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What lesions are the easiest to spot on MRI?
Cortical and subcortical tubers are easily seen as regions of increased FLAIR signal.
True or false: Are all subependymal hamartomas calcified?
FALSE. The majority are calcified, but this is only true for older children and adults. As with all dystrophic calcification, it takes time, and as such in infants and young children calcification is not evident.
There are extensive T2 / FLAIR cortical and subcortical white matter regions of hyperintensity along with nodularity of the ventricular margins, which demonstrate signal drop out (best seen on gradient echo images) in keeping with calcification seen on CT.