A member asked:

Do i need mri w/o contrast before 1 w/contrast?i pd over $1000.00 to have both bc the place i went 2 said since i've never had 1 i have 2 do both

A doctor has provided 1 answer
Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

Usually yes: Contrast causes certain structures and abnormalities to "enhance"(look brighter than on the w/o contrast scan) on an MRI. This can aid greatly in the detection and diagnosis of abnormalities. Without the pre-contrast scan, it may be impossible to determine whether something enhances, because there is nothing to compare it to. So most of the time, a w/o contrast scan is necessary.

Answered 6/11/2014

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