Contrast needed to: tell scar tissue from other tissues, unfortunately. The truthful answer to your question is "gray". Scar tissue is a relatively bland gray on all sequences of a noncontrast MR. That is why contrast is recommended in patients who've had surgery. If you have MR on CD, I can review at HealthTap Concierge, healthtap.com/saurbornmd, but I may not be able to answer your question without contrast images.
Answered 3/19/2015
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