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Total 5918 results found since Jan 2013.

Mechanical Embolectomy for Acute Ischemic Stroke in the Anterior Cerebral Circulation: The Gothenburg Experience during 2000-2011 EDITOR'S CHOICE
CONCLUSIONS: A high recanalization rate was obtained with the Amplatz GooseNeck snare without any device-related complications. Favorable outcome, mortality, and symptomatic intracerebral hemorrhage are comparable with results of newer embolectomy devices.
Source: American Journal of Neuroradiology - October 8, 2014 Category: Radiology Authors: Rentzos, A., Lundqvist, C., Karlsson, J.- E., Vilmarsson, V., Schnabel, K., Wikholm, G. Tags: EDITOR ' S CHOICE Source Type: research

Spontaneous echo‐contrast in the internal jugular veins of patients with ischemic stroke
ConclusionsInternal jugular vein SEC was found more frequently in stroke patients than in controls. However, local as well as systemic factors must be considered in the interpretation of this finding. © 2014 Wiley Periodicals, Inc. J Clin Ultrasound, 2014
Source: Journal of Clinical Ultrasound - October 27, 2014 Category: Radiology Authors: Jay Chol Choi, Yun‐Hee Oh, Joong Goo Kim, Hyeon‐Ju Kim, Mi‐Hee Kong, Dong‐Guk Paeng, Nerissa U. Ko, J. Donald Easton Tags: Research Article Source Type: research

Cortical thickness estimation in longitudinal stroke studies: A comparison of 3 measurement methods
In this study, we imaged a group of patients in the first month after stroke and at 3 months. We compared three methods of estimating cortical thickness on unmasked images: one surface-based (FreeSurfer) and two voxel-based methods (a Laplacian method and a registration method, DiRecT). We used three benchmarks for our analyses: accuracy of segmentation (especially peri-lesional performance), reproducibility, and biological validity. We found important differences between these methods in cortical thickness values and performance in high curvature areas and peri-lesional regions, but similar reproducibility metrics. FreeS...
Source: NeuroImage: Clinical - November 3, 2014 Category: Radiology Source Type: research

Imaging of amide proton transfer and nuclear Overhauser enhancement in ischemic stroke with corrections for competing effects
This study may help us to better understand the contrast mechanisms of APT and NOE imaging in ischemic stroke, and may also establish a framework for future stroke measurements using CEST imaging with spillover, MT and T1 corrections. Copyright © 2014 John Wiley & Sons, Ltd. Amide proton transfer (APT) and nuclear Overhauser enhancement (NOE) images were acquired in rats with ischemic stroke and analyzed using corrections for radiofrequency (RF) spillover, magnetization transfer (MT) and T1 effects. Compared with the conventional three‐offset method (APT*), the corrected APT (apparent exchange‐dependent relaxation...
Source: NMR in Biomedicine - December 7, 2014 Category: Radiology Authors: Hua Li, Zhongliang Zu, Moritz Zaiss, Imad S. Khan, Robert J. Singer, Daniel F. Gochberg, Peter Bachert, John C. Gore, Junzhong Xu Tags: Research article Source Type: research

Quantitative Assessment of Mitral Inflow and Aortic Outflow Stroke Volumes by 3-Dimensional Real-time Full-Volume Color Flow Doppler Transthoracic Echocardiography: An In Vivo Study
Conclusions— Real-time 3D color flow Doppler quantification is feasible and accurate for measurement of mitral inflow and LVOT outflow stroke volumes over a range of hemodynamic conditions.
Source: Journal of Ultrasound in Medicine - December 26, 2014 Category: Radiology Authors: Shimada, E., Zhu, M., Kimura, S., Streiff, C., Houle, H., Datta, S., Sahn, D. J., Ashraf, M. Tags: Original Research Source Type: research

Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection BRAIN
CONCLUSIONS: Our predictive model is validated in a much larger patient cohort. Outcome may be predicted in up to two-thirds of patients, and thresholds are affected by stroke side and reperfusion therapy.
Source: American Journal of Neuroradiology - February 11, 2015 Category: Radiology Authors: Schaefer, P. W., Pulli, B., Copen, W. A., Hirsch, J. A., Leslie-Mazwi, T., Schwamm, L. H., Wu, O., Gonzalez, R. G., Yoo, A. J. Tags: BRAIN Source Type: research

Imaging Biomarkers in Acute Ischemic Stroke Trials: A Systematic Review RESEARCH PERSPECTIVES
CONCLUSIONS: Imaging biomarkers offer the opportunity to refine the trial cohort by minimizing participant variation, to decrease sample size, and to personalize treatment approaches for those who stand to benefit most. However, within imaging modalities, there has been little consistency between stroke trials. Greater effort to prospectively use consistent imaging biomarkers should help improve the development of novel treatment strategies in acute stroke and improve comparison between studies.
Source: American Journal of Neuroradiology - May 15, 2015 Category: Radiology Authors: Harston, G. W. J., Rane, N., Shaya, G., Thandeswaran, S., Cellerini, M., Sheerin, F., Kennedy, J. Tags: RESEARCH PERSPECTIVES Source Type: research

