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Specialty: Neurology
Procedure: Angiography

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Total 2194 results found since Jan 2013.

Deep Learning-based Assessment of Internal Carotid Artery Anatomy to Predict Difficult Intracranial Access in Endovascular Recanalization of Acute Ischemic Stroke
ConclusionThe association between ICA angle and EVT duration could be verified and a  DL-based method for semi-automatic assessment with the potential for full automation was developed. More anatomical features of interest could be examined in a similar fashion.
Source: Clinical Neuroradiology - March 16, 2023 Category: Neurology Source Type: research

The effects of aneurysmal subarachnoid hemorrhage on cerebral vessel diameter and flow velocity
Transcranial Doppler flow velocity is used to monitor for cerebral vasospasm following aneurysmal subarachnoid hemorrhage. Generally, blood flow velocities appear inversely related to the square of vessel diameter representing local fluid dynamics. However, studies of flow velocity-diameter relationships are few, and may identify vessels for which diameter changes are better correlated with Doppler velocity. We therefore studied a large retrospective cohort with concurrent transcranial Doppler velocities and angiographic vessel diameters.
Source: Journal of Stroke and Cerebrovascular Diseases - March 16, 2023 Category: Neurology Authors: Richard L. Wang, Kevin J. Gingrich, Awais Vance, Mark D. Johnson, Babu G. Welch, David L. McDonagh Source Type: research

White matter hyperintensities had a correlation with the cerebral perfusion level, but no correlation with the severity of large vessel stenosis in the anterior circulation
ConclusionWhite matter hyperintensities may be attributed to cerebral hypoperfusion secondary to vascular stenosis but not directly to the severity of stenosis in the large vessels of anterior circulation. Moreover, longitudinal studies with sequential imaging exams may further reveal the impact of cerebral perfusion secondary to vascular stenosis on the development and progression of WMHs.
Source: Brain and Behavior - March 14, 2023 Category: Neurology Authors: Fanfan Feng, Weihao Kan, Hongchao Yang, Hongmei Ding, Xiaolong Wang, Ruiguo Dong Tags: ORIGINAL ARTICLE Source Type: research

Basilar artery plaque distribution is associated with pontine infarction and vertebrobasilar artery geometry
ConclusionBA plaque was related to PCCI, BA plaque distribution was associated with PI, and VBA configuration strongly influences BA plaque distribution.
Source: Frontiers in Neurology - March 13, 2023 Category: Neurology Source Type: research

Intracranial Hemorrhage as a Marker for Mycotic Aneurysm in Patients With Infective Endocarditis
Discussion Patients with left-sided and right-sided endocarditis with PFO and ICH on CNS imaging were more likely to have mycotic aneurysms detected through DSA than similar patients without ICH. Routine DSA screening for mycotic aneurysms may not be required in patients with endocarditis undergoing evaluation for valve surgery who present without ICH on CNS imaging.
Source: Neurology Clinical Practice - March 10, 2023 Category: Neurology Authors: Williams, T. J., Starr, M., El-Dalati, S. Tags: CT, MRI, Bacterial infections, Embolism, Intracerebral hemorrhage Research Article Source Type: research

Cerebral Hemodynamics Underlying Artery-to-Artery Embolism in Symptomatic Intracranial Atherosclerotic Disease
AbstractArtery-to-artery embolism (AAE) is a common stroke mechanism in intracranial atherosclerotic disease (ICAD), associated with a considerable risk of recurrent stroke. We aimed to investigate cerebral hemodynamic features associated with AAE in symptomatic ICAD. Patients with anterior-circulation, symptomatic ICAD confirmed in CT angiography (CTA) were recruited. We classified probable stroke mechanisms as isolated parent artery atherosclerosis occluding penetrating artery, AAE, hypoperfusion, and mixed mechanisms, largely based on infarct topography. CTA-based computational fluid dynamics (CFD) models were built to ...
Source: Translational Stroke Research - March 10, 2023 Category: Neurology Source Type: research

