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Total 5918 results found since Jan 2013.

Intracranial Spotty Calcium Predicts Recurrent Stroke in Patients with Symptomatic Intracranial Atherosclerotic Stenosis
ConclusionIn patients with symptomatic ICAS, intracranial spotty calcium is an independent predictor of recurrent ischemic stroke, which will further facilitate risk stratification and suggest that more aggressive treatment should be considered for these patients.
Source: Klinische Neuroradiologie - June 7, 2023 Category: Radiology Source Type: research

Intracranial Atherosclerotic Plaque Enhancement in Patients with Ischemic Stroke BRAIN
CONCLUSIONS: Strong pathologic enhancement of intracranial atherosclerotic plaque was seen in all patients imaged within 4 weeks of ischemic stroke in the vessel supplying the stroke territory. The strength and presence of enhancement of the atherosclerotic plaque decreased with increasing time after the ischemic event. These findings suggest a relationship between enhancing intracranial atherosclerotic plaque and acute ischemic stroke.
Source: American Journal of Neuroradiology - February 13, 2013 Category: Radiology Authors: Skarpathiotakis, M., Mandell, D. M., Swartz, R. H., Tomlinson, G., Mikulis, D. J. Tags: BRAIN Source Type: research

Comparing different analysis methods for quantifying the MRI amide proton transfer (APT) effect in hyperacute stroke patients
In this study, the widely used asymmetry analysis and a model‐based analysis were both assessed on APT data collected from healthy subjects (n = 2) and hyperacute stroke patients (n = 6, median imaging time after onset = 2 hours 59 minutes). It was found that the model‐based approach was able to quantify the APT effect with the lowest variation in grey and white matter (≤ 13.8 %) and the smallest average contrast between these two tissue types (3.48 %) in the healthy volunteers. The model‐based approach also performed quantitatively better than the other measures in the hyperacute stroke patient APT data, where the...
Source: NMR in Biomedicine - June 1, 2014 Category: Radiology Authors: Y. K. Tee, G. W. J. Harston, N. Blockley, Thomas W. Okell, J. Levman, F. Sheerin, M. Cellerini, P. Jezzard, J. Kennedy, S. J. Payne, M. A. Chappell Tags: Research article Source Type: research

The usefulness of diffusion-weighted/fluid-attenuated inversion recovery imaging in the diagnostics and timing of lacunar and nonlacunar stroke
Conclusions The presence of acute ischemic lesions only in DWI can help to identify both lacunar and nonlacunar stroke patients who are in the 4.5 h time window for intravenous thrombolysis with high specificity.
Source: Neuroradiology - September 30, 2014 Category: Radiology Source Type: research

False-Negative Diffusion-Weighted Imaging in Acute Stroke and its Frequency in Anterior and Posterior Circulation Ischemia
ConclusionsFalse-negative DWI findings in acute stroke can be observed both in association with the posterior circulation/small lesions and the anterior circulation/large lesions.
Source: Journal of Computer Assisted Tomography - September 1, 2014 Category: Radiology Tags: Neuroradiology Source Type: research

Clinical and imaging features associated with intracranial internal carotid artery calcifications in patients with ischemic stroke
Conclusion ICAC burden reflects a continuum of atherosclerotic disease involving carotid arteries together with other craniocervical vascular beds. ICAC is significantly associated with stroke of large vessel or cardioembolic origin. This information might help the clinician in prioritizing etiologic work-up in the acute period.
Source: Neuroradiology - January 30, 2015 Category: Radiology Source Type: research

Statin Therapy Does Not Affect the Radiographic and Clinical Profile of Patients with TIA and Minor Stroke EDITOR'S CHOICE
CONCLUSIONS: Prestroke or early-stroke statin therapy was not associated with a reduction in the number of DWI lesions, infarct volume, or improved clinical or functional outcome at 3 months. The effect of acute statin treatment in patients with ischemic stroke/TIA remains unclear and needs further investigation.
Source: American Journal of Neuroradiology - June 11, 2015 Category: Radiology Authors: Asdaghi, N., Coulter, J. I., Modi, J., Camden, M. C., Qazi, A., Goyal, M., Rundek, T., Coutts, S. B. Tags: EDITOR ' S CHOICE Source Type: research

Non-stenotic intracranial arteries have atherosclerotic changes in acute ischemic stroke patients: a 3T MRI study
Conclusion In patients with acute ischemic stroke, wall thickening and positive remodeling are evident in non-stenotic intracranial arteries. This change is more definite in stroke subtype that is related to atherosclerosis than that in other subtypes which are not.
Source: Neuroradiology - July 22, 2015 Category: Radiology Source Type: research

