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Flow diverter stent

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https://www.readbyqxmd.com/read/28210239/flow-diversion-for-the-treatment-of-mca-bifurcation-aneurysms-a-single-centre-experience
#1
Pervinder Bhogal, Muhammad AlMatter, Hansjörg Bäzner, Oliver Ganslandt, Hans Henkes, Marta Aguilar Pérez
BACKGROUND: Intracranial aneurysms located at the bifurcation of the middle cerebral artery (MCA) can often be challenging for the neurointerventionalist. We aimed to evaluate the efficacy and safety of flow diverting stents (FDS) in the treatment of these aneurysms. MATERIALS AND METHODS: We retrospectively reviewed our prospectively maintained database to collect information for all patients with unruptured saccular bifurcation MCA aneurysms treated with FDS between January 2010 and January 2016...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28163518/double-barrel-y-configuration-stenting-for-flow-diversion-of-a-giant-recurrent-basilar-apex-aneurysm-with-the-pipeline-flex-embolization-device
#2
Dale Ding, Robert M Starke, Ben McGuinness, Stefan Brew
Giant basilar apex aneurysms are extremely challenging to successfully manage. The Pipeline Flex embolization device (PFED) is a new generation flow-diverting stent with a modified delivery system which allows resheathing of the stent after partial deployment. We describe a case of double-barrel Y-configuration stenting of a giant, recurrent basilar apex aneurysm using the PFED. A 73-year-old male was previously treated for an unruptured 11-mm basilar apex aneurysm with stent-assisted coiling using a Neuroform stent...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28155683/towards-the-patient-specific-design-of-flow-diverters-made-from-helix-like-wires-an-optimization-study
#3
Mingzi Zhang, Hitomi Anzai, Bastien Chopard, Makoto Ohta
BACKGROUND: Flow diverter (FD) intervention is an emerging endovascular technique for treating intracranial aneurysms. High flow-diversion efficiency is desired to accelerate thrombotic occlusion inside the aneurysm; however, the risk of post-stenting stenosis in the parent artery is posed when flow-diversion efficiency is pursued by simply decreasing device porosity. For improving the prognosis of FD intervention, we develop an optimization method for the design of patient-specific FD devices that maintain high levels of porosity...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28154128/lack-of-association-between-statin-use-and-angiographic-and-clinical-outcomes-after-pipeline-embolization-for-intracranial-aneurysms
#4
W Brinjikji, H Cloft, S Cekirge, D Fiorella, R A Hanel, P Jabbour, P Lylyk, C McDougall, C Moran, A Siddiqui, I Szikora, D F Kallmes
BACKGROUND AND PURPOSE: Use of statin medications has been demonstrated to improve clinical and angiographic outcomes in patients receiving endovascular stent placement for coronary, peripheral, carotid, and intracranial stenoses. We studied the impact of statin use on long-term angiographic and clinical outcomes after flow-diverter treatment of intracranial aneurysms. MATERIALS AND METHODS: We performed a post hoc analysis from pooled patient-level datasets from 3 Pipeline Embolization Device studies: the International Retrospective Study of the Pipeline Embolization Device, the Pipeline for Uncoilable or Failed Aneurysms Study, and the Aneurysm Study of Pipeline in an Observational Registry...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28133987/ruptured-intracranial-vertebral-artery-dissecting-aneurysms-an-evaluation-of-prognostic-factors-of-treatment-outcome
#5
K Urasyanandana, P Withayasuk, D Songsaeng, T Aurboonyawat, E Chankaew, A Churojana
Objective Intracranial spontaneous vertebral artery dissecting aneurysms commonly occur in the third to fifth decades of life, and are mostly associated with hypertension. Patients present with intracranial haemorrhage or thromboembolic events. Patients who present with intracranial haemorrhage carry about a 70% risk of recurrent bleeding. Patients with a posterior-inferior cerebellar artery (PICA) or ipsilateral dominant vertebral artery involve selecting which parent vessel could not be sacrificed. Recent reconstructive techniques such as stent-assisted coiling embolisation and flow-diverting stents are effective treatments of choice...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28108500/ophthalmic-artery-occlusion-after-pipeline-embolization-device-placement-with-reconstitution-of-flow-via-an-endoleak-a-report-of-two-cases
#6
Michael L Adix, Ian A Kaminsky, In Sup Choi
The Pipeline Embolization Device (PED) is a flow diverting stent used in the treatment of a wide variety of intracranial aneurysms. The device differs from traditional stents used in stent-assisted coil embolization in that it has a tighter lattice structure with smaller cell sizes designed specifically to disrupt blood flow into aneurysms rather than only to retain coils within aneurysms. While the PED has been shown to be safe and effective, it has a unique risk profile that includes side branch and perforator vessel occlusion...
