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Neuroradiology Stroke

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190 papers 25 to 100 followers Articles about stroke and vascular pathology for the neuroradiologist.
By Sebastian Bravo-Grau Neuroradiology Fellow - Radiologist
https://www.readbyqxmd.com/read/28373376/teaching-neuroimages-hiv-associated-cerebral-vasculopathy-with-multiple-nodular-aneurysms
#1
Alexander Seiler, Se-Jong You, Marlies Wagner, Johannes C Klein
No abstract text is available yet for this article.
April 4, 2017: Neurology
https://www.readbyqxmd.com/read/28343220/hemorrhagic-transformations-after-thrombectomy-risk-factors-and-clinical-relevance
#2
Johannes Kaesmacher, Mirjam Kaesmacher, Christian Maegerlein, Claus Zimmer, Alexandra S Gersing, Silke Wunderlich, Benjamin Friedrich, Tobias Boeckh-Behrens, Justus F Kleine
BACKGROUND: Hemorrhagic transformation (HT) is a major complication of acute ischemic stroke, potentially associated with clinical deterioration. We attempted to identify risk factors and evaluated clinical relevance of minor and major HTs following endovascular thrombectomy (ET) in isolated middle cerebral artery (MCA) occlusions. METHODS: This is a retrospective single-center analysis of 409 patients with isolated MCA occlusion treated with ET. Patients' and procedural characteristics, severity of HT according to the European Cooperative Acute Stroke Study criteria, and clinical outcomes were analyzed...
March 25, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28145447/unruptured-intracranial-aneurysms-development-rupture-and-preventive-management
#3
Nima Etminan, Gabriel J Rinkel
No abstract text is available yet for this article.
February 1, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28318984/safety-and-efficacy-of-thrombectomy-in-acute-ischaemic-stroke-revascat-1-year-follow-up-of-a-randomised-open-label-trial
#4
RANDOMIZED CONTROLLED TRIAL
Antoni Dávalos, Erik Cobo, Carlos A Molina, Angel Chamorro, M Angeles de Miquel, Luis San Román, Joaquín Serena, Elena López-Cancio, Marc Ribó, Mónica Millán, Xabier Urra, Pere Cardona, Alejandro Tomasello, Carlos Castaño, Jordi Blasco, Lucía Aja, Marta Rubiera, Meritxell Gomis, Arturo Renú, Blanca Lara, Joan Martí-Fàbregas, Brian Jankowitz, Neus Cerdà, Tudor G Jovin
BACKGROUND: The REVASCAT trial and other studies have shown that the neurovascular thrombectomy improves outcomes at 90 days post stroke. However, whether the observed benefit is sustained in the long term remains unknown. We report the results of the prespecified 12-month analysis of the REVASCAT trial. METHODS: Patients with acute ischaemic stroke who could be treated within 8 h of symptom onset were randomly assigned to medical therapy (including intravenous alteplase when eligible) and neurovascular thrombectomy with Solitaire FR or medical therapy alone...
May 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28302608/ipsilateral-prominent-thalamostriate-vein-on-susceptibility-weighted-imaging-predicts-poor-outcome-after-intravenous-thrombolysis-in-acute-ischemic-stroke
#5
X Zhang, S Zhang, Q Chen, W Ding, B C V Campbell, M Lou
BACKGROUND AND PURPOSE: The impact of deep cerebral veins on neurologic outcome after intravenous thrombolysis in patients with acute ischemic stroke is unclear. We investigated the relationship between the appearance of deep cerebral veins on susceptibility-weighted imaging and neurologic outcome in patients who underwent thrombolysis. MATERIALS AND METHODS: We retrospectively analyzed 109 consecutive patients with acute ischemic stroke who had pretreatment SWI and received intravenous thrombolysis within 6 hours...
March 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28302610/selective-versus-standard-poststent-dilation-for-carotid-artery-disease-a-systematic-review-and-meta-analysis
#6
O Petr, W Brinjikji, M H Murad, B Glodny, G Lanzino
BACKROUND: The safety and efficacy of standard poststent angioplasty in patients undergoing carotid artery stent placement have not been well-established. PURPOSE: We conducted a systematic review of the literature to evaluate the safety and efficacy of carotid artery stent placement and analyzed outcomes of standard-versus-selective poststent angioplasty. DATA SOURCES: A systematic search of MEDLINE, EMBASE, Scopus, and the Web of Science was performed for studies published between January 2000 and January 2015...
