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Flow diverte stent

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https://www.readbyqxmd.com/read/29909212/flow-diversion-via-lvis-blue-within-an-enterprise-in-patients-with-vertebral-artery-dissecting-aneurysm
#1
Yong Cheol Lim, Yong Sam Shin, Joonho Chung
A new Low-profile Visualized Intraluminal Support device (LVIS Blue) is a braided stent that provides a higher degree of metal coverage. This stent may be beneficial for complete obliteration of an aneurysm due not only to its support of a higher occlusion rate using coils inside of the aneurysm but also to its flow diverting effect. We introduce and describe a new flow diversion technique using an LVIS Blue-within-an-Enterprise for patients with vertebral artery (VA) dissecting aneurysms. A 6-Fr guiding catheter was positioned in the ipsilateral VA...
June 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29893989/neurovascular-stent-artifacts-in-3d-tof-and-3d-pcmri-influence-of-stent-design-on-flow-measurement
#2
Pierre Bouillot, Olivier Brina, Bénédicte M A Delattre, Rafik Ouared, Alain Pellaton, Hasan Yilmaz, Paolo Machi, Karl-Olof Lovblad, Mohamed Farhat, Vitor Mendes Pereira, Maria Isabel Vargas
PURPOSE: The morphological and hemodynamic evaluations of neurovascular diseases treated with stents would benefit from noninvasive imaging techniques such as 3D time-of-flight MRI (3D-TOF) and 3D phase contrast MRI (3D-PCMRI). For this purpose, a comprehensive evaluation of the stent artifacts and their impact on the flow measurement is critical. METHODS: The artifacts of a representative sample of neurovascular stents were evaluated in vitro with 3D-TOF and 3D-PCMRI sequences...
June 12, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29850376/surgical-reconstruction-to-allow-endovascular-access-for-flow-diversion-of-giant-cavernous-aneurysm-a-combined-approach
#3
Visish M Srinivasan, Ascher Kaufmann, Peter Kan, Edward A Duckworth
Giant cavernous aneurysms of the internal carotid artery (ICA) are challenging lesions associated with high surgical morbidity. Prior to the past several years, these were treated by surgical reconstruction, proximal ligation, or stent-assisted coiling techniques. Flow diversion has become the standard of care for these lesions, providing a high rate of obliteration with a much better safety profile. However, flow diverters rely upon a navigable vasculature and, usually, a tri-axial support system. Cases in which such access is difficult require unique approaches to combine the strengths of both surgical and endovascular therapy...
March 28, 2018: Curēus
https://www.readbyqxmd.com/read/29848557/safety-and-efficacy-of-the-derivo-embolization-device-for-the-treatment-of-unruptured-intracranial-aneurysms-a-multicentric-study
#4
Bastian Kraus, Lukas Goertz, Bernd Turowski, Jan Borggrefe, Marc Schlamann, Franziska Dorn, Christoph Kabbasch
BACKGROUND: The Derivo Embolization Device (DED) is a novel flow diverter stent that provides increased x-ray visibility, an improved delivery system, and potentially reduced thrombogenicity. The objective of this study was to evaluate the early safety and efficacy of the second-generation DED. METHODS: We retrospectively analyzed all patients with unruptured intracranial aneurysms (UIAs) treated with the DED between November 2015 and December 2017 in three German tertiary care centers...
