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Specialty: Neurology
Procedure: Angiography

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Total 2194 results found since Jan 2013.

Intracranial Vessel Wall MRI in Cryptogenic Stroke and Intracranial Vasculitis
Introduction: Intracranial vasculopathies easily elude classic stroke work-up. We aim in this work to show that vessel wall-MRI could prove an efficient alternative to digital subtraction angiography for the diagnosis of intracranial vasculopathies by identifying intracranial arterial vessel walls anomalies and contrast enhancement, suggestive of angiitis of the central nervous system. Materials and methods: Clinical and imaging characteristics of stroke patients diagnosed with primary angiitis of the central nervous system based on vessel wall-MRI were retrospectively reviewed and the clinical and imaging features of angi...
Source: Journal of Stroke and Cerebrovascular Diseases - March 5, 2020 Category: Neurology Authors: Virginie Destrebecq, Niloufar Sadeghi, Boris Lubicz, Lise Jodaitis, Noemie Ligot, Gilles Naeije Source Type: research

Interactive effect of susceptibility-diffusion mismatch and recanalization status on clinical outcome in large vessel occlusion stroke
Objective: To investigate the interactive effect of susceptibility-diffusion mismatch and recanalization status on clinical outcome in patients with acute ischemic stroke due to large vessel occlusion.Methods: In this prospective study, consecutive ischemic stroke patients admitted within 24 h from symptom onset underwent emergency multimodal MRI at admission, including diffusion-weighted imaging (DWI), susceptibility-weighted imaging (SWI), and time-of-flight magnetic resonance angiography (TOF-MRA).
Source: Journal of Stroke and Cerebrovascular Diseases - August 15, 2020 Category: Neurology Authors: Haifei Jiang, Yiqun Zhang, Jiangxia Pang, Han-Cheng Qiu, Ao-Fei Liu, Chen Li, Ji Zhou, Min Jin, Fengyuan Man, Wei-Jian Jiang Source Type: research

The clinical value of head-neck joint high-resolution vessel wall imaging in ischemic stroke
Imaging of intracranial vasculature is an important aspect of the workup for patients with stroke, transient ischemic attack (TIA), or suspected cerebrovascular disease1. In clinical setting, brain magnetic resonance imaging (MRI) plus intracranial three-dimensional time-of-flight magnetic resonance angiography (3D TOF MRA) is one of the most widely used imaging packages for patients who were suspected of ischemic stroke. Recently, high resolution intracranial vessel wall imaging (IVWI) , which is capable of exhibiting intracranial lesions directly including identifying the etiologies of intracranial stenosis, evaluating p...
Source: Journal of Stroke and Cerebrovascular Diseases - August 15, 2020 Category: Neurology Authors: Ming-Li Li, Qian-Qian Lin, Yi-Tong Liu, Bo Hou, Feng Feng, Zheng-Yu Jin, Wei-Hai Xu Source Type: research

Asymmetry of medullary veins on multiphase CT-angiography in patients with acute ischemic stroke
The management of acute ischemic stroke (AIS) has rapidly evolved over the last decade with the advancement in neuroimaging selection methods and endovascular treatment techniques. CT perfusion (CTP) with automated post-processing is the most widely used technique for extended-time window selection of patients for intra-arterial interventions based on recent clinical trials.1,2 CTP provides predictive information about stroke outcome, however the predictive ability remains moderate with area under the curve (AUC) approximately 0.6.
Source: Journal of Stroke and Cerebrovascular Diseases - August 11, 2020 Category: Neurology Authors: A.A. Drozdov, R. Javan, C.R. Leon Guerrero, A.D. Sparks, M.R. Taheri Source Type: research

Bilateral large vessel occlusion causing massive ischemic stroke in a covid-19 patient
The case of a 70-year-old male presenting an ischemic stroke related to COVID-19 infection is described. He was initially admitted to the hospital with respiratory insufficiency syndrome secondary to pneumonia caused by SARS Co2. In the next days, he developed rapid neurological deterioration characterized by drowsiness which progressed to deep coma. D-dimer was elevated. Brain CT scan showed bilateral massive ischemic stroke located in the anterior circulation, CT angiogram showed occlusion in the left internal carotid artery and the right middle cerebral artery.
Source: Journal of Stroke and Cerebrovascular Diseases - January 7, 2021 Category: Neurology Authors: Luis A. Robles Tags: Case Report Source Type: research

Long-Term Outcomes of Stroke or Transient Ischemic Attack after Non-Emergency Percutaneous Coronary Intervention
Elective percutaneous coronary intervention is increasing in volume, which may be due to an increased use of CT coronary angiography as a first-line investigation for the evaluation of chest pain.1,2 Stroke is a debilitating neurological complication with increasing incidence after PCI in recent years, due to an increasing complexity of patients.3 Large observational and randomized controlled studies found that peri-procedural stroke occurred in 0.13-0.4% of unselected patients who underwent PCI.
Source: Journal of Stroke and Cerebrovascular Diseases - April 14, 2021 Category: Neurology Authors: Jamie SY Ho, Ching-Hui Sia, Andie Hartanto Djohan, Rodney Yu-Hang Soh, Benjamin YQ Tan, Leonard LL Yeo, Hui-Wen Sim, Tiong-Cheng Yeo, Huay-Cheem Tan, Mark Yan-Yee Chan, Joshua Ping-Yun Loh Source Type: research

Platelet Activation and Chemokine Release Are Related to Local Neutrophil-Dominant Inflammation During Hyperacute Human Stroke
This study provides human evidence of cerebral platelet activation and platelet-neutrophil interactions during AIS and points to the relevance of per-ischemic thrombo-inflammatory mechanisms to impaired reperfusion and worse functional outcome following recanalization.
Source: Translational Stroke Research - August 28, 2021 Category: Neurology Source Type: research

