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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

Infarct Volume Predicts Hospitalization Costs in Anterior Circulation Large-Vessel Occlusion Stroke ADULT BRAIN
CONCLUSIONS: Final infarct volume was the strongest predictor of increased hospitalization costs in anterior circulation large-vessel occlusion stroke. Acute stroke therapies that reduce final infarct volume may not only improve clinical outcomes but may also prove cost-effective.
Source: American Journal of Neuroradiology - January 11, 2019 Category: Radiology Authors: Streib, C. D., Rangaraju, S., Campbell, D. T., Winger, D. G., Paolini, S. L., Zhang, A. J., Jankowitz, B. T., Jadhav, A. P., Jovin, T. G. Tags: ADULT BRAIN Source Type: research

Focal Hypoperfusion in Acute Ischemic Stroke Perfusion CT: Clinical and Radiologic Predictors and Accuracy for Infarct Prediction ADULT BRAIN
CONCLUSIONS: Compared with NCCT, perfusion CT doubles the sensitivity in detecting acute ischemic stroke. Focal hypoperfusion is independently predicted by stroke severity, cortical clinical deficits, nonlacunar supratentorial strokes, and shorter onset-to-imaging delays. A high proportion of patients with focal hypoperfusion developed infarction on subsequent imaging, as did some patients without focal hypoperfusion, indicating the complementarity of perfusion CT and MR imaging in acute ischemic stroke.
Source: American Journal of Neuroradiology - March 13, 2019 Category: Radiology Authors: Bill, O., Inacio, N. M., Lambrou, D., Wintermark, M., Ntaios, G., Dunet, V., Michel, P. Tags: ADULT BRAIN Source Type: research

Is Histologic Thrombus Composition in Acute Stroke Linked to Stroke Etiology or to Interventional Parameters? INTERVENTIONAL
CONCLUSIONS: We interpreted the higher macrophage and platelet content in cardioembolic thrombi compared with large-artery atherosclerotic stenosis or embolic stroke of undetermined source thrombi as an indication that the latter type might be derived from an atherosclerotic plaque rather than from an undetermined cardiac source. The extent of thrombus fragmentation was associated with a more challenging mechanical thrombectomy and a higher lymphocyte content of the thrombi. Thus, thrombus fragmentation not only might be caused by the recanalization procedure but also might be a feature of a lymphocyte-rich, difficult-to-r...
Source: American Journal of Neuroradiology - April 8, 2020 Category: Radiology Authors: Goebel, J., Gaida, B.- J., Wanke, I., Kleinschnitz, C., Koehrmann, M., Forsting, M., Moenninghoff, C., Radbruch, A., Junker, A. Tags: INTERVENTIONAL Source Type: research

Location-Specific ASPECTS Paradigm in Acute Ischemic Stroke: A Systematic Review and Meta-Analysis ADULT BRAIN
CONCLUSIONS: Our study indicated an unequal impact of some ASPECTS subregions in predicting outcomes of patients with acute ischemic stroke. Stroke laterality, imaging technique, and interventional technique subgroup analyses showed no differences among ASPECTS regions in predicting outcome. Investigation in larger cohorts is required to assess the association of ASPECTS with acute ischemic stroke outcome.
Source: American Journal of Neuroradiology - November 11, 2020 Category: Radiology Authors: Seyedsaadat, S. M., Neuhaus, A. A., Pederson, J. M., Brinjikji, W., Rabinstein, A. A., Kallmes, D. F. Tags: ADULT BRAIN Source Type: research

Evaluation of Artificial Intelligence-Powered Identification of Large-Vessel Occlusions in a Comprehensive Stroke Center FUNCTIONAL
CONCLUSIONS: Our experience evaluating Viz LVO shows that the system has the potential for early identification of patients with stroke with large-vessel occlusions, hopefully improving future management and stroke care.
Source: American Journal of Neuroradiology - February 9, 2021 Category: Radiology Authors: Yahav-Dovrat, A., Saban, M., Merhav, G., Lankri, I., Abergel, E., Eran, A., Tanne, D., Nogueira, R. G., Sivan-Hoffmann, R. Tags: FUNCTIONAL Source Type: research