May 30, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29807446/the-use-of-flow-diverters-to-treat-aneurysms-of-the-posterior-inferior-cerebellar-artery-report-of-three-cases
#5
Pervinder Bhogal, Jorge Chudyk, Carlos Bleise, Ivan Lylyk, Hans Henkes, Pedro Lylyk
Objective The objective of this study was to report our experience on the use of flow diverting stents placed within the posterior inferior cerebellar artery (PICA) as a treatment option for aneurysms of the PICA. Methods Three patients with aneurysms of the PICA, both ruptured and unruptured, underwent treatment of their aneurysms with placement of a single flow diverter in the PICA across the neck of the aneurysm. Adjunctive techniques such as coiling were not used. We present the angiographic and clinical follow-up data...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29804090/preliminary-outcomes-of-single-antiplatelet-therapy-for-surface-modified-flow-diverters-in-an-animal-model-analysis-of-neointimal-development-and-thrombus-formation-using-oct
#6
Yoshikazu Matsuda, Dong-Kyu Jang, Joonho Chung, John Michael Wainwright, Demetrius Lopes
OBJECTIVE: To evaluate the rate of neointimal development and thrombus formation of surface-modified flow diverters in single antiplatelet therapy (SAPT) using optical coherence tomography (OCT) in a porcine model. METHODS: We divided 10 experimental pigs into two groups. One group (n=6) received dual antiplatelet therapy (DAPT) and the other group (n=4) received SAPT. Four stents (two per carotid artery) were implanted in both groups. The stents used were the Pipeline Flex embolization device (PED Flex), Pipeline Flex with Shield technology (PED Shield), and the Solitaire AB stent...
May 26, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29795088/-resection-and-correction-of-the-common-carotid-artery-to-enable-an-endovascular-approach-for-treatment-of-a-giant-ica-aneurysm-a-case-report-and-literature-review
#7
D Yu Usachev, V A Lukshin, K G Mikeladze, S B Yakovlev
The article reports a clinical case of endovascular treatment of a female patient with a giant aneurysm of the cavernous internal carotid artery complicated by gross ipsilateral bending of the proximal third of the common carotid artery. To ensure an adequate endovascular approach to the aneurysm, open repair of the common carotid artery and elimination of its bending were performed at the first stage. This enabled successful placement of a flow-diverting stent into the internal carotid artery at the aneurysm level at the second stage, resulting in good technical and clinical outcomes...
2018: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/29783867/virtual-stenting-of-intracranial-aneurysms-a-pilot-study-for-the-prediction-of-treatment-success-based-on-hemodynamic-simulations
#8
Philipp Berg, Sylvia Saalfeld, Gábor Janiga, Olivier Brina, Nicole M Cancelliere, Paolo Machi, Vitor M Pereira
Endovascular treatment of intracranial aneurysms using flow-diverting devices has revolutionized the treatment of large and complex lesions due to its minimally invasive nature and potential clinical outcomes. However, incomplete or delayed occlusion and persistent intracranial aneurysm growth are still an issue for up to one-third of the patients. We evaluated two patients with intracranial aneurysm located at the internal carotid artery who were treated with flow-diverting devices and had opposite outcomes...
May 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29778996/stent-and-flow-diverter-assisted-treatment-of-acutely-ruptured-brain-aneurysms
#9
José E Cohen, J Moshe Gomori, Ronen R Leker, Sergey Spektor, Hosni Abu El Hassan, Eyal Itshayek
OBJECTIVE: We present our experience with stent techniques in the management of acutely ruptured aneurysms, focusing on aneurysm occlusion rates, intraprocedural complications, and late outcomes. METHODS: We retrospectively reviewed the clinical records of patients treated by stent techniques during the early acute phase of aneurysmal rupture, from June 2011 to June 2016. Patients who underwent stenting for the management of unruptured aneurysms, or in a delayed fashion for a ruptured lesion, were excluded...
