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'Magnet'
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Michael Murphy

Sun. 17 Feb.13,
16:03

[Start of:
'Cost of ONI / GE MSK 1.0 Magnet'
0 Reply]


 
  Category: 
Devices, Scanner, Machines

 
Cost of ONI / GE MSK 1.0 Magnet
Any one purchased ONI / GE 1.0 T MRI scanner recently. If share approximate cost of unit (only unit), appreciate your help.

If some one give me what the best price for about 6-8 year old ONI MSK 1.0 T unit or even guess good condition scanner price, that will be also greatly appreciated.

Thanks in advance.
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Karsten Miesel

Tue. 17 Aug.04,
02:02

[Start of:
'material with 'zero' magnetic susceptibility'
2 Replies]


 
  Category: 
Basics and Physics

 
material with 'zero' magnetic susceptibility
Does anybody know some material, that is still easy to machine, better non-conductive and - most important - has a susceptibility close to zero. Is there composite materials that are especially made for such purposes?
I know that coils for NMR are usually made like this, but I'm looking for some material that I could make a whole NMR probe out of. It should be non-conductive, because I don't want eddy currents.

thanks in advance, Karsten
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Herbert Müller

Thu. 5 May.22,
01:33

[Reply (11 of 12) to:
'90 excitation pulse vs 180 inversion pulse'
started by: 'Bjorn Redfors'
on Sat. 27 Jun.09]


 
  Category: 
Basics and Physics

 
90 excitation pulse vs 180 inversion pulse
Hello,

I dont know if anyone has, for him/herself, answered this question. I know it is an old thread. But this is the question which also botheres me the most in NMR/MRI.

I refer now to a picture, which is illustrated in the book from Tim Claridge (High resolution NMR techniques).
Here, a RF pulse (lets say a 90 degree pulse) is said to have two effects on the initial z-magnetisation. First, it allows energy transfer between the two Zeeman-states in a way, that i equalizes the population difference between them. So there is no z- magnetisation anymore after 90 degree pulse. Th esecond effect is, that it induces phase-coherence. And this phase coherence is then responsible for the x-magnetisation, which is measured.

And now I have the same question. Why is this phase coherence lost (or is it not?), when applying an initial 180-degree pulse. Understandable for me is, why the population difference in z is reversed, but I dont understand, why there is no xy magnetisation anymore.

Maybe some of you have figured out the answer in the meantime?

Greetings
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We Are ISS

Fri. 28 Jan.22,
02:16

[Start of:
'What is the career growth in MRI technology?'
0 Reply]


 
  Category: 
General

 
What is the career growth in MRI technology?
The career growth for MRI technologists has a very good scope. The MRI technologist has to operate big tube-like machines that use a magnetic field and radio waves to make images of patients' organs, tissue, and bones. So, there is a good scope from them, it is projected to the 9 percent from 2020 to 2030.
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We Are ISS

Fri. 28 Jan.22,
01:59

[Reply (1 of 2) to:
'What is the career growth in MRI technology?'
started by: 'Indiancareerclub Clubindia'
on Mon. 25 May.09]


 
  Category: 
Jobs

 
What is the career growth in MRI technology?
MRI technologists have a bright future in terms of career progression. The MRI technician is responsible for operating large tube-like machines that use a magnetic field and radio waves. As a result, there is a good scope from them; it is projected to be 9% from 2020 to 2030.
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