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Patricia Burns
Fri. 24 Oct.08,
19:20
[Reply (3 of 5) to:
'Mobile MRI - Keeping Magnet Cold'
started by: 'Will B'
on Thu. 23 Oct.08]
 Category:
Devices, Scanner, Machines
|
| Mobile MRI - Keeping Magnet Cold |
The chillers can be off during transport. For short trips, the boil off of cryogens will be minimal.
p.burns
|
|  View the whole thread | | |
Patricia Burns
Fri. 24 Oct.08,
13:17
[Reply (1 of 5) to:
'Mobile MRI - Keeping Magnet Cold'
started by: 'Will B'
on Thu. 23 Oct.08]
Category:
Devices, Scanner, Machines
|
| Mobile MRI - Keeping Magnet Cold |
Will,
When a mobile MRI Scanner is in motion going from site to site a "ramp down" is performed before moving.This is when the magnetic field is lowered but not completely shut off. The field still keeps it's integrity due to the Cryogens that surround it. When it comes to the new site, a "ramp up" is performed to bring the magnetic strength back up to par. Bottom line...The Cryogens are not boiled off and keep the magnet cold when it is motion. If the magnet were to suddenly lose it's power, it could be due to a cryogen boil off.
p.burns
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Will B
Thu. 23 Oct.08,
06:47
[Start of:
'Mobile MRI - Keeping Magnet Cold'
4 Replies]
Category:
Devices, Scanner, Machines
|
| Mobile MRI - Keeping Magnet Cold |
Hello,
I'm new to the MRI modality; I've mostly worked with CT over the years.
Something donned on me today, regarding mobile MRI's. How is the magnet kept from going warm while in transport?
Thanks,
Will
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Reader Mail
Wed. 17 Sep.08,
22:06
[Start of:
'mri per diem tech'
3 Replies]
Category:
Jobs
|
| mri per diem tech |
We need an MRI Tech trained on AIRIS II at our facility in Orange County California on a per diem basis. The shift is 4-8 pm mondays and Thursdays. If interested call steve 714-585-5380.
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John Jackson
Fri. 12 Sep.08,
08:48
[Reply (1 of 3) to:
'Regarding recovery and decay [basic phycisc]'
started by: 'harry sanders'
on Sat. 7 Jun.08]
Category:
Basics and Physics
|
| Regarding recovery and decay [basic phycisc] |
Hi,
I'm not so sure but I think because different physical process are being involved. Longitudal relaxation has got something to do with energy exchange to the environment. Transverse relation occurs because of spin dephasing (magnetic inhomogenity.)
John
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