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https://www.readbyqxmd.com/read/28522664/non-contrast-enhanced-silent-scan-mr-angiography-of-intracranial-anterior-circulation-aneurysms-treated-with-a-low-profile-visualized-intraluminal-support-device
#1
N Takano, M Suzuki, R Irie, M Yamamoto, K Teranishi, K Yatomi, N Hamasaki, K K Kumamaru, M Hori, H Oishi, S Aoki
BACKGROUND AND PURPOSE: The Low-Profile Visualized Intraluminal Support Device comprises a small-cell nitinol structure and a single-wire braided stent that provides greater metal coverage than previously reported intracranial stents, as well as assumed strong susceptibility artifacts. This study aimed to assess the benefits of non-contrast-enhanced MRA by using a Silent Scan (Silent MRA) for intracranial anterior circulation aneurysms treated with Low-Profile Visualized Intraluminal Support Device stents...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28515570/association-between-hemodynamic-modifications-and-clinical-outcome-of-intracranial-aneurysms-treated-using-flow-diverters
#2
Nikhil Paliwal, Robert J Damiano, Jason M Davies, Adnan H Siddiqui, Hui Meng
Treatment of intracranial aneurysms (IAs) has been revolutionized by the advent of endovascular Flow Diverters (FDs), which disrupt blood flow within the aneurysm to induce pro-thrombotic conditions, and serves as a scaffold for endothelial ingrowth and arterial remodeling. Despite good clinical success of FDs, complications like incomplete occlusion and post-treatment rupture leading to subarachnoid hemorrhage have been reported. In silico computational fluid dynamic analysis of the pre- and post-treated geometries of IA patients can shed light on the contrasting blood hemodynamics associated with different clinical outcomes...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28508117/single-center-experience-using-the-3max-reperfusion-catheter-for-the-treatment-of-acute-ischemic-stroke-with-distal-arterial-occlusions
#3
Kévin Premat, Bruno Bartolini, Flore Baronnet-Chauvet, Eimad Shotar, Vincent Degos, Paul Muresan, Federico Di Maria, Joseph Gabrieli, Charlotte Rosso, Silvia Pistocchi, Jacques Chiras, Nader Sourour, Sonia Alamowitch, Yves Samson, Frédéric Clarençon
PURPOSE: Most recent guidelines recommend the use of stent retriever devices in endovascular treatment of acute ischemic stroke with large vessel occlusion (LVO). Recently published data reported convincing results with thromboaspiration devices such as the Penumbra System (Penumbra, Alameda, CA, USA) combined with supple reperfusion catheters by using the ADAPT (A Direct Aspiration First-Pass Thrombectomy) technique. The aim of this study was to report our initial experience with the 3MAX (3...
May 15, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28504557/carotid-angioplasty-assisted-mechanical-thrombectomy-without-urgent-stenting-may-be-a-better-option-in-acute-tandem-occlusions
#4
Cetin K Akpinar, Erdem Gürkaş, Emrah Aytac
Background The aim of the study was to assess the efficacy of balloon angioplasty-assisted mechanical thrombectomy without urgent stenting in the carotid artery as another approach for endovascular treatment of tandem occlusions. Methods Fifteen consecutive cases of tandem occlusions treated with the endovascular approach between January 2014 and May 2016 were reviewed. The study cohort included patients with an etiology of large vessel atherosclerosis. Extracranial carotid stenting was performed in another session if post-thrombectomy mRS modified Rankin Score (mRS) was 0-2...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28503484/prophylactic-dual-catheter-technique-to-prevent-side-branch-snowplowing-complications-during-angioplasty-and-stenting
#5
Leonard Ll Yeo, W M Wu, Y L Chen, C H Yeh, H F Wong
OBJECTIVE: Angioplasty and Stenting of intracranial atherosclerotic lesions have a higher complication rate and a large proportion of this is attributable to side branch arterial occlusion from forceful displacement of the atheroma into the ostia or snowplowing effect. This can result in severe disabilities when it result in small infarcts involving eloquent areas in the posterior circulation or the motor tracts. MATERIALS AND METHODS: We present a series of 6 cases utilizing a new dual catheter technique for maintaining the patency of at-risk vessels during angioplasty and stenting...
