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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

Association between Early Ischemic Changes and Collaterals in Acute Stroke: A Retrospective Study ADULT BRAIN
CONCLUSIONS: Poor (0–1) leptomeningeal collateral scores were associated with lower ASPECTS, and an increase in time has a multiplicative interaction with the leptomeningeal collateral score on ASPECTS.
Source: American Journal of Neuroradiology - October 5, 2022 Category: Radiology Authors: Laflamme, M., Carrondo-Cottin, S., Valdes, M.- M., Simonyan, D., Audet, M.- E., Gariepy, J.- L., Camden, M.- C., Gariepy, C., Verreault, S., Lavoie, P. Tags: ADULT BRAIN Source Type: research

In Vitro Analysis of the Efficacy of Endovascular Thrombectomy Techniques according to the Vascular Tortuosity Using 3D Printed Models INTERVENTIONAL
CONCLUSIONS: The tortuous vascular anatomy may worsen the first-pass effect and distal emboli rates. The combined techniques failed to show improvement in outcome due to the shearing-off phenomenon of the thrombus during retrieval.
Source: American Journal of Neuroradiology - October 5, 2022 Category: Radiology Authors: Kim, J. H., Kim, B. M., Kim, D. J. Tags: INTERVENTIONAL Source Type: research

3D Enhancement Color Maps in the Characterization of Intracranial Atherosclerotic Plaques ADULT BRAIN
CONCLUSIONS: The new 3D color map method of plaque-enhancement analysis is more accurate for identifying culprit plaques than conventional 2D methods. This new method generates a new set of metrics that could potentially be used to assess disease progression.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Sanchez, S., Raghuram, A., Fakih, R., Wendt, L., Bathla, G., Hickerson, M., Ortega-Gutierrez, S., Leira, E., Samaniego, E. A. Tags: ADULT BRAIN Source Type: research

Detection of Early Ischemic Changes with Virtual Noncontrast Dual-Energy CT in Acute Ischemic Stroke: A Noninferiority Analysis ADULT BRAIN
CONCLUSIONS: Dual-energy virtual NCCT is noninferior compared with conventional NCCT for the detection of early ischemic changes with ASPECTS.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Kauw, F., Ding, V. Y., Dankbaar, J. W., van Ommen, F., Zhu, G., Boothroyd, D. B., Wolman, D. N., Molvin, L., de Jong, H. W. A. M., Kappelle, L. J., Velthuis, B. K., Heit, J. J., Wintermark, M. Tags: ADULT BRAIN Source Type: research

Optimizing the Definition of Ischemic Core in CT Perfusion: Influence of Infarct Growth and Tissue-Specific Thresholds ADULT BRAIN
CONCLUSIONS: GM- and WM-specific thresholds result in different estimations of ischemic core in CTP and increase the global accuracy. More restrictive thresholds better estimate the actual extent of the infarcted tissue.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Rodriguez-Vazquez, A., Laredo, C., Renu, A., Rudilosso, S., Llull, L., Amaro, S., Obach, V., Vera, V., Paez, A., Oleaga, L., Urra, X., Chamorro, A. Tags: ADULT BRAIN Source Type: research

Predictors and Impact of Sulcal SAH after Mechanical Thrombectomy in Patients with Isolated M2 Occlusion INTERVENTIONAL
CONCLUSIONS: After mechanical thrombectomy for M2 occlusion, sulcal SAH was not uncommon and occurred more frequently with distal M2 occlusion, superior division, acute M2 angulation, and multiple thrombectomy passes (≥3). The impact of covert sulcal SAH was mostly benign and was not associated with an unfavorable outcome.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Kim, D. Y., Baik, S. H., Jung, C., Kim, J. Y., Han, S.- G., Kim, B. J., Kang, J., Bae, H.- J., Kim, J. H. Tags: INTERVENTIONAL Source Type: research

Causes of Death in Endovascularly Treated Patients with Acute Stroke INTERVENTIONAL
CONCLUSIONS: Cerebrovascular causes in patients with stroke play a major role in the intrahospital causes of death and reasons for palliation. Considering the large proportion of secondarily palliative–treated patients, reasons for palliation should be considered instead of causes of death to avoid concealment by, for example, life-terminating measures.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Nagel, H., Pinho, J., Hasan, D., Ridwan, H., Habib, P., Schulz, J. B., Wiesmann, M., Reich, A., Nikoubashman, O. Tags: INTERVENTIONAL Source Type: research

Endarterectomy, Stenting, or Medical Treatment for Symptomatic Carotid Near-Occlusion: Results from CAOS, a Multicenter Registry Study EXTRACRANIAL VASCULAR
CONCLUSIONS: Carotid artery stent placement and carotid endarterectomy are associated with high rates of failure and periprocedural stroke. Carotid near-occlusion with full collapse appears to be associated with an increased risk of technical failure and restenosis. Carotid near-occlusion revascularization does not seem to reduce the risk of stroke at follow-up compared with medical treatment.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Garcia-Pastor, A., Gil-Nunez, A., Ramirez-Moreno, J. M., Gonzalez-Nafria, N., Tejada, J., Moniche, F., Portilla-Cuenca, J. C., Martinez-Sanchez, P., Fuentes, B., Gamero-Garcia, M. A., de Lecinana, M. A., Masjuan, J., Verge, D. C., Aladro, Y., Parkhutik, V Tags: EXTRACRANIAL VASCULAR Source Type: research

