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MRI is trending to low field magnets :
reduced costs will lead to this change 
AI will close the gap to high field 
only in remote areas 
is only temporary 
never 
 
MRI Forum
'Meter'
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Renate Bloemer

Mon. 13 Nov.06,
19:29

[Reply (1 of 2) to:
'T1 FAT SAT PRE AND POS GADO'
started by: 'CLAUDIO RIBERTI'
on Tue. 24 Oct.06]

 
  Category: 
Contrast Agents
 
T1 FAT SAT PRE AND POS GADO
The contrast agent causes this difference. Contrast agents reduce the T1 time in tissues where they have accumulated depending on blood flow and vascular permeability. Caused by this, tissues after an application of contrast agents will differ in shortening of the T1 time, and the same imaging parameters result in other image appearance.
Some helpful links for musculoskeletal imaging and Fat Sat:
http://www.moffitt.org/moffittapps/ccj/v8n3/pdf/221.pdf
http://www.medical.siemens.com/siemens/en_US/gg_mr_FBAs/files/MRI_Hot_Topics/MRI_HotTopics_Skinny_on_FatSat_engl.pdf

Hope this helps
 
 

Renate Bloemer
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Marco Costa

Sun. 22 Oct.06,
10:27

[Start of:
'MRA'
2 Replies]

 
  Category: 
Protocols
 
MRA
Hello!

Is my first time in this forum! I read it a lot this forum, is very helpfull for my job!

I have a dificult in my mri machine.

First i would like to now how can i construct a bolus teste manualy! I don't have smart prep. What sequence i must use and what parameters i must choose.

Second, can you expline to me the diference between centric fill of K-space and non centric?

When is the best time to star the sequence after take the time injection.

My regards
Marco Costa
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Reader Mail

Sun. 21 May.06,
13:53

[Reply (1 of 3) to:
'What Philips calls bandwidth'
started by: 'Anne Nelson'
on Thu. 4 May.06]

 
  Category: 
General
 
What Philips calls bandwidth
The corresponding term is the water fat shift and can be changed in the contrast parameter table.
Lower bandwidth = higher water fat shift
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Shaun Schofield

Thu. 30 Mar.06,
04:07

[Start of:
'ETL for a STIR'
2 Replies]

 
  Category: 
Sequences and Imaging Parameters
 
ETL for a STIR
Whats the ETL range for a STIR? Assuming 50TE 5000TR 150TI.

Does it follow the T2 parameters? Can someone give me the pros/cons of high versus low ETL?
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Shaun Schofield

Thu. 30 Mar.06,
04:04

[Start of:
'ZIP512'
2 Replies]

 
  Category: 
Sequences and Imaging Parameters
 
ZIP512
What are the optimum parameters when using ZIP512 (ie; even nex? square matrix?)
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