Observational evaluation demonstrates patchy profile sign identifies intracranial atherosclerotic stenosis in acute ischemic stroke, suggesting a potential marker for etiology.
Identifying the etiology of acute ischemic stroke (AIS) before endovascular treatment (EVT) is important but challenging. In CT perfusion imaging processed by perfusion software, we observed a phenomenon called patchy profile sign (PPS), that is, the hypoperfusion morphology in RAPID software is a discontinuous sheet pattern. This phenomenon is predominantly observed in patients diagnosed with intracranial atherosclerotic stenosis (ICAS). The study intends to assess whether the PPS can be used to differentiate ICAS from intracranial embolism.
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Zhang et al. (2024) studied this question.
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