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T1-weighted midsagittal images obtained at baseline visit in a 8.6-year old healthy girl (a), 10.2 -year old boy with ALL (b), and a 8.5-year old girl diagnosed with medulloblastoma (c; surgical resection included posterior vermis). Ant – anterior vermis, lobules I–V; postVI–VII– posterior vermis, lobules VI–VII, postVIII–X– posterior vermis, lobules VIII–X.