May 19, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29720021/silk-flow-diverter-stent-for-the-treatment-of-complex-intracranial-aneurysms-a-one-year-follow-up-multicenter-study
#10
G Foa Torres, F Roca, A Noguera, J Godes, S Petrocelli, I Aznar, S Ales, P Muszynski, R Maehara, M Vicente, J M Pumar
Background Flow-diverter stents have been successfully used in the treatment of complex aneurysms with limited therapeutic alternatives. We report our experience using the Silk flow diverter (SFD; Balt Extrusion, Montmorency, France) for the treatment of complex aneurysms in four Argentine centers. Methods We conducted a retrospective review of 246 consecutive patients who were treated with the SFD at four Argentine centers between January 2009 and January 2017. The patient and aneurysm characteristics, as well as the details of the procedure, were analyzed...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29698879/use-of-pipeline%C3%A2-embolization-device-for-the-treatment-of-traumatic-intracranial-pseudoaneurysms-case-series-and-review-of-cases-from-literature
#11
Mairaj T Sami, Domenico A Gattozzi, Hesham M Soliman, Alan R Reeves, Christopher J Moran, Paul J Camarata, Koji C Ebersole
OBJECTIVE: Intracranial traumatic pseudoaneurysms (PSA) are a rare but dangerous subtype of cerebral aneurysm. Reports documenting use of flow-diverting stents to treat traumatic intracranial PSAs are few and lack long-term follow-up. To our knowledge, this is the largest case-series to date demonstrating use of Pipeline Endovascular Device (PED) for traumatic intracranial PSAs. PATIENTS AND METHODS: Retrospective review of 8 intracranial traumatic PSAs in 7 patients treated using only PED placement...
June 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29695603/intermediate-catheter-placement-distal-to-the-cerebral-aneurysm-during-flow-diversion-embolization-with-the-surpass-device
#12
Osman Melih Topcuoglu, Anil Arat, Ahmet Peker, Basar Sarikaya
PURPOSE: We present the preliminary angiographic and clinical results of the combined utilization of an AXS Catalyst 5 (Cat5) distal access catheter and a Surpass flow diverter (SFD) for the endovascular treatment of intracranial aneurysms. MATERIALS AND METHODS: Interventional neuroradiology case records were evaluated retrospectively to identify patients treated with an SFD in combination with Cat5. Demographic data, technical success, location of the catheter tip, aneurysm occlusion rate, and procedure-related morbidity and mortality were noted...
April 25, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29684517/nickel-related-adverse-reactions-in-the-treatment-of-cerebral-aneurysms-a-literature-review
#13
REVIEW
Anderson Chun On Tsang, Patrick Nicholson, Vitor Mendes Pereira
BACKGROUND: Nickel is the most common metal allergen and predominantly affects women. It is also the ubiquitous component in the alloys used to manufacture intracranial devices for aneurysm treatments, including aneurysm clips, self-expanding stents, flow-diverting stents and endosaccular occlusion devices. Adverse events related to nickel-allergy after deployment of such devices are uncommon but can be severe, resulting in dilemmas in the choice of treatment strategies and devices in managing nickel-sensitive patients with intracranial aneurysms...
April 20, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29682009/the-effect-of-stents-in-cerebral-aneurysms-a-review
#14
REVIEW
Kenan Alkhalili, Jack Hannallah, Mary Cobb, Nohra Chalouhi, Jessica L Philips, Angela B Echeverria, Pascal Jabbour, M Haithem Babiker, David H Frakes, L Fernando Gonzalez
The etiology of up to 95% of cerebral aneurysms may be accounted for by hemodynamically-induced factors that create vascular injury. The purpose of this review is to describe key physical properties that stents have and how they affect cerebral aneurysms. We performed a two-step screening process. First, a structured search was performed using the PubMed database. The following search terms and keywords were used: "Hemodynamics," "wall shear stress (WSS)," "velocity," "viscosity," "cerebral aneurysm," "intracranial aneurysm," "stent," "flow diverter," "stent porosity," "stent geometry," "stent configuration," and "stent design...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29675721/fenestration-of-the-supraclinoid-segment-of-the-ica-and-associated-aneurysms-a-case-report-with-literature-review
#15
Alessandro Sgreccia, Oguzhan Coskun, Federico Di Maria, Georges Rodesch, Arturo Consoli
The supraclinoid ICA fenestration (SIF) is considered an extremely rare congenital anomaly. However, most of the reported cases of SIF are associated with intracranial aneurysms either ruptured or unruptured. We report the case of a 55-year-old patient with a right SIF and an unruptured, large, wide-necked aneurysm located on the larger limb of the fenestration and a second small aneurysm distal to the SIF. The aneurysms were treated with a Pipeline flow-diverter stent, achieving the complete reconstruction of the anatomy of the carotid siphon...