Caveats to Acute Imaging for Acute Stroke in the Setting of Venoarterial Extracorporeal Membrane Oxygenation
Venoarterial extracorporeal membrane oxygenation (VA-ECMO) is increasingly used for cardiorespiratory support in medically refractory cases. The high rate of neurologic complications, specifically cerebrovascular disorders such as acute ischemic stroke, in VA-ECMO patients frequently prompts the acquisition of neuroimaging studies such as CT with angiography and perfusion imaging. Clinicians must be familiar with the ECMO-related artifacts when interpreting such studies. Here, we describe a case of asymmetric contrast opacification in a VA-ECMO patient with axillary artery cannulation.
Source: Neurology Clinical Practice - December 13, 2021 Category: Neurology Authors: Viamonte, M. A., Yu, J., Echevarria, F. D., Nagae, L., Youn, T. S., Tahsili-Fahadan, P., Simpkins, A. N. Tags: Stroke in young adults, CT, All Cerebrovascular disease/Stroke Case Source Type: research

CT Perfusion Maps Improve Detection of M2-MCA Occlusions in Acute Ischemic Stroke
A growing body of literature supports mechanical thrombectomy-based endovascular therapy for M2-MCA occlusions in eligible patients with acute ischemic stroke (AIS).1 –5 This is because endovascular treatment for M2-MCA occlusions is technically feasible and leads to improved patient outcomes, despite a potential increased risk of hemorrhage.4,5 Not uncommonly, these patients undergo a single or multi-phase CT angiogram (CTA) study for LVO detection. In patient s who present in the late stroke window (6–24 h since last known normal), the CT Perfusion (CTP) study is generally performed along with a CTA study to aid in patient triage.
Source: Journal of Stroke and Cerebrovascular Diseases - April 14, 2022 Category: Neurology Authors: Girish Bathla, Ravishankar Pillenahalli Maheshwarappa, Neetu Soni, Minako Hayakawa, Sarv Priya, Edgar Samaniego, Santiago Ortega-Gutierrez, Colin P. Derdeyn Source Type: research

Hypoperfusion Intensity Ratio is Associated with Stroke Mechanism in Patients Undergoing Mechanical Thrombectomy
Hypoperfusion Intensity Ratio (HIR), defined as Tmax>10s/Tmax>6s on computed tomography perfusion (CTP), and stroke mechanisms have been independently correlated with angiographic collaterals and patient outcomes. Slowly developing atherosclerotic stenosis may foster collateral development, whereas cardioembolic occlusion may occur before collaterals mature. We hypothesized that favorable HIR is associated with large artery atherosclerosis (LAA) stroke mechanism and good clinical outcome.
Source: Journal of Stroke and Cerebrovascular Diseases - May 9, 2022 Category: Neurology Authors: Ahmad A. Ballout, Richard B Libman, Julia R. Schneider, Marc S. Ayoub, Jason J. Wang, Athos Patsalides, Jeffrey M Katz Source Type: research

Feasibility of deconvolution-based multiphase CT angiography perfusion maps in acute ischemic stroke: Simulation and concordance with CT perfusion
Integration of CT perfusion (CTP) with requisite non-contrast CT and CT angiography (CTA) stroke imaging may allow efficient stroke lesion volume measurement. Using surrogate images from CTP, we simulated the feasibility of using multiphase CTA (mCTA) to generate perfusion maps and assess target mismatch profiles.
Source: Journal of Stroke and Cerebrovascular Diseases - October 29, 2022 Category: Neurology Authors: Kevin J. Chung, Alexander V. Khaw, Sachin K. Pandey, Donald H. Lee, Jennifer L. Mandzia, Ting-Yim Lee Source Type: research

Prognostic Value of Venous Outflow Profiles on Multiphase CT Angiography for the Patients with Acute Ischemic Stroke After Endovascular Thrombectomy
This study supports that favorable peak venous VO profiles on mCTA might be a promising biomarker in predicting the good outcome in patients with AIS after EVT.
Source: Translational Stroke Research - September 5, 2023 Category: Neurology Source Type: research

Evolution of Reperfusion Therapies for Acute Brain and Acute Myocardial Ischemia: A Systematic, Comparative Analysis Original Contributions
Conclusions— Reperfusion therapies developed more slowly and remain less effective for cerebral than cardiac ischemia. Further, cerebral circulation–specific technical advances are required for physicians to become as capable at safely restoring blood flow to the ischemic brain as the ischemic heart.
Source: Stroke - December 24, 2012 Category: Neurology Authors: Patel, R. D., Saver, J. L. Tags: Catheter-based coronary interventions: stents, Acute coronary syndromes, Acute myocardial infarction, Acute Cerebral Infarction, Acute Stroke Syndromes, Thrombolysis Original Contributions Source Type: research

Role of Balloon-Expandable Stents in Intracranial Atherosclerotic Disease in a Series of 182 Patients Brief Reports
Conclusions— Treatment of intracranial atherosclerotic disease with balloon-expandable intracranial stents is a safe and effective method with acceptable adverse events, especially in patients who failed medical therapy and were symptomatic despite being on optimum medical therapy.
Source: Stroke - June 24, 2013 Category: Neurology Authors: Alurkar, A., Karanam, L. S. P., Oak, S., Nayak, S., Sorte, S. Tags: Angiography, Angioplasty and Stenting, Other Stroke Brief Reports Source Type: research

CT Perfusion in Acute Stroke: Added Value or Waste of Time? Letters to the Editor
Source: Stroke - August 26, 2013 Category: Neurology Authors: Sharma, M., Pelz, D. M. Tags: Angiography, Computerized tomography and Magnetic Resonance Imaging, Other imaging, Pathology of Stroke Letters to the Editor Source Type: research