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Neuroradiology Stroke

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180 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/28258802/endovascular-stroke-treatment-of-acute-tandem-occlusion-a-single-center-experience
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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...
March 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28279987/risk-of-thrombus-fragmentation-during-endovascular-stroke-treatment
#8
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
#9
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
#10
Rachid Madkouri, Michael Grelat
No abstract text is available yet for this article.
February 21, 2017: Neurology
https://www.readbyqxmd.com/read/28204602/measuring-cerebral-blood-flow-in-moyamoya-angiopathy-by-quantitative-magnetic-resonance-angiography-noninvasive-optimal-vessel-analysis
#11
Nadia Khan, Robert M Lober, Lauren Ostergren, Jacob Petralia, Teresa Bell-Stephens, Ramon Navarro, Abdullah Feroze, Gary K Steinberg
No abstract text is available yet for this article.
February 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28226284/does-suboccipital-decompression-and-evacuation-of-intraparenchymal-hematoma-improve-neurological-outcome-in-patients-with-spontaneous-cerebellar-hemorrhage
#12
Katharina A M Hackenberg, Andreas W Unterberg, Carla S Jung, Julian Bösel, Silvia Schönenberger, Klaus Zweckberger
OBJECTIVE: Spontaneous cerebellar hemorrhages (SCH) can lead to life-threatening complications with high mortality rates of 20-50%. Although complications of SCH can be prevented by surgical therapy, there is a lack of consensus concerning the optimal surgical technique for evacuating SCH. METHODS: In this retrospective study 85 patients with SCH were divided into four treatment groups: (1) Decompression and Hematoma Evacuation via suboccipital craniectomy and removal of the posterior arch of C1 (DHE)...
April 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28209579/patterns-of-brain-injury-in-newborns-treated-with-extracorporeal-membrane-oxygenation
#13
M A Wien, M T Whitehead, D Bulas, M Ridore, L Melbourne, G Oldenburg, B L Short, A N Massaro
BACKGROUND AND PURPOSE: Neonates treated with extracorporeal membrane oxygenation are at risk for brain injury and subsequent neurodevelopmental compromise. Advances in MR imaging and improved accessibility have led to the increased use of routine MR imaging after extracorporeal membrane oxygenation. Our objective was to describe the frequency and patterns of extracorporeal membrane oxygenation-related brain injury based on MR imaging findings in a large contemporary cohort of neonates treated with extracorporeal membrane oxygenation...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28213758/influence-of-a-combined-ct-c-arm-system-on-periprocedural-workflow-and-procedure-times-in-mechanical-thrombectomy
#14
Johannes Pfaff, Silvia Schönenberger, Christian Herweh, Mirko Pham, Simon Nagel, Peter Arthur Ringleb, Sabine Heiland, Martin Bendszus, Markus Alfred Möhlenbruch
OBJECTIVE: To achieve the fastest possible workflow in ischaemic stroke, we developed a CT/C-arm system, which allows imaging and endovascular treatment on the same patient table. METHODS: This prospective, monocentric trial was conducted between October 2014 and August 2016. Patients received stroke imaging and mechanical thrombectomy under general anaesthesia (GA) or conscious sedation (CS) using our combined setup comprising a CT-scanner and a mobile C-arm X-ray device...
February 17, 2017: European Radiology
https://www.readbyqxmd.com/read/28064357/ischemic-stroke-experimental-models-and-reality
#15
REVIEW
Clemens J Sommer
The vast majority of cerebral stroke cases are caused by transient or permanent occlusion of a cerebral blood vessel ("ischemic stroke") eventually leading to brain infarction. The final infarct size and the neurological outcome depend on a multitude of factors such as the duration and severity of ischemia, the existence of collateral systems and an adequate systemic blood pressure, etiology and localization of the infarct, but also on age, sex, comorbidities with the respective multimedication and genetic background...
