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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
'Water Fat Shift'
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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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William Flemming

Tue. 29 Mar.05,
02:49

[Reply (1 of 2) to:
'MR image of an eye'
started by: 'Reader Mail '
on Tue. 14 Dec.04]


 
  Category: 
Applications and Examinations

 
MR image of an eye
Depending on the sequence and the field strength there can be artifacts that look like eye movement and are difficult to separate. To avoid eye movement should the patient not only close the eyes or fix a point, but also with closed eyes think about not to move the eyes.
Other artifacts (e.g. ghosting) can be reduced with fat suppression, reduction of the water fat shift, T1 with a long TE (to reduce the brightness of fat), and/or a higher matrix.
Also the perfect positioning of the coil and a homogeneity correction will improve the image quality. I do not know a post processing program that removes those artifacts.
Regards
Bill
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