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Total 5918 results found since Jan 2013.

Prediction of the Multisegment Clot Sign on Dynamic CT Angiography of Cardioembolic Stroke ADULT BRAIN
CONCLUSIONS: The presence of the multisegment clot sign on dynamic CTA specifically indicates intracranial large-artery occlusion caused by an embolism from a cardiac source, which may be useful for acute management and secondary prevention of stroke.
Source: American Journal of Neuroradiology - April 10, 2018 Category: Radiology Authors: Chen, Z., Shi, F., Zhang, M., Gong, X., Lin, L., Lou, M. Tags: ADULT BRAIN Source Type: research

Disrupted functional network integrity and flexibility after stroke: Relation to motor impairments
Publication date: Available online 9 June 2018 Source:NeuroImage: Clinical Author(s): Sara Larivière, Nick S. Ward, Marie-Hélène Boudrias Previous studies investigating brain activation present during upper limb movement after stroke have greatly detailed activity alterations in the ipsi- and contralesional primary motor cortices (M1). Despite considerable interest in M1, investigations into the integration and coordination of large-scale functional networks subserving motor, sensory, and cognitive control after stroke remain scarce. The purpose of this study was to assess non-static functional connectivity within whol...
Source: NeuroImage: Clinical - June 9, 2018 Category: Radiology Source Type: research

Bihemispheric alterations in myelination in children following unilateral perinatal stroke
ConclusionMyelination of apparently uninjured brain in both the ipsilesional and contralesional hemispheres is decreased after perinatal stroke. Differences appear to radiate outward from the lesion. Further study is needed to determine clinical significance.
Source: NeuroImage: Clinical - July 5, 2018 Category: Radiology Source Type: research

Disrupted functional network integrity and flexibility after stroke: Relation to motor impairments
Publication date: 2018Source: NeuroImage: Clinical, Volume 19Author(s): Sara Larivière, Nick S. Ward, Marie-Hélène BoudriasAbstractPrevious studies investigating brain activation present during upper limb movement after stroke have greatly detailed activity alterations in the ipsi- and contralesional primary motor cortices (M1). Despite considerable interest in M1, investigations into the integration and coordination of large-scale functional networks subserving motor, sensory, and cognitive control after stroke remain scarce. The purpose of this study was to assess non-static functional connectivity within whole-brain ...
Source: NeuroImage: Clinical - July 5, 2018 Category: Radiology Source Type: research

Bihemispheric alterations in myelination in children following unilateral perinatal stroke
ConclusionMyelination of apparently uninjured brain in both the ipsilesional and contralesional hemispheres is decreased after perinatal stroke. Differences appear to radiate outward from the lesion. Further study is needed to determine clinical significance.
Source: NeuroImage: Clinical - July 19, 2018 Category: Radiology Source Type: research

Diagnostic Accuracy of Electrocardiogram-Gated Thoracic Computed Tomography Angiography without Heart Rate Control for Detection of Significant Coronary Artery Stenosis in Patients with Acute Ischemic Stroke: A Comparative Study.
Conclusion: Electrocardiogram-gated TCTA without HR control facilitates the identification of significant coronary stenosis in patients with ischemic stroke. PMID: 30174480 [PubMed - in process]
Source: Korean Journal of Radiology - September 5, 2018 Category: Radiology Tags: Korean J Radiol Source Type: research

Consensus Statements by Korean Society of Interventional Neuroradiology and Korean Stroke Society: Hyperacute Endovascular Treatment Workflow to Reduce Door-to-Reperfusion Time.
Authors: Kim DH, Kim B, Jung C, Nam HS, Lee JS, Kim JW, Lee WJ, Seo WK, Heo JH, Baik SK, Kim BM, Rha JH Abstract Recent clinical trials demonstrated the clinical benefit of endovascular treatment (EVT) in patients with acute ischemic stroke due to large vessel occlusion. These trials confirmed that good outcome after EVT depends on the time interval from symptom onset to reperfusion and that in-hospital delay leads to poor clinical outcome. However, there has been no universally accepted in-hospital workflow and performance benchmark for rapid reperfusion. Additionally, wide variety in workflow for EVT is present b...
Source: Korean Journal of Radiology - September 5, 2018 Category: Radiology Tags: Korean J Radiol Source Type: research

Thalamic diaschisis following perinatal stroke is associated with clinical disability
ConclusionBilateral thalamic volume changes occur after perinatal stroke. Ipsilesional volume loss is not associated with clinical motor function. Contralesional volume is inversely correlated with clinical motor function, suggesting the thalamus is involved in the known developmental plasticity that occurs in the contralesional hemisphere after early unilateral injury.
Source: NeuroImage: Clinical - January 5, 2019 Category: Radiology Source Type: research

