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Specialty: Neurology
Procedure: Angiography
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Total 2194 results found since Jan 2013.
Ultra-acute CT perfusion imaging: A stroke in the scanner
A stroke patient with a mild right hemiparesis (NIH Stroke Scale score 4) underwent dual-slab CT perfusion (CTP). In the midst of acquiring the lower CTP slab, she became aphasic and developed a dense right hemiparesis (NIH Stroke Scale score 17). Reconstruction of the CTP into a dynamic CT angiogram demonstrates fragmentation of an internal carotid artery thrombus at the time of clinical worsening (figure 1; video on the Neurology® Web site at Neurology.org). The upper CTP slab, acquired 2 minutes later, provides the earliest known view of the hemodynamics of ischemic stroke in humans. It demonstrates total absence of...
Source: Neurology - November 9, 2015 Category: Neurology Authors: Christensen, S., Obi, C., Albers, G., Lansberg, M. Tags: CT, All Cerebrovascular disease/Stroke, Embolism, Infarction VIDEO NEUROIMAGES Source Type: research
A Comparison of Door-to-Puncture Times in Expedited Management of Acute Ischemic Stroke Patients (P2.315)
Conclusions: We demonstrate that a substantial time difference exists in the treatment of traditional versus direct AIS patients. Transporting stroke patients directly to the angiography suite may result in significant time saving and lead to better functional outcomes. This should be evaluated in larger prospective studies.Disclosure: Dr. Nayan has nothing to disclose. Dr. See has nothing to disclose. Dr. Khandelwal has nothing to disclose. Dr. Patel has nothing to disclose. Dr. Aziz-Sultan has received personal compensation for activities with Covidien.
Source: Neurology - April 3, 2016 Category: Neurology Authors: Nayan, L., See, A., Khandelwal, P., Patel, N., Aziz-Sultan, M. Tags: Stroke Systems of Care Source Type: research
Inter-Rater Variability for Evaluation of ASPECT Score Between a Neurologist and Neuroradiologist in Acute Stroke Patients (P6.020)
Conclusion Inter-rater agreement of evaluation early acute CT ischemic changes in acute-stroke patients between a neurologist and neuroradiologist was almost perfect. That could improve management of the acute stroke and mechanical thrombectomy care. It would support the faster activation of the thrombectomy team, leading to shorter door-to-needle- times and eventually, better outcomes.Disclosure: Dr. Kral has nothing to disclose. Dr. Bar has nothing to disclose. Dr. Jonszta has nothing to disclose. Dr. Marcian has nothing to disclose. Dr. Kuliha has nothing to disclose.
Source: Neurology - April 3, 2016 Category: Neurology Authors: Kral, J., Bar, M., Jonszta, T., Marcian, V., Kuliha, M. Tags: Ischemic Stroke Diagnosis Source Type: research
Sensitivity and Specificity of the Prehospital NIHSS for Screening Intra-Arterial Thrombectomy Candidates: Experience on a Mobile Stroke Unit (P6.049)
Conclusions: The NIHSS obtained in the prehospital setting can help identify IAT candidates according to current guidelines, but is imprecise. An NIHSS cutoff of >9 identifies 83[percnt] of candidates; while it also falsely identifies a substantial number of patients who could be screened out at CSCs after CTA. An NIHSS cutoff >4 identifies all IAT candidates. Further study of the NIHSS to identify patients who may require transfer to CSCs for IAT may be useful in settings without readily available CTA.Disclosure: Dr. Jagolino has nothing to disclose. Dr. Cai has nothing to disclose. Dr. Rahbar has nothing to disclos...
Source: Neurology - April 3, 2016 Category: Neurology Authors: Jagolino, A., Cai, C., Rahbar, M., Bowry, R., Parker, S., Grotta, J. Tags: Prehospital Stroke Care and Uses of NIHSS Source Type: research
Predictors of Restenosis Following Carotid Angioplasty and Stenting Brief Reports
Conclusions—
Carotid restenosis after carotid angioplasty is associated with ipsilateral stroke occurrence. In our sample, hypertension, angioplasty without stent, and impaired vasoreactivity identify patients at high risk of restenosis and could help to select patients for follow-up ultrasonography imaging.