March 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/28501811/haemodynamic-analysis-for-recanalisation-of-intracranial-aneurysms-after-endovascular-treatment-an-observational-registry-study-in-china
#6
Jian Liu, Yisen Zhang, Anxin Wang, Ying Zhang, Yiying Li, Xinjian Yang
INTRODUCTION: Recanalisation of intracranial aneurysms following endovascular treatment is a major issue. Many factors, including aneurysm morphology, the method of treatment, and haemodynamics, are considered to be associated with recanalisation. However, the underlying haemodynamic mechanisms are not completely understood. METHODS AND ANALYSIS: This is a prospective, observational, registry study for patients with intracranial aneurysms who are treated endovascularly...
May 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28495179/impact-of-hypertriglyceridemia-on-carotid-stenosis-progression-under-normal-low-density-lipoprotein-cholesterol-levels
#7
Masayuki Kitagami, Ryuta Yasuda, Naoki Toma, Masato Shiba, Mai Nampei, Yoko Yamamoto, Yoshinari Nakatsuka, Hiroshi Sakaida, Hidenori Suzuki
BACKGROUND: Dyslipidemia is a well-known risk factor for carotid stenosis progression, but triglycerides have attracted little attention. The aim of this study was to assess if serum triglycerides affect progression of carotid stenosis in patients with well-controlled low-density lipoprotein cholesterol (LDL-C) levels. METHODS: This is a retrospective study in a single hospital consisting of 71 Japanese patients with internal carotid artery stenosis greater than or equal to 50% and normal serum LDL-C levels who underwent angiographic examination with or without the resultant carotid artery stenting or endarterectomy from 2007 to 2011, and were subsequently followed up for 4 years...
May 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28488070/cerebral-aneurysm-neck-diameter-is-an-independent-predictor-of-progressive-occlusion-after-stent-assisted-coiling
#8
Masahito Nakazaki, Tadashi Nonaka, Tatsufumi Nomura, Toshiyuki Onda, Yasuyuki Yonemasu, Akira Takahashi, Yuji Hashimoto, Osamu Honda, Shinichi Oka, Masanori Sasaki, Masahiko Daibo, Osamu Honmou
BACKGROUND: Some intracranial aneurysms treated by stent-assisted coiling (SAC) with incomplete occlusion undergo progressive occlusion (PO) during follow-up period. We analyzed the predictors for the occurrence of PO. METHODS: Among 74 cerebral aneurysms treated by SAC using the Enterprise or Neuroform stents from 2010 to 2015, we included 43 aneurysms with occlusion grade of neck remnant (NR, n = 36) or residual aneurysm (RA, n = 7) at the post-procedure. We defined PO as improvement in occlusion grade from RA to NR, or from NR or RA to complete occlusion on angiographic follow-up imaging at 6 months after the procedure...
May 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28488025/in-stent-stenosis-after-p64-flow-diverter-treatment
#9
M Aguilar Pérez, P Bhogal, E Henkes, O Ganslandt, H Bäzner, H Henkes
PURPOSE: There is limited information available on the incidence of in-stent stenosis (ISS) secondary to the use of flow-diverting stents in the intracranial vasculature. We sought to determine the incidence, severity, and clinical course of ISS on angiographic follow-up after treatment of saccular aneurysms with p64. METHODS: We retrospectively reviewed all patients who underwent treatment of a saccular (ruptured and unruptured) intracranial aneurysm with ≥1 p64 between 2011 and 2015...
May 9, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28487359/venous-sinus-stenting-shortens-the-duration-of-medical-therapy-for-increased-intracranial-pressure-secondary-to-venous-sinus-stenosis
#10
Tarek A Shazly, Ashutosh P Jadhav, Amin Aghaebrahim, Andrew F Ducruet, Brian T Jankowitz, Tudor G Jovin, Gabrielle R Bonhomme
INTRODUCTION: Medical treatment, cerebrospinal fluid (CSF) shunting, and optic nerve sheath fenestration are standard treatments for increased intracranial pressure (ICP) in patients with idiopathic intracranial hypertension (IIH). Venous sinus stenting provides a novel alternative surgical treatment in cases of venous sinus stenosis with elevated ICP. METHODS: 12 consecutive subjects with papilledema, increased ICP, and radiological signs of dural sinus stenosis underwent cerebral venography and manometry...