Aqueductal Stroke Volume: Comparisons with Intracranial Pressure Scores in Idiopathic Normal Pressure Hydrocephalus ADULT BRAIN
CONCLUSIONS: Aqueductal stroke volume does not reflect intracranial pressure pulsatility or symptom score, but rather aqueduct area and ventricular volume. The results do not support the use of aqueductal stroke volume for selecting patients for shunting.
Source: American Journal of Neuroradiology - September 10, 2015 Category: Radiology Authors: Ringstad, G., Emblem, K. E., Geier, O., Alperin, N., Eide, P. K. Tags: ADULT BRAIN Source Type: research

Can MRI quantification help evaluate stroke age?
Conclusions The quantification of MRI signal may be a helpful tool for stroke dating but cannot outperform the visual estimation of stroke lesion age.
Source: Journal of Neuroradiology - January 16, 2016 Category: Radiology Source Type: research

Impact of Implementing Cardiac CT in Evaluating Patients Suspected of Cardioembolic Stroke
Conclusions: Implementing cardiac CT in assessing patients suspected of cardioembolic stroke added value to echocardiographic evaluation, by detecting major embolic potential findings. In addition, cardiac CT revealed additional potentially significant stroke-unrelated findings and CAD.
Source: Journal of Computer Assisted Tomography - May 1, 2016 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Are we armed with the right data? Pooled individual data review of biomarkers in people with severe upper limb impairment after stroke
Publication date: Available online 24 September 2016 Source:NeuroImage: Clinical Author(s): Kathryn S Hayward, Julia Schmidt, Keith R Lohse, Sue Peters MPT, Julie Bernhardt, Natasha A Lannin, Lara A Boyd To build an understanding of the neurobiology underpinning arm recovery in people with severe arm impairment due to stroke, we conducted a pooled individual data systematic review to: 1) characterize brain biomarkers; 2) determine relationship(s) between biomarkers and motor outcome; and 3) establish relationship(s) between biomarkers and motor recovery. Three electronic databases were searched up to October 2, 2015. Elig...
Source: NeuroImage: Clinical - September 23, 2016 Category: Radiology Source Type: research

Magnetic resonance imaging characteristics of ischemic stroke in an Afro-Caribbean population: A 1-year prospective MRI study on 534  consecutive patients
Conclusion Our prospective, consecutive, ischemic stroke series gives a comprehensive description of ischemic stroke imaging patterns and etiologic distributions in an Afro-Caribbean population with high socio-economic status. Our patients’ stroke characteristics are close to those of European-descent populations.
Source: Journal of Neuroradiology - November 8, 2016 Category: Radiology Source Type: research

Mechanical Thrombectomy in Patients with Acute Ischemic Stroke and Lower NIHSS Scores: Recanalization Rates, Periprocedural Complications, and Clinical Outcome INTERVENTIONAL
CONCLUSIONS: The clinical outcome of patients undergoing mechanical thrombectomy for acute ischemic stroke with mild stroke due to large-vessel occlusion appears to be predominately favorable, even in a prolonged time window. However, although infrequent, angiographic complications could impair clinical outcome. Future randomized controlled trials should assess the benefit compared with the best medical treatment.
Source: American Journal of Neuroradiology - November 14, 2016 Category: Radiology Authors: Pfaff, J., Herweh, C., Pham, M., Schönenberger, S., Nagel, S., Ringleb, P. A., Bendszus, M., Möhlenbruch, M. Tags: INTERVENTIONAL Source Type: research

Site and Rate of Occlusive Disease in Cervicocerebral Arteries: A CT Angiography Study of 2209 Patients with Acute Ischemic Stroke ADULT BRAIN
CONCLUSIONS: CTA in patients with acute ischemic stroke shows large individual variations of occlusion sites and degrees. Approximately half of such patients have no visible occlusive disease, and 40% imaged within 6 hours show large, proximal segment occlusions amenable to endovascular therapy. These findings show the importance of early noninvasive imaging of extra- and intracranial arteries for identifying occlusive disease, planning recanalization strategies, and designing interventional trials.
Source: American Journal of Neuroradiology - May 15, 2017 Category: Radiology Authors: Rotzinger, D. C., Mosimann, P. J., Meuli, R. A., Maeder, P., Michel, P. Tags: ADULT BRAIN Source Type: research