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| Result: Searchterm 'Hardware'
found in 5 messages |
| Result Pages: [1] |
More Results:  Database (19) News Service (3) Resources (4) |
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Steven Ford
Fri. 26 Oct.18,
02:29
[Reply (1 of 2) to:
'When to shim?'
started by: 'Matt H'
on Fri. 27 Oct.17]
 Category:
General
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| When to shim? |
you ask a complex question. Any sequence that is not a standard spin echo can benefit from shimming, but its not always worth it.
If you are scanning a knee in the center of the magnet, or nearly so, you might not see much difference in gradient echo scans, which in general are quite sensitive to shim problems. But if you are doing fat-water separation or fatsat images, you will see a difference even in this example.
Because hardware varies, its hard to say in one blanket statement for every case. For sure, do it on fatsat or fat-water imaging. The next most sensitive studies are off-center imaging such as shoulders. Beyond that, you should experiment a little. Of course, erring on the side of caution is a good idea.
Steven Ford
Professional Imaging Services, Inc.
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|  View the whole thread | | |
Arnold Somereville
Sun. 23 Apr.17,
18:06
[Start of:
'GE 8 channel Body Coil Artifact'
2 Replies]
Category:
Artifacts
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| GE 8 channel Body Coil Artifact |
Have a GE 1.5T HDxt. Problem: experiencing symmetric artifacts in abdominal images. Artifact seen in most anterior images: Some are rectangular in appearance, another reminds me of a plastic knife. All patients are changed in gowns/pants prior to entry into MRI suite. The body coil in question has been changed 3 times but the artifact remains. I suspect this is a hardware reconstruction issue, however, the engineer thinks it is operator error. I have run this sequence with and without options. This is an SSFSE, breath hold sequence. Has anyone encountered this issue?
 MRI Abdomen 8 channel body coil
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twid twid
Mon. 10 Jun.13,
18:07
[Start of:
'BUild MRI machine'
0 Reply]
Category:
Devices, Scanner, Machines
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| BUild MRI machine |
is it possible to get mri hardware without computation hardware and software for image reconstruction?
I means, I want to by only hardware to get data from sensor and i have computation unit and software for image reconstruction...
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Wolfgang Preuss
Tue. 21 Apr.09,
14:32
[Reply (3 of 4) to:
'GE LX MRI Platform?'
started by: 'Stuart Allison'
on Tue. 16 Sep.08]
Category:
Devices, Scanner, Machines
|
| GE LX MRI Platform? |
LX platform was starting 1997; upgrade from 5x to LX (9.1) is the whole hardware except Magnet and table, LX was the last platform for 1.oT systems. All 1.5T and 3.0T system can be upgraded to 15x ( HDxT) platform but all magnets before LCC Magnet( starting 1998) have the limitation max. 8 channels. The upgrades from 11x to 15x have new computers plus parts of gradient cabinet and system cabinet and coils. For the new 750/450 platform it is more difficult to upgrade, kompl. new hardware.
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Michael Bocian
Fri. 5 Sep.08,
22:27
[Start of:
'Siemens parameter "concatenations"'
0 Reply]
Category:
Devices, Scanner, Machines
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| Siemens parameter "concatenations" |
Please help me to understand the parameter "concatenations" on the Siemens software, both in terms of what the hardware and software is doing, and the trade offs. I'll take anything at this point!
Thanks for your help,
Michael
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