May 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28473345/temporary-stent-assisted-coil-embolization-as-a-treatment-option-for-wide-neck-aneurysms
#11
M Müller, C Brockmann, S Afat, O Nikoubashman, G A Schubert, A Reich, A E Othman, M Wiesmann
BACKGROUND AND PURPOSE: Simple coil embolization is often not a feasible treatment option in wide-neck aneurysms. Stent-assisted coil embolization helps stabilize the coils within the aneurysm. Permanent placement of a stent in an intracranial vessel, however, requires long-term platelet inhibition. Temporary stent-assisted coiling is an alternative technique for the treatment of wide-neck aneurysms. To date, only case reports and small case series have been published. Our purpose was to retrospectively analyze the effectiveness and safety of temporary stent-assisted coiling in a larger cohort...
May 4, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28472526/glycoprotein-iib-iiia-inhibitors-in-prevention-and-rescue-treatment-of-thromboembolic-complications-during-endovascular-embolization-of-intracranial-aneurysms
#12
David Dornbos, Joel S Katz, Patrick Youssef, Ciarán J Powers, Shahid M Nimjee
Thromboembolic complications remain a major risk of endovascular neurosurgery during the treatment of intracranial aneurysms, despite the use of therapeutic heparinization and oral antiplatelet therapy when indicated. Glycoprotein (GP) IIb/IIIa inhibitors target a nonredundant pathway of platelet aggregation following adhesion and activation. Initially established and implemented in the cardiovascular arena, this drug class has provided a new tool in the neurovascular armamentarium as well. Numerous case reports, case series, and retrospective reviews have evaluated the safety and efficacy of abciximab, eptifibatide, and tirofiban in the treatment of acute thromboembolic complications during the endovascular treatment of intracranial aneurysms...
May 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28471607/patient-outcomes-with-stent-retriever-thrombectomy-for-anterior-circulation-stroke-a-meta-analysis-and-review-of-the-literature
#13
Rotem Sivan-Hoffmann, Benjamin Gory, Muriel Rabilloud, Dorin N Gherasim, Xavier Armoiry, Roberto Riva, Paul-Emile Labeyrie, Udi Gonike-Sadeh, Islam Eldesouky, Francis Turjman
Mechanical thrombectomy with stent retrievers is now the reference therapy for acute ischemic stroke (AIS) in the anterior circulation in association with thrombolysis. We conducted an extensive systematic review and meta-analysis to evaluate the clinical and angiographic outcomes of stent-retriever thrombectomy in patients with acute anterior circulation stroke. Available literature published to date on observational studies and three randomized trials (MR CLEAN, ESCAPE, and EXTEND-IA) involving the stent-retriever device were reviewed...
September 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28465268/intracranial-blood-flow-changes-in-patients-with-high-grade-severe-carotid-artery-stenosis-after-stenting
#14
Lei Huang, Wenjie Cao, Liang Ge, Gang Lu, Xiaolong Zhang, Daoying Geng
OBJECTIVE: We investigated whether the cerebral hemodynamic changes of pre- and poststenting in patients with severe carotid stenosis differ by stenosis grades. MATERIALS AND METHODS: We prospectively recruited patients who underwent carotid artery stenting (CAS) after acute ischemic stroke from June 2014 to December 2015. We compared the mean relative cerebral blood flow changes (rCBF) (measured by whole-brain computed tomography [CT] perfusion) pre- and poststenting in patients with high-grade severe stenosis (HGSS 90%-99%) versus patients with low-grade severe stenosis (LGSS 70%-89%)...
April 29, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28455321/nonprocedural-symptomatic-infarction-and-in-stent-restenosis-after-intracranial-angioplasty-and-stenting-in-the-sammpris-trial-stenting-and-aggressive-medical-management-for-the-prevention-of-recurrent-stroke-in-intracranial-stenosis
#15
Colin P Derdeyn, David Fiorella, Michael J Lynn, Tanya N Turan, George A Cotsonis, Bethany F Lane, Jean Montgomery, L Scott Janis, Marc I Chimowitz
BACKGROUND AND PURPOSE: The purpose of this study was to investigate the frequency of symptomatic in-stent restenosis (ISR) and its contribution to nonprocedural symptomatic infarction in the SAMMPRIS trial (Stenting and Aggressive Medical Management for the Prevention of Recurrent Stroke in Intracranial Stenosis). METHODS: Patients without a periprocedural primary end point were followed up to determine the occurrence of any of the following events: ischemic stroke, cerebral infarct with temporary signs, or transient ischemic attack in the territory of the stented artery...
