Evidence map›Paper›PMID 41986706›Full record

ArticleClinical neuroradiology2026

Incidence of Fish-mouthing and Wall Malapposition of Different Flow Diverters in the Treatment of Cerebral Aneurysms: Device-specific Findings in a Retrospective Single-center Analysis.

Maximilian Rothe, Martin Renz, Maria Berndt-Mück, Dennis Hedderich, Dominik Sepp, Bernhard Meyer, Chiara Negwer, Jannis Bodden, Jan Kirschke, Tobias Boeckh-Behrens and 1 more

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Article in Clinical neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Maximilian RotheInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany. maximilian.rothe@tum.de.
Martin RenzInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Maria Berndt-MückInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Dennis HedderichInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Dominik SeppInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Bernhard MeyerDepartment of Neurosurgery, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Chiara NegwerDepartment of Neurosurgery, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Jannis BoddenInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Jan KirschkeInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Tobias Boeckh-BehrensInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.
Christian MaegerleinInstitute of Neuroradiology, Technical University of Munich, School of Medicine and Health, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeFlow diverter (FD) braid stability is crucial for optimal wall apposition, thereby reducing the risk of device-related complications following intracranial aneurysm treatment. We compared wall apposition characteristics across different FD designs to evaluate inter-device differences.

methodsRetrospective single-center analysis of 104 patients with 127 aneurysms treated with 121 FD (35 Derivo Embolization Devices (DED; Acandis, Pforzheim, Germany), 50 p64 (Phenox Wallaby, Bochum, Germany), 24 p48 (Phenox), 11 Silk (Balt, Montmorency, France), and 1 Pipeline (Medtronic, Dublin, Ireland)) between February 2013 and June 2023. The analysis focused on fish-mouthing-like deformities (≥ 10% focal diameter reduction at device ends) and the need for mechanical wall apposition maneuvers, as well as aneurysm occlusion, thrombus-associated events, and neurological outcomes.

resultsFish-mouthing-like deformities occurred more frequently with DED (50.0%) than with other FD-types (27.2%; p = 0.021), mainly due to "pre"-fish-mouthing (31.3% vs. 14.8%; p = 0.047). Mechanical wall apposition maneuvers were more often required in DED cases (60.0% vs. 25.6%; p < 0.001), particularly for proximal malapposition. Aneurysm occlusion rates were comparable at final FU (84.2% vs. 88.6%; p = 0.563). Thrombus-associated events occurred more frequently with DED (29.4% vs. 11.3%; p = 0.008), though neurological outcomes did not differ significantly (6.0% vs. 2.6%; p = 0.148). Mean FU time was 26.0 ± 21.0 months.

conclusionDED required more frequent intraprocedural wall apposition maneuvers and showed higher rates of fish-mouthing-like deformities compared with other FD-types. However, long-term aneurysm occlusion and neurological outcomes were comparable. These findings suggest that while DED deployment may require greater technical expertise, its safety and efficacy should be further evaluated in larger, multicenter studies.

Indexed as

Embolization, TherapeuticIntracranial AneurysmStentsAgedFemaleHumansIncidenceMaleMiddle AgedProsthesis DesignRetrospective StudiesTreatment OutcomeBraid stabilityDERIVO embolization deviceFish-mouthingFlow DiverterIntracranial aneurysmWall apposition

Identifiers

PMID41986706
PMCPMC13522061

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.