March 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28302611/site-and-rate-of-occlusive-disease-in-cervicocerebral-arteries-a-ct-angiography-study-of-2209-patients-with-acute-ischemic-stroke
#7
D C Rotzinger, P J Mosimann, R A Meuli, P Maeder, P Michel
BACKGROUND AND PURPOSE: CTA can rapidly and accurately detect and localize occlusive disease in patients with ischemic stroke. We have used CTA to assess arterial stenosis and occlusion in an ischemic stroke population arriving at a tertiary stroke center within 24 hours of symptom onset in order to obtain a comprehensive picture of occlusive disease pattern, and to determine the proportion of eligible candidates for endovascular treatment. MATERIALS AND METHODS: Data from consecutive patients with acute ischemic stroke admitted to a single center between 2003 and 2012, collected in the Acute Stroke Registry and Analysis of Lausanne data base, were retrospectively analyzed...
March 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28341719/brain-perivascular-spaces-as-biomarkers-of-vascular-risk-results-from-the-northern-manhattan-study
#8
J Gutierrez, M S V Elkind, C Dong, M Di Tullio, T Rundek, R L Sacco, C B Wright
BACKGROUND AND PURPOSE: Dilated perivascular spaces in the brain are associated with greater arterial pulsatility. We hypothesized that perivascular spaces identify individuals at higher risk for systemic and cerebral vascular events. MATERIALS AND METHODS: Stroke-free participants in the population-based Northern Manhattan Study had brain MR imaging performed and were followed for myocardial infarction, any stroke, and death. Imaging analyses distinguished perivascular spaces from lesions presumably ischemic...
March 24, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28364004/acute-cytotoxic-and-vasogenic-edema-after-subarachnoid-hemorrhage-a-quantitative-mri-study
#9
J M Weimer, S E Jones, J A Frontera
BACKGROUND AND PURPOSE: The mechanism of early brain injury following subarachnoid hemorrhage is not well understood. We aimed to evaluate if cytotoxic and vasogenic edema are contributing factors. MATERIALS AND METHODS: A retrospective analysis was conducted in patients with SAH undergoing diffusion-weighted MR imaging within 72 hours of onset. Apparent diffusion coefficient values derived from DWI were evaluated by using whole-brain histograms and 19 prespecified ROIs in patients with SAH and controls with normal findings on MRI...
March 31, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28364008/striving-for-the-best-how-far-should-we-go-regarding-impact-of-modified-tici-3-versus-modified-tici-2b-reperfusion-score-to-predict-good-outcome-following-endovascular-therapy
#10
LETTER
https://www.readbyqxmd.com/read/28258802/endovascular-stroke-treatment-of-acute-tandem-occlusion-a-single-center-experience
#11
Fabrizio Sallustio, Caterina Motta, Giacomo Koch, Silvia Pizzuto, Bruce C V Campbell, Marina Diomedi, Barbara Rizzato, Alessandro Davoli, Giorgio Loreni, Daniel Konda, Matteo Stefanini, Sebastiano Fabiano, Enrico Pampana, Paolo Stanzione, Roberto Gandini
PURPOSE: To evaluate outcomes and prognostic factors in patients with acute ischemic stroke caused by tandem internal carotid artery/middle cerebral artery occlusion undergoing endovascular treatment. MATERIALS AND METHODS: Characteristics of consecutive patients with tandem occlusion (TO) were extracted from a prospective registry. Collateral vessel quality on pretreatment computed tomographic (CT) angiography was evaluated on a 4-point grading scale, and patients were dichotomized as having poor or good collateral flow...
February 28, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28300680/evaluation-by-mri-of-silent-brain-infarcts-in-pre-and-post-operative-asymptomatic-carotid-surgery
#12
Remy Pascot, Anne Daoudal, Alain Cardon, Gilles Godet, Antoine Lucas, Elodie Clochard, Jean-Yves Gauvrit, Yann Le Teurnier, Adrien Kaladji
OBJECTIVE: To report the prevalence of Silent Brain Infarcts (SBI) at MRI before and after surgery for asymptomatic high grade carotid stenosis. DESIGN: Single-center retrospective observational study METHODS: Asymptomatic patients who underwent carotid endarterectomy between October 2012 and October 2014 were included. The preoperative assessment included a Doppler and a CT scan dating less than 3 months. A neurological examination was performed during the anesthesia consultation and in the 15 days before surgery...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27689921/diagnosis-of-vein-of-galen-aneurysmal-malformation-using-fetal-mri
#13
Li-Xia Zhou, Su-Zhen Dong, Ming-Feng Zhang
PURPOSE: To present three fetal vein of Galen aneurysmal malformations (VGAMs), which were diagnosed through magnetic resonance imaging (MRI), and highlight these cardiovascular findings. MATERIALS AND METHODS: We retrospectively reviewed three fetuses with VGAM at 31, 32, and 33 weeks of gestation. Feeding arteries and draining veins were observed by MRI. Secondary changes in the brain and high-output heart failure caused by high blood flow in the lesion were evaluated...