Spectrum of Complications and Complication Rates After Diagnostic Catheter Angiography in Neuroradiology
ConclusionThere is a  definite risk for complications after diagnostic angiography. Although a very broad spectrum of complications was considered, complications in the individual subgroups showed a low incidence.
Source: Clinical Neuroradiology - March 9, 2023 Category: Neurology Source Type: research

An Update on the Treatment of Basilar Artery Occlusion
AbstractPurpose of ReviewBasilar artery occlusion (BAO) is one of the most devastating forms of ischemic stroke with historically high mortality and disability rates. Here, we evaluate the current interventions available to clinicians and present the most recent evidence from randomized clinical trials in support of endovascular thrombectomy as the treatment of choice for BAO.Recent FindingsTwo recent randomized clinical trials (ATTENTION and BAOCHE) have provided convincing evidence of the superiority of endovascular thrombectomy over medical management for patients with BAO. Although questions regarding the generalizabil...
Source: Current Treatment Options in Neurology - March 3, 2023 Category: Neurology Source Type: research

A Novel Rat Model of Embolic Cerebral Ischemia Using a Cell-Implantable Radiopaque Hydrogel Microfiber
We present a novel rat model of focal infarct restricted to the middle cerebral artery territory using a radiopaque hydrogel microfiber positioned under fluoroscopic guidance. By comparing the use of stem cell-containing versus non-containing fibers in this stroke model, it would be possible to determine the efficacy of"pure" cell transplantation in treating stroke.
Source: Translational Stroke Research - March 3, 2023 Category: Neurology Source Type: research

Best Practice Recommendations for Stroke Vascular Imaging During Iodinated Contrast Shortage
GE Healthcare© announced on April 19, 2022, that their main factory and distributor of iodinated contrast had experienced a temporary shutdown because of COVID-19 outbreak in Shanghai, China. This, along with other supply chain issues, led to a worldwide shortage of iodinated contrast agents, Omnipaque and Visipaque. Our Comprehensive Stroke Center was confronted with the cascading effect of this iodinated contrast material shortage. We took immediate steps to revise our protocols and processes to continue to provide high-quality care to our stroke patients. A multidisciplinary working group comprised of representativ...
Source: Neurology Clinical Practice - March 3, 2023 Category: Neurology Authors: Bhole, R., Solenski, N. J., Donahue, J. H., Kellogg, R. T., Roach, N. N., Chapman, S. N., Worrall, B. B., Evans, A. J., Patel, S. H., Mukherjee, S., Park, M. S., Southerland, A. M. Tags: Decision analysis, Medical care, All Cerebrovascular disease/Stroke, All Practice Management Commentary Source Type: research

Computed Tomography of the Head
AbstractIn 1971, the first computed tomography (CT) scan was performed on a  patient’s brain. Clinical CT systems were introduced in 1974 and dedicated to head imaging only. New technological developments, broader availability, and the clinical success of CT led to a steady growth in examination numbers. Most frequent indications for non-contrast CT (NCCT) of the head i nclude the assessment of ischemia and stroke, intracranial hemorrhage and trauma, while CT angiography (CTA) has become the standard for first-line cerebrovascular evaluation; however, resulting improvements in patient management and clinical outcomes c...
Source: Clinical Neuroradiology - March 2, 2023 Category: Neurology Source Type: research

First-Pass Effect in M1-Occlusion Stroke Patients Treated with Combined Stent-Retriever/Large-Bore Distal Aspiration Catheter Thrombectomy
ConclusionOur results suggest that in combined LB-DAC/stent-retriever thrombectomy, a  larger aspiration catheter inner diameter is associated with higher rates of FPE and mFPE.
Source: Clinical Neuroradiology - March 1, 2023 Category: Neurology Source Type: research

Pipeline embolization devices for the treatment of nonsaccular aneurysms in pediatric patients
ConclusionsThe use of PEDs to treat pediatric nonsaccular aneurysms is feasible, with a high rate of complete occlusion of the aneurysm and favorable follow-up outcomes.
Source: Frontiers in Neurology - February 28, 2023 Category: Neurology Source Type: research