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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

Quantitative Collateral Assessment on CTP in the Prediction of Stroke Etiology FUNCTIONAL
CONCLUSIONS: Patients with large-artery atherosclerosis had a more adequate collateral perfusion supply with the new quantitative collateral assessment. The new quantitative collateral measurement might contribute to the prediction of stroke etiology in the acute clinical scenario for patients with acute ischemic stroke.
Source: American Journal of Neuroradiology - July 7, 2022 Category: Radiology Authors: Shi, F., Zeng, Q., Gong, X., Zhong, W., Chen, Z., Yan, S., Lou, M. Tags: FUNCTIONAL Source Type: research

Perfusion Scotoma: A Potential Core Underestimation in CT Perfusion in the Delayed Time Window in Patients with Acute Ischemic Stroke ADULT BRAIN
SUMMARY: With the growing rise in utilization of CT perfusion for selecting patients for thrombectomy in acute ischemic stroke from large vessel occlusion, some potential pitfalls are becoming more commonly seen particularly when it comes to estimating the core infarct size on CT perfusion. Ghost infarct core has been described to account for overestimating core infarct size in the early time period (<3 hours). Herein, we describe the phenomenon of underestimating core infarct size on CT perfusion in the later time period (>6 hours), which we have termed perfusion scotoma.
Source: American Journal of Neuroradiology - June 7, 2022 Category: Radiology Authors: Abrams, K., Dabus, G. Tags: ADULT BRAIN Source Type: research

Microinfarcts in the Deep Gray Matter on 7T MRI: Risk Factors, MRI Correlates, and Relation to Cognitive Functioning--The SMART-MR Study ADULT BRAIN
CONCLUSIONS: Microinfarcts in the deep gray matter on 7T MR imaging were associated with worse cognitive functioning and risk factors and MR imaging markers of small-vessel and large-vessel disease. Our findings suggest that microinfarcts in the deep gray matter may represent a novel imaging marker of vascular brain injury.
Source: American Journal of Neuroradiology - June 7, 2022 Category: Radiology Authors: Ghaznawi, R., Zwartbol, M. H. T., de Bresser, J., Kuijf, H. J., Vincken, K. L., Rissanen, I., Geerlings, M. I., Hendrikse, J., on behalf of the UCC-SMART-Study Group Tags: ADULT BRAIN Source Type: research

ADC Level is Related to DWI Reversal in Patients Undergoing Mechanical Thrombectomy: A Retrospective Cohort Study INTERVENTIONAL
CONCLUSIONS: In acute ischemic stroke, the ADC value is independently associated with DWI reversal. Lesions with a mean ADC of ≥520 x 10–6 mm2/s are salvageable by mechanical thrombectomy, and DWI reversal areas regain neurologic function. The ADC value is easily assessed and is a useful tool to predict viable lesions.
Source: American Journal of Neuroradiology - June 7, 2022 Category: Radiology Authors: Umemura, T., Hatano, T., Ogura, T., Miyata, T., Agawa, Y., Nakajima, H., Tomoyose, R., Sakamoto, H., Tsujimoto, Y., Nakazawa, Y., Wakabayashi, T., Hashimoto, T., Fujiki, R., Shiraishi, W., Nagata, I. Tags: INTERVENTIONAL Source Type: research

Clinical Significance of Prehospital Telecommunication Defined as the Critical Stroke Call Pathway in Acute Ischemic Stroke Requiring Intra-Arterial Recanalization Therapy INTERVENTIONAL
CONCLUSIONS: In our study, compared with the routine stroke pathway, the critical stroke call pathway remarkably reduced the door-to-puncture time for arterial recanalization therapy, with better clinical outcomes, especially in patients with a relatively good clinical status.
Source: American Journal of Neuroradiology - June 7, 2022 Category: Radiology Authors: Lee, H., Kim, S. H., Baek, J. W., Jin, S.- C. Tags: INTERVENTIONAL Source Type: research

Stroke Recurrence in Children with Vertebral Artery Dissecting Aneurysm PEDIATRICS
CONCLUSIONS: Vertebral artery dissecting aneurysm is often missed on the initial diagnostic evaluation of children presenting with stroke. In children with vertebral artery dissection, the presence of an aneurysm is associated with stroke presentation at a younger age and stroke recurrence.
Source: American Journal of Neuroradiology - June 7, 2022 Category: Radiology Authors: Ritchey, Z., Bernard, T. J., Fenton, L. Z., Maloney, J. A., Mirsky, D. M., Neuberger, I., Sriram, I., Seinfeld, J., Stence, N. V. Tags: PEDIATRICS Source Type: research

Small Vessel Disease, a Marker of Brain Health: What the Radiologist Needs to Know ADULT BRAIN
SUMMARY: Small vessel disease, a disorder of cerebral microvessels, is an expanding epidemic and a common cause of stroke and dementia. Despite being almost ubiquitous in brain imaging, the clinicoradiologic association of small vessel disease is weak, and the underlying pathogenesis is poorly understood. The STandards for ReportIng Vascular changes on nEuroimaging (STRIVE) criteria have standardized the nomenclature. These include white matter hyperintensities of presumed vascular origin, recent small subcortical infarcts, lacunes of presumed vascular origin, prominent perivascular spaces, cerebral microbleeds, superficia...
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: Mahammedi, A., Wang, L. L., Williamson, B. J., Khatri, P., Kissela, B., Sawyer, R. P., Shatz, R., Khandwala, V., Vagal, A. Tags: ADULT BRAIN Source Type: research

