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Abstract #2713

The Communicating Arteries Redistribute Blood Flow in the Circle of Willis with Hypoplastic Segments: Intracranial 4D flow MRI at 7 Tesla

Pim van Ooij1, Matthan Caan1, Bart M. W. Cornelissen2, Henk A Marquering2, Pieter Buur3, Gustav J Strijkers2, Jeroen Hendrikse4, and Aart J Nederveen1

1Radiology, Academic Medical Center, Amsterdam, Netherlands, 2Biomedical Engineering & Physics, Academic Medical Center, Amsterdam, Netherlands, 3Spinoza Center for Neuroimaging, Amsterdam, Netherlands, 4Radiology, University Medical Center Utrecht, Utrecht, Netherlands

In this study it was investigated if the communicating arteries redistribute blood flow in the circle of Willis (coW) with hypoplastic arteries. For this purpose, 4D flow MRI at 7 Tesla was used in ten healthy volunteers. 50% of the participants had a full coW, whereas 50% had hypoplastic or missing segments. Significant correlations were found for time-averaged blood flow (mL/s) between the left /right posterior communicating artery and the left/right posterior cerebral artery and between the anterior communicating artery and the right anterior cerebral artery. This finding illustrates that flow is redistributed through the communicating arteries in the coW.

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