“…Using MRI, Tanaka et al 21 showed that variations in the circle of Willis correlated significantly with the relative contributions of the flow rates of the bilateral internal carotid and basilar arteries. Also, Wachter et al 22 postulated in their case report of an aplastic internal carotid artery that hemodynamic changes may contribute to the development of intracranial aneurysms. Moreover, Hendrikse et al 23 stated that large asymmetries in volume flow between the right and left ICAs may be caused by variations in the anatomy of the circle of Willis.…”
We found that variations in the A1 segment of the ACAs are correlated with a higher prevalence of ACoA aneurysms compared with patients with a symmetric circle of Willis.
“…Using MRI, Tanaka et al 21 showed that variations in the circle of Willis correlated significantly with the relative contributions of the flow rates of the bilateral internal carotid and basilar arteries. Also, Wachter et al 22 postulated in their case report of an aplastic internal carotid artery that hemodynamic changes may contribute to the development of intracranial aneurysms. Moreover, Hendrikse et al 23 stated that large asymmetries in volume flow between the right and left ICAs may be caused by variations in the anatomy of the circle of Willis.…”
We found that variations in the A1 segment of the ACAs are correlated with a higher prevalence of ACoA aneurysms compared with patients with a symmetric circle of Willis.
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