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A member asked:
Is a small hyperintensity of 3mm in the cerebellum significant or can this occur in healthy individuals on a brain mri?
A doctor has provided 1 answer
No and yes: We are mostly water. MRI picks up differences in the local chemistry of water. Anything "abnormal" looks bright (hyperintense). MRI's sensitivity is higher than its specificity, meaning that it's good at picking up certain things but not as good at distinguishing between "normal" and truly "abnormal." One little bright spot in an otherwise normal brain is almost never clinically significant.
Answered 5/22/2016
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