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Old 03-25-2012
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Question Which Imaging to diagnose MS?

A relatively small plaque of demyelination, such as might occur in multiple sclerosis, should be evident on which of the following?

a. T1-weighted MRI
b. T2-weighted MRI
c. Precontrast CT
d. Diffusion-weighted MRI
e. PET
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jahn77 (03-26-2012)



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Old 03-26-2012
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Seems to be DIT
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Old 05-04-2012
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Default Which Imaging to diagnose MS?

First Aid has a picture of a T2 Weighted MRI showing a plaque in MS...

Does that mean T2 weighted is the correct answer??
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Old 05-04-2012
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MRI in MS usually this done with gadolinium
The T2-weighted (MRI) scan shows the total number of lesions (lesion load) and disease burden, These are hyperintense lesions in acute setting, also can show older, inactive lesions

The T1-weighted (MRI) scan shows which are areas of permanent axonal damage or Edema, These are hypodense lesions
and enhanced with Gadolinium

if u see the criteria u can't dx the disease just based on one active lesion
u need multiple lesions with time apart

but this (( Increased T2 and decreased T1 intensity represent the increased water content of demyelinated plaques in the cerebrum and spine)) is virtually dx

T2 do not reveal new lesions as accurately as T1 scans.

Regular T2 MRIs can be important for tracking long-term disease progression.

DW-MRI is for detection of early stroke

PET for METastasis

Last edited by bisho; 05-04-2012 at 11:05 AM.
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