February 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28118025/interrater-variability-for-ct-angiography-evaluation-between-neurologists-and-neuroradiologist-in-acute-stroke-patients
#16
Michal Bar, Jiri Kral, Tomas Jonszta, Vaclav Marcian, Martin Kuliha, Robert Mikulik
OBJECTIVE: The diagnosis of arterial occlusion has a considerable impact on the indication of mechanical thrombectomy, and CT angiography (CTA) is recommended in the management of acute stroke. The goal of the present study is to assess the interrater agreement in the diagnosis of occlusion of intracranial arteries on CTA between a neuroradiologist and neurologists. METHODS: CTA images of 75 acute stroke patients were evaluated for occlusion of intracranial arteries by an experienced interventional neuroradiologist, and stroke and general neurologists...
March 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28202707/cadasil-accelerated-by-acute-hypotension-arterial-and-venous-contribution-to-leukoaraiosis
#17
Jacqueline A Pettersen, Julia Keith, Fuqiang Gao, J David Spence, Sandra E Black
OBJECTIVE: To underline the importance of blood pressure regulation in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) and to describe changes that occur in the veins in this condition, specifically venous collagenosis associated with leukoaraiosis. METHODS: Case report with neuroimaging and pathologic data. RESULTS: A 61-year-old man with genetically confirmed CADASIL was initially lucid following a motor vehicle accident but subsequently became hypotensive (60/40 mm Hg) due to an open femur fracture and required intubation...
March 14, 2017: Neurology
https://www.readbyqxmd.com/read/28208130/factors-related-to-cardioembolism-as-major-predictors-of-poor-survival-after-first-ever-middle-cerebral-artery-stroke-treated-with-thrombolysis
#18
Renata Dal-Prá Ducci, Marcos Christiano Lange, Viviane de Hiroki Flumignan Zétola, Tatjana Rundek
BACKGROUND AND PURPOSE: Prognostic factors related to mortality rates after stroke have been reported; however, most studies included different treatments and did not focus solely on ischemic stroke. The study aimed to report the short- and long-term survival and predictors of death in patients with first-ever ischemic stroke in the middle cerebral artery (MCA) territory, submitted to intravenous thrombolysis (IVT). METHODS: A prospective observational cohort study of patients with first-ever ischemic stroke in the MCA territory treated with IVT from March 2010 to February 2015 was conducted, and patients were followed up until May 2015...
February 17, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28202431/thrombus-migration-in-the-middle-cerebral-artery-incidence-imaging-signs-and-impact-on-success-of-endovascular-thrombectomy
#19
Johannes Kaesmacher, Christian Maegerlein, Mirjam Kaesmacher, Claus Zimmer, Holger Poppert, Benjamin Friedrich, Tobias Boeckh-Behrens, Justus F Kleine
BACKGROUND: Thrombus migration (TM) in intracranial vessels during ischemic stroke has been reported in the form of case reports, but its incidence, impact on the technical success of subsequent endovascular thrombectomy and patients' outcome have never been studied systematically. METHODS AND RESULTS: Retrospective analysis was done of 409 patients with isolated middle cerebral artery occlusions treated with endovascular thrombectomy. TM was observed (1) by analyzing discrepancies between computed tomographic angiography and digital subtraction angiography and (2) by comparing infarct pattern in the striatocapsular region with exact, angiographically assessed thrombus location within the M1-segment and the involvement of the middle cerebral artery perforators...
February 15, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28081270/outcome-and-treatment-effects-in-stroke-associated-with-acute-cervical-ica-occlusion
#20
Michael Gliem, John-Ih Lee, Aurica Barckhan, Bernd Turowski, Hans-Peter Hartung, Sebastian Jander
BACKGROUND: Endovascular therapy (EVT) with stent retrievers in addition to i.v. thrombolysis (IVT) has proven effective in acute stroke patients with middle cerebral artery (MCA, M1 segment) and distal internal carotid artery (ICA) occlusion. Limited data exist concerning acute cervical ICA occlusion, either alone or in combination with intracranial ICA occlusion (tandem occlusion). Therefore we analyzed outcome and treatment effects in stroke associated with cervical ICA occlusion, with specific focus on the impact of intracranial ICA or M1 patency...
2017: PloS One
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