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Flow diverter OR flow diverting OR flow diversion AND aneurysm

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https://www.readbyqxmd.com/read/28056454/collar-sign-in-incompletely-occluded-aneurysms-after-pipeline-embolization-evaluation-with-angiography-and-optical-coherence-tomography
#1
C J Griessenauer, R Gupta, S Shi, A Alturki, R Motiei-Langroudi, N Adeeb, C S Ogilvy, A J Thomas
BACKGROUND AND PURPOSE: Flow diversion with the Pipeline Embolization Device has emerged as an attractive treatment for cerebral aneurysms. Processes involved in aneurysm occlusion include changes in intra-aneurysmal hemodynamics and endothelialization of the device. Here, we call attention to a radiographic sign not previously reported that is detected in incompletely occluded aneurysms after treatment with the Pipeline Embolization Device at angiographic follow-up and referred to as the "collar sign...
November 10, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28029187/off-label-uses-for-flow-diversion-in-intracranial-aneurysm-management
#2
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/28017223/parent-vessel-occlusion-for-treatment-of-cerebral-aneurysms-is-there-still-an-indication-a-series-of-17-patients
#3
Nishant Ganesh Kumar, Travis R Ladner, Imad S Kahn, Scott L Zuckerman, Christopher B Baker, Marybess Skaletsky, Deborah Cushing, Matthew R Sanborn, J Mocco, Robert D Ecker
INTRODUCTION/PURPOSE: Flow diversion has allowed cerebrovascular neurosurgeons and neurointerventionalists to treat complex, large aneurysms, previously treated with trapping, bypass, and/or parent vessel sacrifice. However, a minority of aneurysms remain that cannot be treated endovascularly, and microsurgical treatment is too dangerous. However, balloon test occlusion (macro and micro), micro WADA testing, ICG, intra-angiography and intra-operative monitoring are all available to clinically test the hypothesis that vessel sacrifice is safe...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28007770/flow-diversion-in-ruptured-intracranial-aneurysms-a-meta-analysis
#4
T P Madaelil, C J Moran, D T Cross, A P Kansagra
BACKGROUND: Flow diversion is now an established technique to treat unruptured intracranial aneurysms not readily amenable to endovascular coil embolization or open microsurgical occlusion. The role of flow-diverting devices in treating ruptured aneurysms is less clear. PURPOSE: To estimate rates of angiographic occlusion and good clinical outcome in patients with ruptured intracranial aneurysms treated with flow-diverting devices. DATA SOURCES: Systematic review of Ovid MEDLINE, PubMed, Cochrane databases, and EMBASE from inception to December 2015 for articles that included ruptured aneurysms treated with flow diversion...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27956252/clinical-features-management-considerations-and-outcomes-in-a-case-series-of-patients-with-parasellar-intracranial-aneurysms-undergoing-anterior-skull-base-surgery
#5
Daniel M Raper, Dale Ding, Elizabeth Evans, Robert M Starke, R Webster Crowley, Kenneth C Liu, Edward H Oldfield, John A Jane
BACKGROUND: The co-incidence of parasellar aneurysms (IA) and anterior skull base (ASB) lesions, while rare, presents a management challenge. IAs embedded within, or adjacent to, ASB lesions are at risk in the perioperative period, and may have unique presentations, natural histories, and outcomes. The objective of this study was to outline management options and nuances in patients with coexisting IAs and ASB lesions. METHODS: We retrospectively evaluated all patients who presented for management of IAs and ASB lesions from January 2006 to January 2014...
December 9, 2016: World Neurosurgery
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
#6
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/27884881/testing-stenting-and-flow-diversion-using-a-surgical-elastase-induced-complex-fusiform-aneurysm-model
#7
R Fahed, T E Darsaut, I Salazkin, J-C Gentric, M Mazighi, J Raymond
BACKGROUND AND PURPOSE: Rabbit elastase-induced saccular aneurysms have been commonly used for preclinical testing of endovascular devices, including flow diverters. However, all tested devices have been shown to be capable of aneurysm occlusion with this model. We aimed to create a more challenging model to test and discriminate among neurovascular devices of varying efficacies. MATERIALS AND METHODS: With a surgical approach that included elastase infusion and balloon dilation, we attempted the creation of complex fusiform aneurysms in 16 rabbits, with standard saccular carotid aneurysms created in 15 other animals...
November 24, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27864325/a-technical-consideration-when-using-flow-diversion-for-recurrent-aneurysms-following-stent-assisted-coiling
#8
Justin R Mascitelli, Daniel Wei, Thomas J Oxley, Christopher P Kellner, Hazem Shoirah, Reade A De Leacy, J Mocco, Johanna T Fifi
Flow diversion (FD) is a treatment option for recurrent aneurysms including following stent-assisted coiling (SAC), although this approach is both 'off-label' and unproven. A technical challenge of FD placement may involve the microwire catching on the tines of the previously placed stent or potentially going 'in-out-in' from the central axis of the stent. We report a case and technique that assures the wire has safely remained within the central axis of the stent. The procedure was performed in standard fashion except that the intermediate catheter was passed completely through the previously placed stent after the microwire/microcatheter had crossed...
