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| Result: Searchterm 'HIS'
found in 303 messages |
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More Results:  Database (430) News Service (375) Resources (57) |
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Dan McGuan
Thu. 6 Oct.05,
20:35
[Reply (1 of 2) to:
'Machine Opening artifact'
started by: 'Neil Brice'
on Tue. 28 Sep.04]
 Category:
Artifacts
|
| Machine Opening artifact |
Neil,
I think you're talking about the edges of the shimmed volume of the magnet, or the coil.
Magnets are shimmed to a specific volume in the field (every model magnet is different). When you attempt to scan an object that reaches the edge of this volume you will see distortion from imaging the unshimmed area of the magnet.
Also shimming large objects that exceed the range of the receiver portion of the coil will cause distortions.
Hopefully this answers your question?
Good Luck,
Dan McGuan
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|  View the whole thread | | |
Dan McGuan
Thu. 6 Oct.05,
20:24
[Reply (1 of 2) to:
'mri room specs'
started by: 'thomas sagun'
on Thu. 18 Aug.05]
Category:
Site Planning and Specifications
|
| mri room specs |
Thomas,
Regarding room specs, if you are buying new equipment the manufacturer will provide all of this to you at no additional charge.
If you are considering preowned systems it is a little more difficult. You would need to find a company that specializes in the particular type of open system that you are considering. A word of caution would be that most people will tell you that they know the systems inside and out. Be careful and check the credentials of the service provider and ensure that they do in fact know the system you are considering. Also it is always a good idea to talk with some of their clients to get feedback on work that the company has performed.
If you are considering a Hitachi Open MRI, my company can help you out. We are in fact experts on these systems. If you want to talk about your project visit our website at viablemed.net and use our contact page to reach us.
Good Luck,
Dan McGuan
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| | View the whole thread | | |
Susan Angelico
Thu. 15 Sep.05,
20:07
[Reply (1 of 3) to:
'3T imaging parameters'
started by: 'Nancy Dudek'
on Fri. 26 Aug.05]
Category:
Sequences and Imaging Parameters
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| 3T imaging parameters |
At 3T the T1 time is longer (so the TR should also be longer) and the T2 time is shorter (TE can be shorter). However, when we got a 3T machine we tested different TR and TE's and found out that in practice the useful range don't has a big difference from that of a 1.5T MR system.
The contrast looks a bit different - that's normal.
In addition, ask the manufacturer.
There are a lot of other parameters that affect the contrast in 3T.
Hope this will help
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| | View the whole thread | | |
purna chander reddy
Sun. 11 Sep.05,
14:46
[Reply (3 of 6) to:
'Brain Protocol'
started by: 'Oscar Cidri'
on Tue. 7 Sep.04]
Category:
Protocols
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| Brain Protocol |
hai
according to pt histry we went for seq for brain routine
T2,FLAIR,T1 TRANSVERSAL
T1 SAGITALS
T2,IR CORONOL
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| | View the whole thread | | |
Nancy Dudek
Fri. 26 Aug.05,
00:25
[Start of:
'3T imaging parameters'
2 Replies]
Category:
Sequences and Imaging Parameters
|
| 3T imaging parameters |
Hi
Am looking for the ranges of acceptable TR and TE's for standard spin echo and gradient echo sequences on a 3T.
Does anyone know these or tell me where I can find this info?
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