Index by author
Mcdougall, B.
- 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.
Mcdougall, C.
- 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.
Mcketton, L.
- EDITOR'S CHOICEAdult BrainYou have accessImproved White Matter Cerebrovascular Reactivity after Revascularization in Patients with Steno-Occlusive DiseaseL. McKetton, L. Venkatraghavan, C. Rosen, D.M. Mandell, K. Sam, O. Sobczyk, J. Poublanc, E. Gray, A. Crawley, J. Duffin, J.A. Fisher and D.J. MikulisAmerican Journal of Neuroradiology January 2019, 40 (1) 45-50; DOI: https://doi.org/10.3174/ajnr.A5912
Thirty-five patients with steno-occlusive disease (Moyamoya disease [n = 24], Moyamoya syndrome [n = 3], atherosclerosis [n = 6], vasculitis [n = 1], and idiopathic stenosis [n = 1]) who underwent unilateral brain revascularization using a direct superficial temporal artery–to-MCA bypass were evaluated. WM cerebrovascular reactivity was measured preoperatively and postoperatively using BOLD MR imaging during iso-oxic hypercapnic changes in end-tidal carbon dioxide. WM cerebrovascular reactivity significantly improved after direct unilateral superficial temporal artery–to-MCA bypass in the revascularized hemisphere in the MCA territory and in the anterior cerebral artery territory.
Meltzer, C.C.
- EditorialYou have accessWomen Rising to the Top: The Tipping Point for the ASNRC.C. Meltzer, P.C. Sanelli, M.B. Hepp and J.A. BelloAmerican Journal of Neuroradiology January 2019, 40 (1) 2-4; DOI: https://doi.org/10.3174/ajnr.A5893
Menon, B.K.
- 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.
Mikulis, D.J.
- EDITOR'S CHOICEAdult BrainYou have accessImproved White Matter Cerebrovascular Reactivity after Revascularization in Patients with Steno-Occlusive DiseaseL. McKetton, L. Venkatraghavan, C. Rosen, D.M. Mandell, K. Sam, O. Sobczyk, J. Poublanc, E. Gray, A. Crawley, J. Duffin, J.A. Fisher and D.J. MikulisAmerican Journal of Neuroradiology January 2019, 40 (1) 45-50; DOI: https://doi.org/10.3174/ajnr.A5912
Thirty-five patients with steno-occlusive disease (Moyamoya disease [n = 24], Moyamoya syndrome [n = 3], atherosclerosis [n = 6], vasculitis [n = 1], and idiopathic stenosis [n = 1]) who underwent unilateral brain revascularization using a direct superficial temporal artery–to-MCA bypass were evaluated. WM cerebrovascular reactivity was measured preoperatively and postoperatively using BOLD MR imaging during iso-oxic hypercapnic changes in end-tidal carbon dioxide. WM cerebrovascular reactivity significantly improved after direct unilateral superficial temporal artery–to-MCA bypass in the revascularized hemisphere in the MCA territory and in the anterior cerebral artery territory.
Mirza, M.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessMRI Quantitative T2* Mapping to Predict Dominant Composition of In Vitro ThrombusR. Bourcier, R. Pautre, M. Mirza, C. Castets, J. Darcourt, J. Labreuche, L. Detraz, H. Desal, J.-M. Serfaty and C. ToquetAmerican Journal of Neuroradiology January 2019, 40 (1) 59-64; DOI: https://doi.org/10.3174/ajnr.A5938
Thirty-five thrombus analogs of different compositions were scanned with an MR imaging quantitative T2* mapping sequence. Two radiologists, blinded to thrombus composition, measured the thrombus-T2* relaxation time twice, at an interval of 2 weeks. Quantitative histologic evaluations of red blood cell content were performed. Inter- and intraobserver reproducibility of the thrombus-T2* relaxation time was assessed by calculating intraclass correlation coefficients. MR imaging quantitative T2* mapping can reliably identify the thrombus red blood cell content in vitro. This fast, easy-to-use sequence could be implemented in routine practice.
Moon, J.I.
- Adult BrainYou have accessClinical Feasibility of Zero TE Skull MRI in Patients with Head Trauma in Comparison with CT: A Single-Center StudyS.B. Cho, H.J. Baek, K.H. Ryu, B.H. Choi, J.I. Moon, T.B. Kim, S.K. Kim, H. Park and M.J. HwangAmerican Journal of Neuroradiology January 2019, 40 (1) 109-115; DOI: https://doi.org/10.3174/ajnr.A5916
Morra, V.B.
- 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.
Mossa-basha, M.
- Adult BrainYou have accessCompressed Sensing–Sensitivity Encoding (CS-SENSE) Accelerated Brain Imaging: Reduced Scan Time without Reduced Image QualityJ.E. Vranic, N.M. Cross, Y. Wang, D.S. Hippe, E. de Weerdt and M. Mossa-BashaAmerican Journal of Neuroradiology January 2019, 40 (1) 92-98; DOI: https://doi.org/10.3174/ajnr.A5905