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. 2021 Oct 25;12:651465. doi: 10.3389/fneur.2021.651465

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Copyright © 2021 Zhang, Shao, Chang, Zhang, He, Andrade-Barazarte, Sheng, Mo, Zemmar, Li and Li.

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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Illustrations of angiographic results in a case treated by pipeline flex embolization device (PED flex) adjunctive with coils (A–C) and a case treated by PED flex alone (D–F). Aneurysms were pointed out with arrows. (A–C) An aneurysm treated by PED + coil at pre-treatment, post-treatment, and follow-up. The angiography results showed that the aneurysm was cured completely after operation at 6 months. (D–F) An aneurysm treated by PED flex at pre-treatment, post-treatment, and follow-up. This aneurysm was incompletely occluded and was classified as Raymond III at 6 months.