June 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29651585/ruptured-fusiform-aneurysm-of-the-anterior-spinal-artery-successful-treatment-with-flow-diverter-stent-placed-in-the-feeding-vertebral-artery
#16
C P Simon-Gabriel, H Urbach, S Meckel
No abstract text is available yet for this article.
April 12, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29650782/treatment-of-distal-anterior-cerebral-artery-aneurysms-with-flow-diverter-stents-a-single-center-experience
#17
F Cagnazzo, M Cappucci, C Dargazanli, P-H Lefevre, G Gascou, C Riquelme, A Bonafe, V Costalat
BACKGROUND AND PURPOSE: Flow diversion for aneurysms beyond the circle of Willis is still debated. Our aim was to evaluate the safety and efficacy of flow diversion treatment of distal anterior cerebral artery aneurysms. MATERIALS AND METHODS: Consecutive patients with distal anterior cerebral artery aneurysms treated from January 2014 to October 2017 were evaluated retrospectively with prospectively maintained data. Treatment was performed only for unruptured or recanalized aneurysms after coiling...
April 12, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29644398/stent-placement-in-patients-with-acute-subarachnoid-haemorrhage-when-is-it-justified
#18
Andrew G Murchison, Victoria Young, Tanja Djurdjevic, Martino Cellerini, Rufus Corkill, Wilhelm Küker
PURPOSE: Endovascular stents are widely used for the elective treatment of cerebral aneurysms. Acute stenting is performed in the management of dissections, pseudo-aneurysms, broad-based aneurysms or as a 'bail out' measure after coil migration. The purpose of this study is to review the safety of using stents in acute subarachnoid haemorrhage. METHODS: The stent registry of our institution was reviewed for procedures in patients with acute subarachnoid haemorrhage...
April 11, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29599173/parent-artery-reconstruction-for-large-or-giant-cerebral-aneurysms-using-the-tubridge-flow-diverter-a-multicenter-randomized-controlled-clinical-trial-parat
#19
J-M Liu, Y Zhou, Y Li, T Li, B Leng, P Zhang, G Liang, Q Huang, P-F Yang, H Shi, J Zhang, J Wan, W He, C Liang, G Zhu, Y Xu, B Hong, X Yang, W Bai, Y Tian, H Zhang, Z Li, Q Li, R Zhao, Y Fang, K Zhao
BACKGROUND AND PURPOSE: Although flow diverters have been reported with favorable clinical and angiographic outcomes in various literatures, randomized trials determining their true effectiveness and safety are still in lack. The Parent Artery Reconstruction for Large or Giant Cerebral Aneurysms Using the Tubridge Flow Diverter (PARAT) trial was designed to evaluate the safety and efficacy of the Tubridge flow diverter in the treatment of large or giant aneurysms in comparison with Enterprise stent-assisted coiling...
May 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29572267/long-term-visual-outcome-in-patients-treated-by-flow-diversion-for-carotid-ophthalmic-aneurysms
#20
Romain Touzé, Valérie Touitou, Eimad Shotar, Joseph Gabrieli, Mehdi Drir, Bertrand Mathon, Nader-Antoine Sourour, Frédéric Clarençon
BACKGROUND: Flow-diverter stents (FDSs) are an upgrade in the treatment of intracranial aneurysms. However, complications concerning covered branches have been reported, especially the ophthalmic artery (OA). The purpose of our study was to evaluate the long-term ophthalmic complication rate of carotid-ophthalmic aneurysms (COA) without visual pathways compression, treated by a FDS covering the OA by performing an exhaustive ophthalmic examination. MATERIAL AND METHODS: Retrospective analysis of a single-center database screening the patients treated from October 2009 to April 2015 for an intracranial aneurysm with a FDS...
March 23, 2018: Journal of Neurointerventional Surgery
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