Index by author
Naggara, O.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessTwo-Layered Susceptibility Vessel Sign and High Overestimation Ratio on MRI Are Predictive of Cardioembolic StrokeR. Bourcier, I. Derraz, S. Bracard, C. Oppenheim and O. Naggara on behalf of the THRACE InvestigatorsAmerican Journal of Neuroradiology January 2019, 40 (1) 65-67; DOI: https://doi.org/10.3174/ajnr.A5865
Two characteristics of the susceptibility vessel sign, overestimation ratio (overR), a quantitative evaluation of the susceptibility vessel sign, and the 2-layered susceptibility vessel sign (TL-SVS), were reported to predict cardioembolic stroke. These 2 biomarkers, on 1.5T or 3T systems (159 and 101 patients, respectively), demonstrated high specificity (0.77 at 1.5T and 1 at 3T) and their simultaneous presence is highly associated with cardioembolism.
Nair, J.
- FELLOWS' JOURNAL CLUBAdult BrainOpen AccessRadiomics-Based Intracranial Thrombus Features on CT and CTA Predict Recanalization with Intravenous Alteplase in Patients with Acute Ischemic StrokeW. Qiu, H. Kuang, J. Nair, Z. Assis, M. Najm, C. McDougall, B. McDougall, K. Chung, A.T. Wilson, M. Goyal, M.D. Hill, A.M. Demchuk and B.K. MenonAmerican Journal of Neuroradiology January 2019, 40 (1) 39-44; DOI: https://doi.org/10.3174/ajnr.A5918
Sixty-seven patients with ICA/M1 MCA segment thrombus treated with IV alteplase were included in this analysis. Three hundred twenty-six radiomics features were extracted from each thrombus on both NCCT and CTA images. Linear discriminative analysis was applied to select features most strongly associated with early recanalization with IV alteplase. These features were then used to train a linear support vector machine classifier. Thrombus radiomics features derived from NCCT and CTA are more predictive of recanalization with IV alteplase in patients with acute ischemic stroke with proximal occlusion than previously known thrombus imaging features such as length, volume, and permeability.
Najm, M.
- Adult BrainOpen AccessAutomated ASPECTS on Noncontrast CT Scans in Patients with Acute Ischemic Stroke Using Machine LearningH. Kuang, M. Najm, D. Chakraborty, N. Maraj, S.I. Sohn, M. Goyal, M.D. Hill, A.M. Demchuk, B.K. Menon and W. QiuAmerican Journal of Neuroradiology January 2019, 40 (1) 33-38; DOI: https://doi.org/10.3174/ajnr.A5889
- FELLOWS' JOURNAL CLUBAdult BrainOpen AccessRadiomics-Based Intracranial Thrombus Features on CT and CTA Predict Recanalization with Intravenous Alteplase in Patients with Acute Ischemic StrokeW. Qiu, H. Kuang, J. Nair, Z. Assis, M. Najm, C. McDougall, B. McDougall, K. Chung, A.T. Wilson, M. Goyal, M.D. Hill, A.M. Demchuk and B.K. MenonAmerican Journal of Neuroradiology January 2019, 40 (1) 39-44; DOI: https://doi.org/10.3174/ajnr.A5918
Sixty-seven patients with ICA/M1 MCA segment thrombus treated with IV alteplase were included in this analysis. Three hundred twenty-six radiomics features were extracted from each thrombus on both NCCT and CTA images. Linear discriminative analysis was applied to select features most strongly associated with early recanalization with IV alteplase. These features were then used to train a linear support vector machine classifier. Thrombus radiomics features derived from NCCT and CTA are more predictive of recanalization with IV alteplase in patients with acute ischemic stroke with proximal occlusion than previously known thrombus imaging features such as length, volume, and permeability.
Nappini, S.
- InterventionalYou have accessY-Stent-Assisted Coiling of Wide-Neck Bifurcation Intracranial Aneurysms: A Meta-AnalysisF. Cagnazzo, N. Limbucci, S. Nappini, L. Renieri, A. Rosi, A. Laiso, D. Tiziano di Carlo, P. Perrini and S. MangiaficoAmerican Journal of Neuroradiology January 2019, 40 (1) 122-128; DOI: https://doi.org/10.3174/ajnr.A5900
Ngandu, T.