November 18, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27856436/diffusion-weighted-imaging-detected-ischemic-lesions-following-endovascular-treatment-of-cerebral-aneurysms-a-systematic-review-and-meta-analysis
#9
K M Bond, W Brinjikji, M H Murad, D F Kallmes, H J Cloft, G Lanzino
BACKGROUND AND PURPOSE: Endovascular treatment of intracranial aneurysms is associated with the risk of thromboembolic ischemic complications. Many of these events are asymptomatic and identified only on diffusion-weighted imaging. We performed a systematic review and meta-analysis to study the incidence of DWI positive for thromboembolic events following endovascular treatment of intracranial aneurysms. MATERIALS AND METHODS: A comprehensive literature search identified studies published between 2000 and April 2016 that reported postprocedural DWI findings in patients undergoing endovascular treatment of intracranial aneurysms...
November 17, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27852655/a-technical-consideration-when-using-flow-diversion-for-recurrent-aneurysms-following-stent-assisted-coiling
#10
Justin R Mascitelli, Daniel Wei, Thomas J Oxley, Christopher P Kellner, Hazem Shoirah, Reade A De Leacy, J Mocco, Johanna T Fifi
Flow diversion (FD) is a treatment option for recurrent aneurysms including following stent-assisted coiling (SAC), although this approach is both 'off-label' and unproven. A technical challenge of FD placement may involve the microwire catching on the tines of the previously placed stent or potentially going 'in-out-in' from the central axis of the stent. We report a case and technique that assures the wire has safely remained within the central axis of the stent. The procedure was performed in standard fashion except that the intermediate catheter was passed completely through the previously placed stent after the microwire/microcatheter had crossed...
November 15, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27844465/blood-flow-diversion-as-a-primary-treatment-method-for-ruptured-brain-aneurysms-concerns-controversy-and-future-directions
#11
Brian P Walcott, Matthew J Koch, Christopher J Stapleton, Aman B Patel
Flow diversion is a novel treatment for brain aneurysms that works by redirecting blood flow away from the aneurysm. Immediately after placement of the stent, blood flow stagnates within the aneurysm dome and it undergoes thrombosis. Over time, a new endothelium develops across the neck, thereby reconstructing the parent vessel and curing the aneurysm. The use of this treatment method for ruptured aneurysms has two specific concerns: 1) risk of hemorrhage from the aneurysm after treatment because of potential delayed aneurysm occlusion; and 2) hemorrhagic complications from antiplatelet use, which is required to prevent thromboembolic complications from the device...
November 14, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27836994/treatment-of-posterior-circulation-non-saccular-aneurysms-with-flow-diverters-a-single-center-experience-and-review-of-56-patients
#12
REVIEW
P Bhogal, M Aguilar Pérez, O Ganslandt, H Bäzner, H Henkes, S Fischer
BACKGROUND AND PURPOSE: Non-saccular aneurysms of the posterior fossa are an uncommon pathology with no clear treatment strategy. The use of flow-diverting stents (FDS) has had mixed results. We sought to evaluate our experience of FDS for the treatment of this pathology. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated only with flow diversion for an unruptured non-saccular aneurysm of the posterior circulation between February 2009 and April 2016...
November 11, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27813466/flow-diversion-in-the-treatment-of-aneurysms-a-randomized-care-trial-and-registry
#13
Jean Raymond, Jean-Christophe Gentric, Tim E Darsaut, Daniela Iancu, Miguel Chagnon, Alain Weill, Daniel Roy
OBJECTIVE The Flow Diversion in the Treatment of Intracranial Aneurysm Trial (FIAT) was designed to guide the clinical use of flow diversion, an innovative method to treat intracranial aneurysms, within a care trial and to study safety and efficacy. METHODS FIAT, conducted in 3 Canadian hospitals, proposed randomized allocation to flow diversion or standard management options (observation, coil embolization, parent vessel occlusion, or clip placement), and a registry of non-randomized patients treated with flow diversion...
November 4, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27811135/treatment-of-intra-and-extracranial-aneurysms-using-the-flow-redirection-endoluminal-device-multicenter-experience-and-follow-up-results
#14
F Drescher, W Weber, A Berlis, S Rohde, A Carolus, S Fischer
BACKGROUND AND PURPOSE: Flow diversion emerged as a crucial treatment option for intracranial aneurysms. We report a multicenter retrospective analysis of the safety and efficacy in the treatment of intracranial aneurysms with the Flow-Redirection Endoluminal Device (FRED) flow diverter, a dual-layer flow-modulation device. MATERIALS AND METHODS: All intracranial aneurysms treated with the FRED between March 2013 and February 2016 at 4 neurovascular centers were included...
