Q.All are true regarding cortical tuber in tuberous
sclerosis except
a. tuberlike, misshapen gyri
b.prone to
calcification.
b.contain unusually large cells
c.the “gyral core” appearance on T2W and the
“sulcal island” on T1W
d.only rarely show contrast enhancement
e. seen in cerebellum
ANS.---c
The cortical tuber show “gyral core” appearance on T1-weighted MR and the “sulcal island” on T2-weighted.
The characteristic gyral core is an isointense expanded gyrus of gray matter surrounding a central hypointense white matter center, and the sulcal island is both a geometric and signal intensity inversion of the gyral core—the subcortical white matter is abnormally bright and surrounds a sulcus with its gray matter borders of normal intensity
The abnormal hamartomatous tissue of
the cortical tubers usually has prolonged T1 and T2, and so they are bright on
T2-weighted images.
The abnormal hamartomatous tissue of
the cortical tubers usually has prolonged T1 and T2, and so they are bright on
T2-weighted images.
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