How many days can the gyriform enhancement persist in case of infarct ?
4 weeks to 4 months
T1WI hypointense, T2WI and FLAIR hyperintense areas with cortical swelling and expansion are seen in the left temporal and parietal lobes. Few parts of the lesion show facilitated diffusion; however, few parts show diffusion restriction. No significant mass effect is seen except mild compression over the left occipital horn. After contrast administration, gyriform and peripheral enhancement are noted. No blooming is seen.
Impression: Clinical and imaging findings are consistent with a subacute infarct.