Comparison of 30-Day Outcomes after Carotid Artery Stenting in Patients with Near-Occlusion and Severe Stenosis: A Propensity Score Matching Analysis EXTRACRANIAL VASCULAR
CONCLUSIONS: Carotid stent placement in patients with ICA near-occlusion was not associated with an increased 30-day risk of stroke or death compared with severe stenosis. Survival up to 10 years after carotid artery stenting was similar in both groups.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Stechovsky, C., Hulikova Tesarkova, K., Hajek, P., Horvath, M., Hansvenclova, E., Veselka, J. Tags: EXTRACRANIAL VASCULAR Source Type: research

Effect of Normal Breathing on the Movement of CSF in the Spinal Subarachnoid Space SPINE
CONCLUSIONS: Respiratory-gated measurements of the CSF motion in the spinal canal showed cyclic oscillatory movements of spinal fluid correlated to the breathing pattern.
Source: American Journal of Neuroradiology - September 7, 2022 Category: Radiology Authors: Gutierrez-Montes, C., Coenen, W., Vidorreta, M., Sincomb, S., Martinez-Bazan, C., Sanchez, A. L., Haughton, V. Tags: SPINE Source Type: research

Unsupervised Deep Learning for Stroke Lesion Segmentation on Follow-up CT Based on Generative Adversarial Networks FUNCTIONAL
CONCLUSIONS: An unsupervised generative adversarial network can be used to obtain automated infarct lesion segmentations with a moderate Dice similarity coefficient and good volumetric correspondence.
Source: American Journal of Neuroradiology - August 8, 2022 Category: Radiology Authors: van Voorst, H., Konduri, P. R., van Poppel, L. M., van der Steen, W., van der Sluijs, P. M., Slot, E. M. H., Emmer, B. J., van Zwam, W. H., Roos, Y. B. W. E. M., Majoie, C. B. L. M., Zaharchuk, G., Caan, M. W. A., Marquering, H. A., on behalf of the CONTR Tags: FUNCTIONAL Source Type: research

Neuroimaging Findings in CHANTER Syndrome: A Case Series ADULT BRAIN
SUMMARY: Recently, a distinct clinicoradiologic entity involving cerebellar, hippocampal, and basal nuclei transient edema with restricted diffusion (CHANTER) on MR imaging was identified. Patients present in an unresponsive state following exposure to drugs of abuse. Very little information exists regarding this entity, particularly in the radiology literature. We identify and describe 3 patients at our institution with similar clinical and radiographic findings. Multifocal restricted diffusion in the brain is typically associated with poor outcomes. By contrast, CHANTER involves intraventricular obstructive hydrocephalus...
Source: American Journal of Neuroradiology - August 8, 2022 Category: Radiology Authors: Mallikarjun, K. S., Parsons, M. S., Nigogosyan, Z., Goyal, M. S., Eldaya, R. W. Tags: ADULT BRAIN Source Type: research

Navigating Supply Chain Disruptions of Iodinated Contrast Agent for Neuroimaging and How Business Intelligence Can Help the Decision Process ADULT BRAIN
SUMMARY: A recent coronavirus disease 2019–related shutdown of the main production facility of iohexol in China has led to massive shortages of iodinated contrast material across the globe. This shortage has also jeopardized neuroimaging. In this article, we describe remedies to reduce iodinated contrast material use for stroke imaging, which is its primary use in neuroimaging, that we have implemented in our hospital network.
Source: American Journal of Neuroradiology - July 7, 2022 Category: Radiology Authors: Bammer, R., Amukotuwa, S. A. Tags: ADULT BRAIN Source Type: research

Survey of the American Society of Neuroradiology Membership on the Use and Value of Intracranial Vessel Wall MRI ADULT BRAIN
CONCLUSIONS: More than 50% of neuroradiology groups use vessel wall MR imaging for intracranial vasculopathy characterization and differentiation, emphasizing the need for additional technical and educational support, especially as clinical vessel wall MR imaging implementation continues to grow.
Source: American Journal of Neuroradiology - July 7, 2022 Category: Radiology Authors: Mossa-Basha, M., Zhu, C., Yuan, C., Saba, L., Saloner, D. A., Edjlali, M., Stence, N. V., Mandell, D. M., Romero, J. M., Qiao, Y., Mikulis, D. J., Wasserman, B. A. Tags: ADULT BRAIN Source Type: research

RAPID CT Perfusion-Based Relative CBF Identifies Good Collateral Status Better Than Hypoperfusion Intensity Ratio, CBV-Index, and Time-to-Maximum in Anterior Circulation Stroke FUNCTIONAL
CONCLUSIONS: Automated CT perfusion analysis allows accurate identification of collateral status in acute ischemic stroke. A relative CBF < 38% may be a better perfusion-based indicator of good collateral supply compared with time-to-maximum, the hypoperfusion intensity ratio, and the CBV-index.
Source: American Journal of Neuroradiology - July 7, 2022 Category: Radiology Authors: Potreck, A., Scheidecker, E., Weyland, C. S., Neuberger, U., Herweh, C., Möhlenbruch, M. A., Chen, M., Nagel, S., Bendszus, M., Seker, F. Tags: FUNCTIONAL Source Type: research