Beyond Diffusion Tensor MRI Methods for Improved Characterization of the Brain after Ischemic Stroke: A Review ADULT BRAIN
SUMMARY: Ischemic stroke is a worldwide problem, with 15 million people experiencing a stroke annually. MR imaging is a valuable tool for understanding and assessing brain changes after stroke and predicting recovery. Of particular interest is the use of diffusion MR imaging in the nonacute stage 1–30 days poststroke. Thousands of articles have been published on the use of diffusion MR imaging in stroke, including several recent articles reviewing the use of DTI for stroke. The goal of this work was to survey and put into context the recent use of diffusion MR imaging methods beyond DTI, including diffusional kurtosi...
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: DiBella, E. V. R., Sharma, A., Richards, L., Prabhakaran, V., Majersik, J. J., HashemizadehKolowri, S. K. Tags: ADULT BRAIN Source Type: research

Interobserver Reliability on Intravoxel Incoherent Motion Imaging in Patients with Acute Ischemic Stroke FUNCTIONAL
CONCLUSIONS: Intravoxel incoherent motion MR imaging could be performed in < 1 minute in addition to routine DWI. Intravoxel incoherent motion parameters noninvasively provide feasible, qualitative perfusion-related information for assessing patients with acute ischemic stroke.
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: Yamashita, K., Kamei, R., Sugimori, H., Kuwashiro, T., Tokunaga, S., Kawamata, K., Furuya, K., Harada, S., Maehara, J., Okada, Y., Noguchi, T. Tags: FUNCTIONAL Source Type: research

Antithrombotic Treatment after Carotid Stenting in Patients with Concomitant Atrial Fibrillation INTERVENTIONAL
CONCLUSIONS: Among patients with carotid artery stent placement with atrial fibrillation, triple therapy confers a high bleeding risk. A regimen of direct oral anticoagulants plus a P2Y12 inhibitor might confer a good safety profile with significantly lower rates of bleeding and optimal efficacy.
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: Pardo-Galiana, B., Medina-Rodriguez, M., Millan-Vazquez, M., Cabezas-Rodriguez, J. A., Lebrato-Hernandez, L., Ainz-Gomez, L., Zapata-Arriaza, E., Ortega, J., de Alboniga-Chindurza, A., Montaner, J., Gonzalez, A., Moniche, F. Tags: INTERVENTIONAL Source Type: research

An In-Depth Analysis of Brain and Spine Neuroimaging in Children with Abusive Head Trauma: Beyond the Classic Imaging Findings PEDIATRICS
CONCLUSIONS: Our results may suggest that a combination of intraventricular hemorrhage, diffuse axonal injury, hypoxic-ischemic injury, arterial stroke, and/or spinal ligamentous injury on neuroimaging at presentation may be used as potential poor prognostic indicators in children with abusive head trauma.
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: Orman, G., Kralik, S. F., Desai, N. K., Singer, T. G., Kwabena, S., Risen, S., Huisman, T. A. G. M. Tags: PEDIATRICS Source Type: research

Pulsatility Index in the Basal Ganglia Arteries Increases with Age in Elderly with and without Cerebral Small Vessel Disease ADULT BRAIN
CONCLUSIONS: Our results suggest that age might be the driving factor for altered cerebral small vessel hemodynamics. Furthermore, this study puts cerebral small vessel disease downstream pathologies in the basal ganglia region in relation to blood flow characteristics of the basal ganglia microvasculature.
Source: American Journal of Neuroradiology - April 8, 2022 Category: Radiology Authors: Perosa, V., Arts, T., Assmann, A., Mattern, H., Speck, O., Oltmer, J., Heinze, H.- J., Düzel, E., Schreiber, S., Zwanenburg, J. J. M. Tags: ADULT BRAIN Source Type: research

A Meta-analysis of Combined Aspiration Catheter and Stent Retriever versus Stent Retriever Alone for Large-Vessel Occlusion Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: On meta-analysis, aspiration catheter and stent retriever are associated with a superior first pass effect compared with stent retriever alone, but they are not associated with statistically different final reperfusion or functional independence.
Source: American Journal of Neuroradiology - April 8, 2022 Category: Radiology Authors: Schartz, D. A., Ellens, N. R., Kohli, G. S., Akkipeddi, S. M. K., Colby, G. P., Bhalla, T., Mattingly, T. K., Bender, M. T. Tags: INTERVENTIONAL Source Type: research

Dilator-Dotter Technique for Acute Ischemic Stroke: Further Applications in the Vertebral Arteries LETTERS
Source: American Journal of Neuroradiology - March 10, 2022 Category: Radiology Authors: Cox, M., Layton, K., Hise, J. Tags: LETTERS Source Type: research

Hemorrhagic Transformation Rates following Contrast Media Administration in Patients Hospitalized with Ischemic Stroke ADULT BRAIN
CONCLUSIONS: Iso-osmolar contrast media was associated with a lower rate of hemorrhagic transformation compared with low-osmolar contrast media in patients with ischemic stroke.
Source: American Journal of Neuroradiology - March 10, 2022 Category: Radiology Authors: Moser, F. G., Todoran, T. M., Ryan, M., Baker, E., Gunnarsson, C., Kellum, J. A. Tags: ADULT BRAIN Source Type: research