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FIG 1. MR images of two patients with ICH show the presence of a hyperintense halo on T2-weighted MR images (T2 MRI) and elevated ADC values in corresponding brain regions on diffusion-weighted images. Both characteristics are compatible with elevated interstitial tissue water content, suggestive of vasogenic brain edema. The diffusion-weighted images show regions of interest in the perihematoma tissue and in the contralateral hemisphere that were chosen for ADC analysis.