Source: Stroke - July 24, 2016 Category: Neurology Authors: Zapata-Arriaza, E., Moniche, F., Gonzalez, A., Bustamante, A., Escudero-Martinez, I., De la Torre Laviana, F. J., Prieto, M., Mancha, F., Montaner, J. Tags: Angiography, Ultrasound, Stent, Ischemic Stroke, Atherosclerosis Brief Reports Source Type: research
Anesthesia and neurologic outcome of endovascular therapy in acute ischemic stroke: MR (not so) CLEAN
Recent trials have confirmed the effectiveness of endovascular mechanical thrombectomy for selected acute ischemic stroke patients with large artery occlusion, whose outcomes remained poor despite optimal medical management. Among many challenges for thrombectomy implementation is determining whether general anesthesia (GA) reduces the benefits of thrombectomy, as several recent studies suggest.1,2 Berkhemer et al.3 approach this question with a post hoc analysis of Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN), the first prospective, randomized stud...
Source: Neurology - August 14, 2016 Category: Neurology Authors: Crosby, G., Muir, K. W. Tags: Stroke prevention, Infarction EDITORIALS Source Type: research
Prediction of Blood-Brain Barrier Disruption and Intracerebral Hemorrhagic Infarction Using Arterial Spin-Labeling Magnetic Resonance Imaging Clinical Sciences
Background and Purpose—Arterial spin-labeling magnetic resonance imaging is sensitive for detecting hyperemic lesions (HLs) in patients with acute ischemic stroke. We evaluated whether HLs could predict blood–brain barrier (BBB) disruption and hemorrhagic transformation (HT) in acute ischemic stroke patients.Methods—In a retrospective study, arterial spin-labeling was performed within 6 hours of symptom onset before revascularization treatment in 25 patients with anterior circulation large vessel occlusion on baseline magnetic resonance angiography. All patients underwent angiographic procedures intended for endovasc...
Source: Stroke - December 22, 2016 Category: Neurology Authors: Takeya Niibo, Hajime Ohta, Shirou Miyata, Ichiro Ikushima, Kazuchika Yonenaga, Hideo Takeshima Tags: Imaging, Magnetic Resonance Imaging (MRI), Blood-Brain Barrier, Intracranial Hemorrhage, Ischemic Stroke Original Contributions Source Type: research
Intracranial Carotid Artery Calcification Relates to Recanalization and Clinical Outcome After Mechanical Thrombectomy Clinical Sciences
Conclusions—A larger amount of ICAC before mechanical thrombectomy in acute stroke patients is an indicator of worse postprocedural arterial revascularization and poorer functional outcome.
Source: Stroke - January 22, 2017 Category: Neurology Authors: Maria Hernandez–Perez, Daniel Bos, Laura Dorado, Karliȷn Pellikaan, Meike W. Vernooiȷ, Elena Lopez–Cancio, Natalia Perez de la Ossa, Meritxell Gomis, Carlos Castano, Josep Munuera, Josep Puig, Monica Millan, Antoni Davalos Tags: Computerized Tomography (CT), Imaging, Cerebrovascular Disease/Stroke, Cerebrovascular Procedures, Ischemic Stroke Original Contributions Source Type: research
Retinal and Ophthalmic Artery Studies in Ischemic Stroke Patients Using Fundus Photography and Transcranial Doppler Methods (P4.252)
Conclusions:Our study in a robust sample of non-severe stroke patients showed that abnormal retinal AVR is strongly associated with IS patients even after accounting for traditional risk factors. OA-TCD studies, on the other hand, did not have significant associations with stroke group.Disclosure: Dr. Patil has nothing to disclose. Dr. Narayan has nothing to disclose. Dr. Babu K has nothing to disclose.
Source: Neurology - April 17, 2017 Category: Neurology Authors: Patil, K., Narayan, S., Babu, K. R. Tags: Acute and Diagnostic Imaging in Ischemic Stroke and TIA Source Type: research
Recent Nationwide Trends in Transcranial Doppler Utilization During Acute Ischemic Stroke Hospitalizations (P4.296)
Conclusions:Over the last decade there has been a slight but steady decrease in the use of TCD during AIS hospitalizations in the US. Future studies should examine the cost-utility of TCD, especially with the advent of endovascular stroke treatment systems.Disclosure: Dr. Liu has nothing to disclose. Dr. Lunagariya has nothing to disclose. Dr. Patel has nothing to disclose. Dr. Patel has nothing to disclose. Dr. Feng has nothing to disclose. Dr. Ovbiagele has nothing to disclose.