Structural covariance in subcortical stroke patients measured by automated MRI-based volumetry
Publication date: Available online 22 January 2019Source: NeuroImage: ClinicalAuthor(s): Caihong Wang, Lei Zhao, Yishan Luo, Jingchun Liu, Peifang Miao, Sen Wei, Lin Shi, Jingliang ChengAbstractA network-level investigation of the volumetric changes of subcortical stroke patients is still lacking. Here, we explored the alterations of structural covariance caused by subcortical stroke with automated brain volumetry. T1-weighed brain MRI scans were obtained from 63 normal controls (NC), 46 stroke patients with infarct in left internal capsule (CI_L), 33 stroke patients with infarct in right internal capsule (CI_R). We perfor...
Source: NeuroImage: Clinical - January 22, 2019 Category: Radiology Source Type: research

Characteristics of Large-Vessel Occlusion Associated with COVID-19 and Ischemic Stroke INTERVENTIONAL
SUMMARY: The mechanisms and phenotype of ischemic stroke associated with coronavirus disease 2019 (COVID-19) remain uncertain. A retrospective study was conducted in patients with COVID-19 presenting with ischemic stroke from March 1 to May 25, 2020, and cases with large-vessel occlusion were identified. To provide baseline institutional stroke data within and outside the COVID-19 pandemic, all consecutive ischemic stroke and TIA admissions (COVID and non-COVID) to the hospital during a 10-week period from March 1 to May 10, 2020, were collected and compared with data from the same time period in 2019. Among 20 patients wi...
Source: American Journal of Neuroradiology - December 11, 2020 Category: Radiology Authors: John, S., Kesav, P., Mifsud, V. A., Piechowski-Jozwiak, B., Dibu, J., Bayrlee, A., Elkambergy, H., Roser, F., Elhammady, M. S., Zahra, K., Hussain, S. I. Tags: INTERVENTIONAL Source Type: research

Association of carotid ultrasonography with perioperative stroke after thoracic aortic aneurysm treatment: a retrospective study
ConclusionsLower EDV and higher RI of bilateral CCAs were significantly associated with perioperative stroke after TAA treatment. Thus, CUS findings may help predict the occurrence of perioperative stroke.
Source: Journal of Medical Ultrasonics - April 21, 2021 Category: Radiology Source Type: research

Statistical shape analysis of the left atrial appendage predicts stroke in atrial fibrillation
AbstractThe shape of the left atrium (LA) and left atrial appendage (LAA) have been shown to predict stroke in patients with atrial fibrillation (AF). Prior studies rely on qualitative assessment of shape, which limits reproducibility and clinical utility. Statistical shape analysis (SSA) allows for quantitative assessment of shape. We use this method to assess the shape of the LA and LAA and predict stroke in patients with AF. From a database of AF patients who had previously undergone MRI of the LA, we identified 43 patients with AF who subsequently had an ischemic stroke. We also identified a cohort of 201 controls with...
Source: The International Journal of Cardiovascular Imaging - May 6, 2021 Category: Radiology Source Type: research

Mechanical thrombectomy is efficacious in patients with pre ‐stroke moderate disability
ConclusionPatients with pre-stroke moderate disability may benefit from MT if they are appropriately selected. This may result in fewer patients requiring nursing home placement and less financial burden on the public health system, indicating significant savings are possible.
Source: Journal of Medical Imaging and Radiation Oncology - June 17, 2021 Category: Radiology Authors: Tara Nababan, Timothy J. Phillips, Graeme J. Hankey, Matthew T. Crockett, Albert Ho Yuen Chiu, Tejinder P. Singh, David Blacker, William McAuliffe Tags: Medical Imaging —Original Article Source Type: research

Stroke Mimics in the Acute Setting: Role of Multimodal CT Protocol ADULT BRAIN
CONCLUSIONS: Multimodal CT demonstrated low sensitivity but high specificity in the diagnosis of stroke mimics in the acute setting. The high specificity of multimodal CT allows ruling out stroke and thereby avoiding unnecessary revascularization treatment in patients with diagnosis of a stroke mimic.
Source: American Journal of Neuroradiology - February 4, 2022 Category: Radiology Authors: Prodi, E., Danieli, L., Manno, C., Pagnamenta, A., Pravata, E., Roccatagliata, L., Städler, C., Cereda, C. W., Cianfoni, A. Tags: ADULT BRAIN Source Type: research