April 28, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28452616/an-ovine-model-of-cerebral-catheter-venography-for-implantation-of-an-endovascular-neural-interface
#16
Thomas James Oxley, Nicholas Lachlan Opie, Gil Simon Rind, Kishan Liyanage, Sam Emmanuel John, Stephen Ronayne, Alan James McDonald, Anthony Dornom, Timothy John Haynes Lovell, Peter John Mitchell, Iwan Bennett, Sebastien Bauquier, Leon Norris Warne, Chris Steward, David Bruce Grayden, Patricia Desmond, Stephen M Davis, Terence John O'Brien, Clive N May
OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neurological conditions, including motor prostheses for spinal cord injury. Intracranial neural interfaces currently require a craniotomy to achieve implantation and may result in chronic tissue inflammation. Novel approaches are required that achieve less invasive implantation methods while maintaining high spatial resolution. An endovascular stent electrode array avoids direct brain trauma and is able to record electrocorticography in local cortical tissue from within the venous vasculature...
April 28, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28442330/symptomatic-carotid-artery-disease-revascularization
#17
REVIEW
Piero Montorsi, Stefano Galli, Paolo M Ravagnani, Marco Roffi
Patients with symptomatic carotid artery disease should be managed by a multidisciplinary team including neurologists, vascular surgeons and interventionalists. Duplex ultrasound is the most widely used diagnostic modality to assess carotid disease, followed by additional imaging tests (CT- or MR-angiography) to confirm the severity of the stenosis, detect brain lesions, and assess intracranial circulation as well as the supra-aortic anatomy. Although overall randomized trial results favored (CEA) over carotid artery stenting (CAS) in symptomatic patients, this was likely related to the insufficient expertise of the endovascular specialists in several of the trials...
April 22, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28439656/-management-of-paraophthalmic-aneurysms-review-of-endovascular-treatment-strategies
#18
P Bhogal, M Aguilar Pérez, G Sauder, H Bäzner, O Ganslandt, H Henkes
BACKGROUND: Aneurysms of the cerebral vessels are relatively common and aneurysms of the ophthalmic segment of the internal carotid artery (ICA) represent approximately 10% of intradural aneurysms. ANATOMICAL ASPECTS: The ophthalmic segment of the ICA extends from the origin of the ophthalmic artery to the origin of the posterior communicating artery. Aneurysms can originate from the ophthalmic artery itself or directly from the ICA at a distance from the ophthalmic artery...
April 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28438894/flow-diverter-treatment-of-intracranial-vertebral-artery-dissecting-pseudoaneurysms
#19
REVIEW
Russell Cerejo, Mark Bain, Nina Moore, Julian Hardman, Andrew Bauer, M Shazam Hussain, Thomas Masaryk, Peter Rasmussen, Gabor Toth
INTRODUCTION: Intracranial vertebral dissecting pseudoaneurysms are a rare, but increasingly recognized, cause of subarachnoid hemorrhage and ischemic stroke. The risks of aneurysm re-rupture and associated morbidity are high. The use of flow diverter stents for the treatment of these aneurysms has not been well studied. OBJECTIVE: To report our data and provide a summarized review of literature using flow diverter stents for the treatment of intracranial vertebral artery dissecting pseudoaneurysms...
April 24, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28438653/the-fate-of-side-branches-covered-by-flow-diverters-results-from-140-patients
#20
P Bhogal, O Ganslandt, H Bäzner, H Henkes, M Aguilar Perez
BACKGROUND: Flow diverter stents (FDS) are a recognised treatment option for intracranial aneurysms. There remain on-going concerns regarding the safety of FDS especially when it comes to the fate of covered side branches. We sought to report on the patency of side branches covered by FDS. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated with FDS for an unruptured saccular aneurysm of the clinoid, ophthalmic, and terminating segments of the internal carotid artery between September 2009 and July 2016...
April 21, 2017: World Neurosurgery
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