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| Result: Searchterm 'Magnet'
found in 87 messages |
| Result Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 [17] 18 |
More Results:  Database (669) News Service (897) Resources (213) |
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Zhang Lifeng
Sun. 21 Aug.05,
15:00
[Reply (2 of 3) to:
'material with 'zero' magnetic susceptibility'
started by: 'Karsten Miesel'
on Tue. 17 Aug.04]
 Category:
Basics and Physics
|
| material with 'zero' magnetic susceptibility |
I think Ti is a good material, for my service tools are made of Ti and I never feel any external force acts on my tools when I work near the Magnet.
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|  View the whole thread | | |
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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| | View the whole thread | | |
andrew glenn
Fri. 8 Oct.04,
21:42
[Reply (1 of 2) to:
'Power Injector'
started by: 'Don Monterez'
on Mon. 27 Sep.04]
Category:
Equipment
|
| Power Injector |
we have had great success with a Medrad Spectris power injector - peripheral angios can be done using 20mls gad at flow rate of 1ml/sec without venous return.(siemens symphony magnetom 1.5T)
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| | View the whole thread | | |
Neil Brice
Tue. 28 Sep.04,
04:29
[Start of:
'Machine Opening artifact'
1 Reply]
Category:
Artifacts
|
| Machine Opening artifact |
Does anyone know anything about the artifact created by the opening of the MR. I know it is do to bending in the magnetic feild, but is there any solutions, like a simple image transform? Or is there a specific name for this problem that I could research more?
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| | View the whole thread | Reply to this thread
(login or register first) | |
Service
Tue. 18 May.04,
15:51
[Reply (1 of 2) to:
'Cardiac Stent'
started by: 'Reader Mail '
on Tue. 18 May.04]
Category:
Safety
|
| Cardiac Stent |
MRI-related problems with metallic prosthetic grafts are the magnetic moment and the heating possibility.
New cardiac stents (produced in the last 5-8 years) are mostly out of non-magnetic material. 2-3 month after the stent implantation it is to expect that stents will be covered with tissue and a movement in the magnetic field is unusual. A small risk of heating caused by induction remains
(the risk depends on the field strength and the scanned region) - but the fast flowing blood is a good cooling system and reduces this risk in addition.
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