Measurement of proximal cerebral inflow volume and individual cerebral angio-architecture are crucial for patient-specific analysis of hemodynamic effects of cerebrovascular disease. However, the detail of bilateral ICA flow in individuals of complete but asymmetric COW is lacking. This retrospective study included total 210 healthy adult for delineation of the relationship between detailed COW variations and bilateral ICA flow volume in healthy adults. Furthermore, the correlation of ICA diameter to ICA flow in the setting of circle of Willis variants was also proposed.
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