January 20, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28100649/incidence-of-delivery-wire-recapture-failure-with-the-pipeline-flex-device
#7
Michael A Mooney, Karam Moon, Bradley A Gross, Andrew F Ducruet, Felipe C Albuquerque
BACKGROUND: The Pipeline Flex embolization device has several advantages over the first-generation Pipeline embolization device (Covidien, Dublin, Republic of Ireland). Despite these advantages, we have observed frequent difficulty in recapturing the device's delivery wire. OBJECTIVE: To prospectively document the incidence of failure to recapture the delivery wire. METHODS: We tracked our experience in patients undergoing endovascular treatment with a flow-diverting stent for cerebral aneurysms between 1 May and 30 September 2016...
January 18, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28057633/compacting-a-single-flow-diverter-versus-overlapping-flow-diverters-for-intracranial-aneurysms-a-computational-study
#8
R J Damiano, V M Tutino, N Paliwal, D Ma, J M Davies, A H Siddiqui, H Meng
BACKGROUND AND PURPOSE: Locally compacting the mesh of a flow diverter by a dynamic push-pull technique can accelerate intracranial aneurysm healing. We asked how this deployment strategy compares with overlapping 2 flow diverters for aneurysmal flow reduction. MATERIALS AND METHODS: Using a high-fidelity virtual stent placement method, we simulated 3 flow-diverter strategies (single noncompacted, 2 overlapped, and single compacted) in 3 aneurysms (fusiform, large saccular, and medium saccular)...
January 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#9
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#10
Jeffrey Siewerdsen, Rebecca Fahrig
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047800/we-de-207a-01-parallels-in-the-evolution-of-x-ray-angiographic-systems-and-devices-used-for-minimally-invasive-endovascular-therapy
#11
C Strother
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047144/we-de-207a-02-advances-in-cone-beam-ct-anatomical-and-functional-imaging-in-angio-suite-to-enable-one-stop-shop-stroke-imaging-workflow
#12
G Chen
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046482/we-de-207a-03-recent-advances-in-devices-used-in-neuro-interventions
#13
M Gounis
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28029187/off-label-uses-for-flow-diversion-in-intracranial-aneurysm-management
#14
Fawaz Al-Mufti, Krishna Amuluru, Gomez Francisco, Vincent Dodson, Mohammad El-Ghanem, Charles J Prestigiacomo, Chirag D Gandhi
Treatment of complex aneurysms using microsurgical and other conventional neuroendovascular techniques remains challenging. As a result, stent- and balloon-assisted coiling are instead performed to treat morphologically complex aneurysms, which include giant, wide-necked, and fusiform aneurysms. While these techniques have had success in treating these complex aneurysms, recanalization rates associated with these techniques are still problematic. In the constant effort to improve the outcome of complex aneurysm treatment, flow-diverting stents (FDSs) have emerged in recent years as the preferred treatment...
December 28, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27979794/middle-cerebral-artery-bifurcation-aneurysms-treated-by-extrasaccular-flow-diverters-midterm-angiographic-evolution-and-clinical-outcome
#15
C Iosif, C Mounayer, K Yavuz, S Saleme, S Geyik, H S Cekirge, I Saatci
BACKGROUND AND PURPOSE: Flow diverters have been increasingly used lately in off-label, distal intracranial aneurysm treatments. Our aim was to evaluate the effectiveness of flow diverters in the treatment of middle cerebral artery bifurcation aneurysms and to analyze midterm angiographic patterns of regional flow modifications for safety and clinical outcomes. MATERIALS AND METHODS: Consecutive patients treated from January 2010 to December 2014 by the authors by using endovascular flow-diverting stents for MCA bifurcation aneurysms were evaluated retrospectively with prospectively maintained data...