- Adult BrainOpen AccessBrain β-Amyloid and Atrophy in Individuals at Increased Risk of Cognitive DeclineI.K. Martikainen, N. Kemppainen, J. Johansson, J. Teuho, S. Helin, Y. Liu, S. Helisalmi, H. Soininen, R. Parkkola, T. Ngandu, M. Kivipelto and J.O. RinneAmerican Journal of Neuroradiology January 2019, 40 (1) 80-85; DOI: https://doi.org/10.3174/ajnr.A5891
Nicolai, J.
- PediatricsYou have access“Ears of the Lynx” MRI Sign Is Associated with SPG11 and SPG15 Hereditary Spastic ParaplegiaB. Pascual, S.T. de Bot, M.R. Daniels, M.C. França, C. Toro, M. Riverol, P. Hedera, M.T. Bassi, N. Bresolin, B.P. van de Warrenburg, B. Kremer, J. Nicolai, P. Charles, J. Xu, S. Singh, N.J. Patronas, S.H. Fung, M.D. Gregory and J.C. MasdeuAmerican Journal of Neuroradiology January 2019, 40 (1) 199-203; DOI: https://doi.org/10.3174/ajnr.A5935
Obayashi, J.T.
- Adult BrainYou have accessDefining the Normal Dorsal Contour of the Corpus Callosum with TimeK.L. Krause, D. Howard, D.R. Pettersson, S. Elstrott, D. Ross, J.T. Obayashi, R. Barajas, A. Bonde and J.M. PollockAmerican Journal of Neuroradiology January 2019, 40 (1) 86-91; DOI: https://doi.org/10.3174/ajnr.A5886
Oppenheim, C.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessTwo-Layered Susceptibility Vessel Sign and High Overestimation Ratio on MRI Are Predictive of Cardioembolic StrokeR. Bourcier, I. Derraz, S. Bracard, C. Oppenheim and O. Naggara on behalf of the THRACE InvestigatorsAmerican Journal of Neuroradiology January 2019, 40 (1) 65-67; DOI: https://doi.org/10.3174/ajnr.A5865
Two characteristics of the susceptibility vessel sign, overestimation ratio (overR), a quantitative evaluation of the susceptibility vessel sign, and the 2-layered susceptibility vessel sign (TL-SVS), were reported to predict cardioembolic stroke. These 2 biomarkers, on 1.5T or 3T systems (159 and 101 patients, respectively), demonstrated high specificity (0.77 at 1.5T and 1 at 3T) and their simultaneous presence is highly associated with cardioembolism.
Ou, X.
- PediatricsOpen AccessCesarean Delivery Impacts Infant Brain DevelopmentS.C. Deoni, S.H. Adams, X. Li, T.M. Badger, R.T. Pivik, C.M. Glasier, R.H. Ramakrishnaiah, A.C. Rowell and X. OuAmerican Journal of Neuroradiology January 2019, 40 (1) 169-177; DOI: https://doi.org/10.3174/ajnr.A5887
Palma, G.
- EDITOR'S CHOICEAdult BrainOpen AccessDeterminants of Deep Gray Matter Atrophy in Multiple Sclerosis: A Multimodal MRI StudyG. Pontillo, S. Cocozza, R. Lanzillo, C. Russo, M.D. Stasi, C. Paolella, E.A. Vola, C. Criscuolo, P. Borrelli, G. Palma, E. Tedeschi, V.B. Morra, A. Elefante and A. BrunettiAmerican Journal of Neuroradiology January 2019, 40 (1) 99-106; DOI: https://doi.org/10.3174/ajnr.A5915
Seventy-seven patients with MS and 44 healthy controls were enrolled in this cross-sectional study. MR imaging investigation included volumetric, diffusion tensor imaging, perfusion weighted imaging, and Quantitative Susceptibility Mapping analyses. Deep gray matter structures were automatically segmented to obtain volumes and mean values for each MR imaging metric in the thalamus, caudate, putamen, and globus pallidus. Patients with MS showed a multifaceted involvement of the thalamus and basal ganglia, with significant atrophy of all deep gray matter structures. In the relapsing-remitting MS group, WM lesion burden proved to be the main contributor to volume loss for all deep gray matter structures.
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