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What are the main causes of gyriform enhancement?
Acutely reperfused cerebral infarction, subacute cerebral infarction, PRES, meningitis, and encephalitis
FLAIR and DWI sequences show linear cortical hyperintensity. T1 weighted images after venous contrast administration demonstrates cortical thickening and gyriform enhancement on the left hemisphere, predominantly on the insular and temporoparietal lobes. The perfusion slices reveal slightly augmented cerebral brain volume (CVB) on the left temporoparietal regions.