December 15, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27977003/single-stage-endovascular-treatment-of-multiple-intracranial-aneurysms-with-combined-endovascular-techniques-is-it-safe-to-treat-all-at-once
#16
Cagatay Andic, Fatih Aydemir, Ozgur Kardes, Murat Gedikoglu, Sule Akin
BACKGROUND AND PURPOSE: Multiple aneurysms have a high reported incidence, but the optimal treatment strategy is not clear. The aim of this study was to evaluate the safety and effectiveness of single-stage endovascular treatment of multiple aneurysms with a combination of various endovascular techniques. MATERIALS AND METHODS: Fifty-three consecutive patients with multiple intracranial aneurysms who underwent single-stage endovascular treatment for ≥2 aneurysms from June 2011 to May 2016 were included in the study...
November 14, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27956518/use-of-self-expanding-stents-for-better-intracranial-flow-diverter-wall-apposition
#17
Anna Luisa Kühn, Ajay K Wakhloo, Matthew J Gounis, Peter Kan, Katyucia de Macedo Rodrigues, J Diego Lozano, Miklos G Marosfoi, Mary Perras, Christopher Brooks, Mary C Howk, David E Rex, Francesco Massari, Ajit S Puri
BACKGROUND: Flow diverter (FD) malapposition is associated with stroke-related complications. We document the use of self-expanding nitinol stents to remove/reduce the ledge of a FD deployed for aneurysm treatment. METHODS: We identified five patients who were treated with the Pipeline embolization device (PED) in conjunction with a Neuroform EZ stent for inadequate wall apposition of the ends of the FD at our institution between May 2014 and July 2015. Among other parameters, angiographic results, cone-beam computed tomography assessment of wall apposition and patient clinical outcome were evaluated...
December 12, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27942770/management-of-unruptured-saccular-aneurysms-of-the-m1%C3%A2-segment-with-flow-diversion-a%C3%A2-single-centre-experience
#18
Pervinder Bhogal, Rosa Martinez, Oliver Gansladt, Hansjörg Bäzner, Hans Henkes, Marta Aguilar
PURPOSE: The optimal strategy for the treatment of M1 segment aneurysms has not yet been determined as both standard microneurosurgical and endovascular techniques can pose challenges. We sought to determine the efficacy of flow diverting stents to treat small, unruptured aneurysms of the M1 segment. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated with flow diversion for an unruptured saccular aneurysm of the middle cerebral artery (MCA) between February 2009 and February 2016...
December 11, 2016: Clinical Neuroradiology
https://www.readbyqxmd.com/read/27932668/quantitative-flow-measurement-after-placing-a-flow-diverter-for-a-distal-internal-carotid-artery-aneurysm
#19
Chien-Wei Chen, Ho-Fai Wong, Yu-Ling Ye, Yao-Liang Chen, Wei-Liang Chen, Chang-Hsien Ou, Yuan-Hsiung Tsai
OBJECTIVES: To evaluate the differences in arterial flow after flow diverter placement using quantitative flow measurements based on digital subtraction angiography (DSA). METHODS: Between November 2013 and November 2015, all patients who had flow diverters placed for distal internal carotid artery (ICA) aneurysms were reviewed. Patients in whom the stent was placed across the ostia of the ophthalmic artery (OphA) and anterior choroidal artery (AChA) were enrolled...
December 8, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27904445/endovascular-treatment-of-unruptured-aneurysms-of-cavernous-and-ophthalmic-segment-of-internal-carotid-artery-with-flow-diverter-device-pipeline
#20
Marko Jevsek, Charbel Mounayer, Tomaz Seruga
BACKGROUND: Intra-arterial treatment of aneurysms by redirecting blood flow is a newer method. The redirection is based on a significantly more densely braided wire stent. The stent wall keeps the blood in the lumen of the stent and slows down the turbulent flow in the aneurysms. Stagnation of blood in the aneurysm sac leads to the formation of thrombus and subsequent exclusion of the aneurysm from the circulation. The aim of the study was to evaluate flow diverter device Pipeline for broad neck and giant aneurysm treatment...
December 1, 2016: Radiology and Oncology
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