![]() ![]() Curvilinear hyperintensity of the cerebral cortex corresponding to laminar necrosis may be seen on T1-weighted and FLAIR images, especially if the underlying white matter was not infarcted. There is no contrast enhancement and vascular paucity is usually present in the affected area. CT and T2*WI may show chronic microhemorrhages and rarely distrophic calcifications, as bright and dark areas, respectively. Chronic infarct is also bright on ADC maps. FLAIR images show to better advantage the gliotic margins, which are bright between the CSF-like encephalomalacia and isointense normal white matter. Along the edges of the CSF-like area of encephalomalacia, there is an ill-defined rim of relatively higher CT attenuation, representing gliosis. ![]() ![]() There is shrinking and/or amputation of the cerebral parenchyma, with passive (ex vacuo) dilation of adjacent CSF-containing spaces (such as ventricles and cortical sulci). Chronic infarcts are areas of variable size, shape, and location, usually with cortical and subcortical involvement, characterized by CSF-like density on CT and signal intensity on MRI. ![]()
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