September 30, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28255031/progressive-cortical-neuronal-damage-and-extracranial-intracranial-bypass-surgery-in-patients-with-misery-perfusion
#14
H Yamauchi, S Kagawa, Y Kishibe, M Takahashi, T Higashi
BACKGROUND AND PURPOSE: Misery perfusion may cause selective neuronal damage in atherosclerotic ICA or MCA disease. Bypass surgery can improve misery perfusion and may prevent neuronal damage. On the other hand, surgery conveys a risk for neuronal damage. The purpose of this retrospective study was to determine whether progression of cortical neuronal damage in surgically treated patients with misery perfusion is larger than that in surgically treated patients without misery perfusion or medically treated patients with misery perfusion...
March 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28154125/interventional-radiology-clinical-practice-guideline-recommendations-for-neurovascular-disorders-are-not-based-on-high-quality-systematic-reviews
#15
A B Chong, M Taylor, G Schubert, M Vassar
BACKGROUND: In recent years, clinical practice guidelines have been criticized for biased interpretations of research evidence, and interventional radiology is no exception. PURPOSE: Our aim was to evaluate the methodologic quality and transparency of reporting in systematic reviews used as evidence in interventional radiology clinical practice guidelines for neurovascular disorders from the Society of Interventional Radiology. DATA SOURCES: Our sources were 9 neurovascular disorder clinical practice guidelines from the Society of Interventional Radiology...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209576/differences-in-hemodynamics-and-rupture-rate-of-aneurysms-at-the-bifurcation-of-the-basilar-and-internal-carotid-arteries
#16
R Doddasomayajula, B Chung, F Hamzei-Sichani, C M Putman, J R Cebral
BACKGROUND AND PURPOSE: Cerebral aneurysms in the posterior circulation are known to have a higher rupture risk than those in the anterior circulation. We sought to test the hypothesis that differences in hemodynamics can explain the difference in rupture rates. MATERIALS AND METHODS: A total of 117 aneurysms, 63 at the tip of the basilar artery (27 ruptured, 36 unruptured, rupture rate = 43%) and 54 at the bifurcation of the internal carotid artery (11 ruptured, 43 unruptured, rupture rate = 20%) were analyzed with image-based computational fluid dynamics...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28279986/comparison-of-the-diagnostic-utility-of-4d-dsa-with-conventional-2d-and-3d-dsa-in-the-diagnosis-of-cerebrovascular-abnormalities
#17
C Sandoval-Garcia, P Yang, T Schubert, S Schafer, S Hetzel, A Ahmed, C Strother
BACKGROUND AND PURPOSE: 4D-DSA is a time-resolved technique that allows viewing of a contrast bolus at any time and from any desired viewing angle. Our hypothesis was that the information content in a 4D-DSA reconstruction was essentially equivalent to that in a combination of 2D acquisitions and a 3D-DSA reconstruction. MATERIALS AND METHODS: Twenty-six consecutive patients who had both 2D- and 3D-DSA acquisitions were included in the study. The angiography report was used to obtain diagnoses and characteristics of abnormalities...
April 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28279987/risk-of-thrombus-fragmentation-during-endovascular-stroke-treatment
#18
J Kaesmacher, T Boeckh-Behrens, S Simon, C Maegerlein, J F Kleine, C Zimmer, L Schirmer, H Poppert, T Huber
BACKGROUND AND PURPOSE: Periprocedural thrombus fragmentation is a relevant risk in endovascular stroke treatment. Because factors influencing its occurrence are largely unknown, this study addresses a potential relationship between thrombus histology and clot stability. MATERIALS AND METHODS: Eighty-five patients with anterior circulation stroke treated with thrombectomy were included in this retrospective study. The number and location of emboli after retrieving the primary thrombus, the number of maneuvers, and TICI scores were evaluated...
March 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28242856/teaching-neuroimages-crying-thalamus-manifestation-of-acute-ischemic-stroke
#19
Ahmed Z Obeidat, Joseph P Broderick
No abstract text is available yet for this article.
February 28, 2017: Neurology
https://www.readbyqxmd.com/read/28220016/teaching-neuroimages-superficial-siderosis-due-to-a-dural-cervical-arteriovenous-fistula
#20
Rachid Madkouri, Michael Grelat
No abstract text is available yet for this article.
February 21, 2017: Neurology
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