Assertion: ischemic penumbra | /r/LocatedNear | ischemic core.[sup
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text: The ischemic penumbra is functionally impaired, yet still viable, tissue surrounding the ischemic core.[sup], Several studies have indicated that for the purpose of defining the tissue at risk of infarction, the ischemic penumbra can be operationally defined as the mismatch between the lesion volumes detected with PWI and that detected with DWI.[sup],