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MRI is trending to low field magnets :
reduced costs will lead to this change 
AI will close the gap to high field 
only in remote areas 
is only temporary 
never 




 
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'Gauss'
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Kathy Dumont

Sun. 6 Jan.08,
20:31

[Reply (2 of 6) to:
'Protection against magnetic exposure'
started by: 'Kathy Dumont'
on Sat. 5 Jan.08]


 
  Category: 
Safety

 
Protection against magnetic exposure
Thank you very much Reader, for you answer very quickly! Sorry, I didn’t express myself very well. No, I don’t want to know about the “Gauss lines” (it’s how we say in France).

In the site of the World Health Organization, they talk about “The International EMF Project”.

I’m searching for informations about the effets of the magnetic fields on the human health. And the laws, if they exist in USA?
In France, there are no limits or laws which say the limits (time limits, job in high fields…) when you work at mri.
We just tell the pregnant not to go in the mri room. That’s all. I think you’re getting ahead France in this domain. For me, mri technology is like radiology’s first times, when Marie Curie discovered that tumor increased while X Ray exposure increased. You know?
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Chris Gardener

Wed. 11 May.05,
22:43

[Reply (1 of 2) to:
'Radio frequency exposure'
started by: 'Reader Mail '
on Tue. 3 May.05]


 
  Category: 
Basics and Physics

 
Radio frequency exposure
If the magnetic field strength (measured in Tesla/Gauss) increases, also the SAR increases. For fields up to 3.0 Tesla, the value of SAR is proportional to the square of the field but at high fields the body becomes increasingly conductive, with the need of increased RF power. The EMF exposure is reduced by the square of the distance.

Hope this will help
Chris
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Reader Mail

Tue. 3 May.05,
21:21

[Start of:
'Radio frequency exposure'
1 Reply]


 
  Category: 
Basics and Physics

 
Radio frequency exposure
Is there a relationship between SAR and Gauss? A conversion formula? Also, is the EMF exposure reduced by the square or the cube of the distance?
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