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. 2022 Sep 6;33(2):343–351. doi: 10.1007/s00062-022-01214-6

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Three illustrative cases. a Subtracted AP view of an unruptured aneurysm of the supraophthalmic internal carotid artery (black arrow). b Subtracted and unsubtracted magnified view after coiling and Pipeline Vantage implantation with evidence of in-stent apposition thrombi (white arrows). c Subtracted magnified view after i.v. tirofiban demonstrating complete thrombus dissolvement within the stent. d Subtracted lateral view of a supraophthalmic aneurysm. e Subtracted and unsubtracted magnified view after FRED implantation. Thrombosis of the covered ophthalmic artery (white arrows). f Subtracted magnified view after i.v. tirofiban demonstrating complete thrombus dissolvement. g Subtracted lateral view of an unruptured saccular pericallosal aneurysm (black arrow). h Subtracted and unsubtracted magnified view after FRED Jr. implantation with partially occlusive thrombus visualized at the proximal end in correspondence to the transition zone of the flared ends with the flow diverting segment of the stent (white arrow). i Subtracted magnified view after i.v. tirofiban demonstrates complete thrombus dissolvement