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. 2019 Aug 2;11:199. doi: 10.3389/fnagi.2019.00199

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Copyright © 2019 Sartoretti, Wyss, Sartoretti, Reischauer, Hainc, Graf, Binkert, Najafi and Sartoretti-Schefer.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Normal aqueduct with even width in a 70-year-old male subject on the sagittal 3D T₂w TSE DRIVE sequence (A). Grayscale encoded flow direction with hyperintense caudocranial (B) and hypointense craniocaudal (C) flow direction.