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The DWI sequence (A) and the ADC cartography (B) show a central hypointense area on DWI (high ADC value), a hyperintense circular area on DWI (low ADC) and a peripheral milder hyperintensity (upper ADC value rim). (C) Annular peripheral enhancement after gadolinium injection on T1W images. (D) Mild hypointense rim on T2*W images.
