into an MRI machine he was in: http://www.nytimes.com/2001/07/31/nyregion/boy-6-dies-of-skull-injury-during-mri.html http://www.nytimes.com/2001/07/31/nyregion/boy-6-dies-of-sku... Some system or another was running low on oxygen, someone panicked and grabbed a tank carelessly, next thing you know a tank is free where it shouldn't be.

lostlogin 15y ago
Projectile injuries are one issue. Heating, induced current, hearing loss are others. FDA is investigating setting up a registry for safety problems to help reduce the frequency of accidents. http://www.auntminnie.com/index.aspx?sec=sup_n&sub=bai&pag=dis&itemId=96699 http://www.auntminnie.com/index.aspx?sec=sup_n&sub=bai&#.... There are some shockers out there. Metal detectors on doors etc. Stopping the guy with a pacemaker is important too.

yread 15y ago

I've heard of a technician getting killed by flying keys of somebody else when standing next to a NMR machine

dedward 15y ago

And those, i think, are just from the fixed magnets (which may be a type of superconducmting electromagnet thats just normally on.). During a scan, dont mangetic fields go way way up? The fixed ones are just there for stability and whatnot.

po 15y ago
They are superconducting magnets kept that way through cryogenic helium. They can lose their magnetism through a process called quenching. If you search on youtube for "MRI quench" there are several videos of people messing around with MRI's before they get decommissioned. Not exactly safe. http://www.youtube.com/watch?v=5z33ZcDgavY http://www.youtube.com/watch?v=5z33ZcDgavY http://www.youtube.com/watch?v=6BBx8BwLhqg http://www.youtube.com/watch?v=6BBx8BwLhqg There is a lot of helium in there and it can explode: http://www.youtube.com/watch?v=1R7KsfosV-o http://www.youtube.com/watch?v=1R7KsfosV-o