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. 2016 Dec 5;7:219. doi: 10.3389/fneur.2016.00219

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Copyright © 2016 Tian, Zhang, Jing, Liu, Zhang and Yang.

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) or licensor 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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A 43-year-old female manifested severe headache. First column (A,B): CT showed subarachnoid hemorrhage. Second column (C,D): the 3D-DSA images presented with two aneurysms on the left ICA C7 (ruptured) and right ICA C7 (unruptured). Third column (E,F): wall shear stress (WSS) distribution. The ruptured aneurysms (E) had significantly lower WSS than the unruptured aneurysms (F). Fourth column (G,H): velocity streamlines showing the flow pattern of the aneurysms. The flow patterns of the two aneurysms were simple at peak systole.