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Please play nicely.  No one wants to listen/read a keyboard warriors rants....

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Author Topic: MRI scan...  (Read 2277 times)

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Matchless

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Re: MRI scan...
« Reply #15 on: 27 May 2014, 15:52:58 »

There always going to bang when your turning a bloody great big magnetic coil on and off like that lol.

Still, it gets your body 'back into alignment' (all be it for a fraction of a second!)

Nope...the magnet is on continuously which 'pulls' all your atoms into alignment with the magnetic field;  we then blast you with a massive pulse of RF which deflects the atoms slightly out of line with the static field (and creates the noises), at the end of the RF pulse the molecules re-align with the static field at a rate which is characteristic to each molecule and release energy as a weak RF signal as they do so.
Very sensitive RF receiving coils detect the energy released and then it is up to the computers to convert this into an image representing body tissues or a display of molecular types and concentrations within a particular part of the body.
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Gaffers

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Re: MRI scan...
« Reply #16 on: 27 May 2014, 15:56:19 »

I feel violated........ :-[

Not again? ::)

At least you weren't watching in the corner like last time?



Or were you?
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PhilRich

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Re: MRI scan...
« Reply #17 on: 27 May 2014, 21:28:01 »

Last one I had, I swear my wedding ring felt like it was being dragged off my finger! :D
Do these machines have Second Sight :o ;D
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If it ain't broke keep fixing it 'til it is!

kevinp58

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Re: MRI scan...
« Reply #18 on: 27 May 2014, 22:02:07 »

I had full body one a couple of years ago about 20 minutes,  :y and then they said it was no good so need to do it again,  ::) >:( just as well I am not claustrophobic.  ;D
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biggriffin

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Re: MRI scan...
« Reply #19 on: 28 May 2014, 09:22:47 »

Had one couple weeks ago. The contrast drink tastes like pernod, and you just doze off listening to the hum of the machine,and think you in an episode of star trek :)
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