November 3, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27790401/hemodynamic-impact-of-a-spontaneous-cervical-dissection-on-an-ipsilateral-saccular-aneurysm
#15
Alfred P See, Bradley A Gross, David L Penn, Rose Du, Kai U Frerichs
The dynamic, hemodynamic impact of a cervical dissection on an ipsilateral, intracranial saccular aneurysm has not been well illustrated. This 45-year-old female was found to have a small, supraclinoid aneurysm ipsilateral to a spontaneous cervical internal carotid artery dissection. With healing of the dissection, the aneurysm appeared to have significantly enlarged. Retrospective review of the magnetic resonance imaging (MRI) at the time of the initial dissection demonstrated thrombus, similar in overall morphology to the angiographic appearance of the "enlarged" aneurysm...
June 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/27789789/use-of-flow-diverters-in-the-treatment-of-unruptured-saccular-aneurysms-of-the-anterior-cerebral-artery
#16
REVIEW
P Bhogal, R Martinez Moreno, O Ganslandt, H Bäzner, H Henkes, M Aguilar Perez
BACKGROUND: Few publications have dealt exclusively with the use of flow diverter stents for the treatment of aneurysms of the anterior cerebral artery (ACA). OBJECTIVE: To determine the efficacy of flow-diverting stents in the treatment of small, unruptured aneurysms of the ACA. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated with flow diversion for an unruptured saccular aneurysm of the ACA between September 2009 and July 2016...
October 27, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27760832/an-outcomes-based-grading-scale-for-the-evaluation-of-cerebral-aneurysms-treated-with-flow-diversion
#17
Min S Park, Marcus D Mazur, Karam Moon, Michael J Nanaszko, John R W Kestle, Lubdha M Shah, Blair Winegar, Felipe C Albuquerque, Philipp Taussky, Cameron G McDougall
OBJECT: Despite the popularity of flow-diverting stents for the treatment of cerebral aneurysms, there is no widely accepted scale for the characterization of results. We present an outcomes-based grading scale that considers factors related to failure of flow diversion. METHODS: The grading scale was developed using the results from consecutive patients at two institutions who were treated with flow diversion for a cerebral aneurysm. The initial treatment results were graded on patient, aneurysm, and treatment characteristics...
October 19, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27759680/rerupture-of-a-blister-aneurysm-after-treatment-with-a-single-flow-diverting-stent
#18
Marcus D Mazur, Philipp Taussky, Joel D MacDonald, Min S Park
BACKGROUND AND IMPORTANCE: As the use of flow-diverting stents (FDSs) for intracranial aneurysms expands, a small number of case reports have described the successful treatment of blister aneurysms of the internal carotid artery with flow diversion. Blister aneurysms are uncommon and fragile lesions that historically have high rates of morbidity and mortality despite multiple treatment strategies. We report a case of rebleeding after treatment of a ruptured blister aneurysm with deployment of a single FDS...
November 2016: Neurosurgery
https://www.readbyqxmd.com/read/27739944/pipeline-for-uncoilable-or-failed-aneurysms-3-year-follow-up-results
#19
Tibor Becske, Matthew B Potts, Maksim Shapiro, David F Kallmes, Waleed Brinjikji, Isil Saatci, Cameron G McDougall, István Szikora, Giuseppe Lanzino, Christopher J Moran, Henry H Woo, Demetrius K Lopes, Aaron L Berez, Daniel J Cher, Adnan H Siddiqui, Elad I Levy, Felipe C Albuquerque, David J Fiorella, Zsolt Berentei, Miklós Marosföi, Saruhan H Cekirge, Peter K Nelson
OBJECTIVE The long-term effectiveness of endovascular treatment of large and giant wide-neck aneurysms using traditional endovascular techniques has been disappointing, with high recanalization and re-treatment rates. Flow diversion with the Pipeline Embolization Device (PED) has been recently used as a stand-alone therapy for complex aneurysms, showing significant improvement in effectiveness while demonstrating a similar safety profile to stent-supported coil treatment. However, relatively little is known about its long-term safety and effectiveness...
October 14, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27703060/quantitative-assessment-of-parent-vessel-and-distal-intracranial-hemodynamics-following-pipeline-flow-diversion
#20
Sophia F Shakur, Victor A Aletich, Sepideh Amin-Hanjani, Ahmed E Hussein, Fady T Charbel, Ali Alaraj
BACKGROUND: Pipeline embolization devices (PEDs) are commonly used for endovascular treatment of cerebral aneurysms but can be associated with delayed ipsilateral intraparenchymal hemorrhage. Although intra-aneurysmal hemodynamic changes have been studied, parent vessel and intracranial hemodynamics after PED use are unknown. We examine the impact of flow diversion on parent artery and distal intracranial hemodynamics. METHOD: Patients with internal carotid cerebral aneurysms treated with PED who had flow volume rate, flow velocities, pulsatility index, resistance index, Lindegaard ratio, and wall shear stress (WSS) obtained after treatment using quantitative magnetic resonance angiography were reviewed...
October 4, 2016: Interventional Neuroradiology
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