Source: Neurology - April 17, 2017 Category: Neurology Authors: Liu, Y., Lunagariya, A., Patel, U., Patel, A., Feng, W., Ovbiagele, B. Tags: In-Hospital Stroke Care Source Type: research
Neurons Over Nephrons Clinical Sciences
Background and Purpose—Because of the perceived risk of contrast-induced acute kidney injury (AKI), many centers require pre-imaging serum creatinine levels, potentially delaying care. We performed a systematic review and meta-analysis evaluating AKI rates in patients with acute ischemic stroke receiving computed tomographic angiography (CTA) and computed tomographic perfusion (CTP).Methods—We searched MEDLINE, EMBASE, and the Web of Science through December 2016 for studies reporting on AKI in patients with acute ischemic stroke receiving CTA/CTP. Using a random-effects model, estimates were pooled across studies. Out...
Source: Stroke - June 26, 2017 Category: Neurology Authors: Waleed Brinjikji, Andrew M. Demchuk, Mohammad H. Murad, Alejandro A. Rabinstein, Robert J. McDonald, Jennifer S. McDonald, David F. Kallmes Tags: Imaging, Cerebrovascular Disease/Stroke, Ischemic Stroke Original Contributions Source Type: research
Acute Occlusions of Dual-Layer Carotid Stents After Endovascular Emergency Treatment of Tandem Lesions Clinical Sciences
Conclusions—The recently introduced dual-layer stents have a higher risk of acute occlusion compared with single-layer stents in the treatment of acute stroke.
Source: Stroke - July 24, 2017 Category: Neurology Authors: Umut Yilmaz, Heiko Korner, Ruben Muhl–Benninghaus, Andreas Simgen, Catherine Kraus, Silke Walter, Stefanie Behnke, Klaus Fassbender, Wolfgang Reith, Marcus M. Unger Tags: Revascularization, Stent, Cerebrovascular Disease/Stroke, Ischemic Stroke Original Contributions Source Type: research
Features of Patients Aged 80 Years or Older with Embolic Stroke of Undetermined Source
In this study, we investigated the features of this condition in patients greater than or equal to 80 years of age. Methods: All patients with acute ischemic stroke in our hospital underwent diffusion-weighted imaging, magnetic resonance angiography, T2-weighted imaging, and fluid-attenuated inversion recovery sequence imaging. Embolic stroke of undetermined source was defined as a radiologically confirmed nonlacunar brain infarct on diffusion-weighted imaging without (1) extracranial or intracranial atherosclerosis causing greater than or equal to 50% luminal stenosis in arteries supplying the ischemic area, (2) major-ris...
Source: Journal of Stroke and Cerebrovascular Diseases - October 24, 2018 Category: Neurology Authors: Tomonori Iwata, Kazunari Honma, Hideyuki Hanano, Ayana Kadokura, Eiichiro Nagata, Shunya Takizawa Source Type: research
Certification criteria for stroke units in Germany : Update 2018.
This article describes the revised criteria for certified stroke units (SU) in Germany that will apply from 1 October 2018. Due to the high level of quality only minor adjustments and specifications were necessary in many places and the majority of criteria remained unchanged. For the first time a uniform personnel quota of ≥1.75 full-time staff per monitor bed is defined, which is a better reflection of the treatment reality. The evidence-based process of acute vascular imaging using computed tomography angiography (CTA) and alternatively magnetic resonance angiography (MRA) is now defined as a minimum rate of≥20 % ...
Source: Der Nervenarzt - October 29, 2018 Category: Neurology Authors: Nabavi DG, Koennecke HC, Ossenbrink M, Grau A, Busse O, die Stroke Unit Kommission, den Zertifizierungsausschuss der DSG, den Vorstand der DSG, den Zertifizierungsausschuss der DSG Tags: Nervenarzt Source Type: research
Dynamic Detection of Thrombolysis in Embolic Stroke Rats by Synchrotron Radiation Angiography
AbstractA rodent model of embolic middle cerebral artery occlusion is used to mimic cerebral embolism in clinical patients. Thrombolytic therapy is the effective treatment for this ischemic injury. However, it is difficult to detect thrombolysis dynamically in living animals. Synchrotron radiation angiography may provide a novel approach to directly monitor the thrombolytic process and assess collateral circulation after embolic stroke. Thirty-six adult Sprague-Dawley rats underwent the embolic stroke model procedure and were then treated with tissue plasminogen activator. The angiographic images were obtained in vivo by s...
Source: Translational Stroke Research - January 24, 2019 Category: Neurology Source Type: research
