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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
'Flow Void'
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Sun. 27 Jan.08,
08:47

[Start of:
'Plz Answer this ... Contrast MRI of Brain'
1 Reply]


 
  Category: 
Applications and Examinations

 
Plz Answer this ... Contrast MRI of Brain
Pre and Post contrast mri of the brain was performed in multiple planes using T1 & T2 W spin-echo sequence.

There is small ring enhancing lesion in the left occipitoparietal lobe which measures 1cm in diameter.It reveals isointense periphery on T1 & T2W images with hyperintense core on T2W images. On T1W images the core appears hypointense . A tiny mural nodule is seen within the lesion. focal perilesional edema is seen appearing hyperintense on FLAIR and T2W images.



The brainstem & cerebellum are normal.
The ventricular system is normal.
No abnormal meningeal enhancement is seen.
Intracranial vessels display normal flow void.


What needs to be done?? How serious the problem is??
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Tom Bellini

Mon. 14 Jun.04,
01:57

[Reply (1 of 3) to:
'Black Blood MRA'
started by: 'ranran zhao'
on Sun. 6 Jun.04]


 
  Category: 
Applications and Examinations

 
Black Blood MRA
The black blood effect is a natural high contrast between blood and myocardium caused by the flow void of blood. Black blood techniques are for example used to demonstrate fatty infiltration of the right ventricular wall with right ventricular dysplasia. Black blood MRA is usual based on fast spin echo or inversion recovery sequences and seldom used as cine imaging. The advantage of this type of sequence consists of being less sensitive to respiratory and cardiac motion. Bright blood cine imaging is the standard method, but there are manufacturer with different techniques, e.g. Toshiba has a black blood cine technique.
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