Analysis of Stroke Detection during the COVID-19 Pandemic Using Natural Language Processing of Radiology Reports ADULT BRAIN
CONCLUSIONS: Acute or subacute ischemic stroke cases detected by neuroimaging decreased during the COVID-19 pandemic, though a higher proportion of studies ordered for stroke were positive for acute or subacute ischemic strokes. Natural language processing approaches can help automatically track acute or subacute ischemic stroke numbers for epidemiologic studies, though local classifier training is important due to radiologist reporting style differences.
Source: American Journal of Neuroradiology - March 15, 2021 Category: Radiology Authors: Li, M. D., Lang, M., Deng, F., Chang, K., Buch, K., Rincon, S., Mehan, W. A., Leslie-Mazwi, T. M., Kalpathy-Cramer, J. Tags: ADULT BRAIN Source Type: research

Association of Left Vertebral Artery Hypoplasia with Posterior Circulation Stroke and the Functional Outcome of Patients with Atrial Fibrillation-Related Cardioembolic Stroke EXTRACRANIAL VASCULAR
CONCLUSIONS: Patients with cardioembolic stroke and left vertebral artery hypoplasia had posterior circulation stroke, basilar artery occlusion, and poor functional outcomes after 3 months.
Source: American Journal of Neuroradiology - January 11, 2023 Category: Radiology Authors: Bae, J.- H., Ryu, J.- C., Ha, S. H., Kim, B. J., Kang, D.- W., Kwon, S. U., Kim, J.- S., Chang, J. Y. Tags: EXTRACRANIAL VASCULAR Source Type: research

Microcatheter to Recanalization (Procedure Time) Predicts Outcomes in Endovascular Treatment in Patients with Acute Ischemic Stroke: When Do We Stop? INTERVENTIONAL
CONCLUSIONS: Procedure time in patients with acute ischemic stroke appears to be a critical determinant of outcomes following endovascular treatment. This highlights the need for procedure time guidelines for patients being considered for endovascular treatment in acute ischemic stroke.
Source: American Journal of Neuroradiology - February 13, 2013 Category: Radiology Authors: Hassan, A. E., Chaudhry, S. A., Miley, J. T., Khatri, R., Hassan, S. A., Suri, M. F. K., Qureshi, A. I. Tags: INTERVENTIONAL Source Type: research

Imaging Recommendations for Acute Stroke and Transient Ischemic Attack Patients: A Joint Statement by the American Society of Neuroradiology, the American College of Radiology, and the Society of NeuroInterventional Surgery WHITE PAPER
SUMMARY: Stroke is a leading cause of death and disability worldwide. Imaging plays a critical role in evaluating patients suspected of acute stroke and transient ischemic attack, especially before initiating treatment. Over the past few decades, major advances have occurred in stroke imaging and treatment, including Food and Drug Administration approval of recanalization therapies for the treatment of acute ischemic stroke. A wide variety of imaging techniques has become available to assess vascular lesions and brain tissue status in acute stroke patients. However, the practical challenge for physicians is to understand t...
Source: American Journal of Neuroradiology - November 15, 2013 Category: Radiology Authors: Wintermark, M., Sanelli, P. C., Albers, G. W., Bello, J., Derdeyn, C., Hetts, S. W., Johnson, M. H., Kidwell, C., Lev, M. H., Liebeskind, D. S., Rowley, H., Schaefer, P. W., Sunshine, J. L., Zaharchuk, G., Meltzer, C. C. Tags: WHITE PAPER Source Type: research

Combined Low-Dose Contrast-Enhanced MR Angiography and Perfusion for Acute Ischemic Stroke at 3T: A More Efficient Stroke Protocol EVIDENCE-BASED MEDICINE LEVEL 2
CONCLUSIONS: In patients with acute stroke, combined low-dose contrast-enhanced MRA and dynamic susceptibility contrast perfusion at 3T is feasible and results in significant scan time and contrast dose reductions.
Source: American Journal of Neuroradiology - June 11, 2014 Category: Radiology Authors: Nael, K., Meshksar, A., Ellingson, B., Pirastehfar, M., Salamon, N., Finn, P., Liebeskind, D. S., Villablanca, J. P. Tags: EVIDENCE-BASED MEDICINE LEVEL 2 Source Type: research

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

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

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

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