A Combined Arterial and Venous Grading Scale to Predict Outcome in Anterior Circulation Ischemic Stroke
CONCLUSIONCRISP grading was precise in predicting stroke outcomes when compared to individual imaging scales including arterial collateral grading, PRECISE score and CTA‐SI ASPECTS in patients with proximal arterial occlusion in the anterior circulation.
Source: Journal of Neuroimaging - May 1, 2015 Category: Radiology Authors: Rajsrinivas Parthasarathy, Sung‐II Sohn, Thomas Jeerakathil, Mahesh P. Kate, Sachin M. Mishra, Vivek K. Nambiar, Aftab Ahmad, Bijoy K. Menon, Ashfaq Shuaib Tags: Clinical Investigative Study Source Type: research

Histologic Analysis of Retrieved Clots in Acute Ischemic Stroke: Correlation with Stroke Etiology and Gradient-Echo MRI INTERVENTIONAL
CONCLUSIONS: The histologic composition of clots retrieved from cerebral arteries in patients with acute stroke differs between those with cardioembolism and large-artery atherosclerosis. In addition, a susceptibility vessel sign on gradient-echo imaging is strongly associated with a high proportion of red blood cells and a low proportion of fibrin and platelets in retrieved clots.
Source: American Journal of Neuroradiology - September 10, 2015 Category: Radiology Authors: Kim, S. K., Yoon, W., Kim, T. S., Kim, H. S., Heo, T. W., Park, M. S. Tags: INTERVENTIONAL Source Type: research

Topography of acute stroke in a sample of 439 right brain damaged patients
Publication date: Available online 17 November 2015 Source:NeuroImage: Clinical Author(s): Christoph Sperber, Hans-Otto Karnath Knowledge of the typical lesion topography and volumetry is important for clinical stroke diagnosis as well as for anatomo-behavioural lesion mapping analyses. Here we used modern lesion analysis techniques to examine the naturally occurring lesion patterns caused by ischemic and by hemorrhagic infarcts in a large, representative acute stroke patient sample. Acute MR and CT imaging of 439 consecutively admitted right-hemispheric stroke patients from a well-defined catchment area suffering from...
Source: NeuroImage: Clinical - November 17, 2015 Category: Radiology Source Type: research

MRI characteristics of carotid bulb atypical fibromuscular dysplasia in black stroke patients
Conclusions aFMD generates a particular MRI pattern in our four patients, which could increase the diagnosis accuracy. Carotid bulb lesion in black stroke patients should suggest aFMD and MRI analysis may contribute to rule out differential diagnoses.
Source: Journal of Neuroradiology - December 11, 2015 Category: Radiology Source Type: research

Maximizing efficiency and diagnostic accuracy triage of acute stroke patients: A case-control study.
CONCLUSION: We present a validated three-question subset of the NIHSS with high specificity for those who would benefit from MT with a high degree of specificity. PMID: 26842606 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - February 6, 2016 Category: Radiology Tags: Interv Neuroradiol Source Type: research

The Revascularization Scales Dilemma: Is It Right to Apply the Treatment in Cerebral Ischemia Scale in Posterior Circulation Stroke? INTERVENTIONAL
CONCLUSIONS: In angiographic assessment of posterior circulation stroke, inter- and intraobserver agreement for the Arterial Occlusive Lesion scale was reliable, while the modified Treatment in Cerebral Ischemia failed to achieve substantial interobserver agreement. The clinical impact of this result needs to be validated in future studies.
Source: American Journal of Neuroradiology - February 11, 2016 Category: Radiology Authors: Jung, C., Yoon, W., Ahn, S. J., Choi, B. S., Kim, J. H., Suh, S. H. Tags: INTERVENTIONAL Source Type: research

Perfusion CT matters more than time to stroke treatment
For ischemic stroke patients who are candidates for revascularization, CT perfusion...Read more on AuntMinnie.comRelated Reading: Mobile stroke units, spectral CT take spots on ECRI watch list DWI-MRI shows which stroke patients need fast therapy Mobile stroke unit with CT improves survival, recovery CT reveals cardioembolic stroke that echo misses Mobile stroke unit with CT scanner speeds care in Cleveland
Source: AuntMinnie.com Headlines - February 17, 2016 Category: Radiology Source Type: news

ARTS (Aspiration-Retriever Technique for Stroke): Initial clinical experience.
CONCLUSIONS: We found that ARTS is a fast, safe and effective method for endovascular recanalization of large vessel occlusions presenting within the context of acute ischemic stroke. PMID: 26908591 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - February 26, 2016 Category: Radiology Tags: Interv Neuroradiol Source Type: research