Index by author
Krutenkova, E.P.
- EDITOR'S CHOICEAdult BrainOpen AccessIron-Insensitive Quantitative Assessment of Subcortical Gray Matter Demyelination in Multiple Sclerosis Using the Macromolecular Proton FractionV.L. Yarnykh, E.P. Krutenkova, G. Aitmagambetova, P. Repovic, A. Mayadev, P. Qian, L.K. Jung Henson, B. Gangadharan and J.D. BowenAmerican Journal of Neuroradiology April 2018, 39 (4) 618-625; DOI: https://doi.org/10.3174/ajnr.A5542
Fast macromolecular proton fraction mapping is a recent quantitative MR imaging method for myelin assessment. Macromolecular proton fraction and T2* maps were obtained from 12 healthy controls, 18 patients with relapsing-remitting MS, and 12 patients with secondary-progressive MS using 3T MR imaging. The macromolecular proton fraction in all subcortical structures and T2* in the globus pallidus, putamen, and caudate nucleus demonstrated a significant monotonic decrease from controls to patients with relapsing-remitting MS and from those with relapsing-remitting MS to patients with secondary-progressive MS. The macromolecular proton fraction in all subcortical structures significantly correlated with the Expanded Disability Status Scale and MS Functional Composite scores and provides an iron-insensitive measure of demyelination.
Lasocki, A.
- Adult BrainYou have accessMRI Features Can Predict 1p/19q Status in Intracranial GliomasA. Lasocki, F. Gaillard, A. Gorelik and M. GonzalesAmerican Journal of Neuroradiology April 2018, 39 (4) 687-692; DOI: https://doi.org/10.3174/ajnr.A5572
Lee, B.
- Adult BrainOpen AccessBrain Injury Lesion Imaging Using Preconditioned Quantitative Susceptibility Mapping without Skull StrippingS. Soman, Z. Liu, G. Kim, U. Nemec, S.J. Holdsworth, K. Main, B. Lee, S. Kolakowsky-Hayner, M. Selim, A.J. Furst, P. Massaband, J. Yesavage, M.M. Adamson, P. Spincemallie, M. Moseley and Y. WangAmerican Journal of Neuroradiology April 2018, 39 (4) 648-653; DOI: https://doi.org/10.3174/ajnr.A5550
Lee, E.
- Spine Imaging and Spine Image-Guided InterventionsYou have accessMRI Features of Aquaporin-4 Antibody–Positive Longitudinally Extensive Transverse Myelitis: Insights into the Diagnosis of Neuromyelitis Optica Spectrum DisordersC.G. Chee, K.S. Park, J.W. Lee, H.W. Ahn, E. Lee, Y. Kang and H.S. KangAmerican Journal of Neuroradiology April 2018, 39 (4) 782-787; DOI: https://doi.org/10.3174/ajnr.A5551
Lee, J.W.
- Spine Imaging and Spine Image-Guided InterventionsYou have accessMRI Features of Aquaporin-4 Antibody–Positive Longitudinally Extensive Transverse Myelitis: Insights into the Diagnosis of Neuromyelitis Optica Spectrum DisordersC.G. Chee, K.S. Park, J.W. Lee, H.W. Ahn, E. Lee, Y. Kang and H.S. KangAmerican Journal of Neuroradiology April 2018, 39 (4) 782-787; DOI: https://doi.org/10.3174/ajnr.A5551
Lee, S.-K.
- FELLOWS' JOURNAL CLUBAdult BrainOpen AccessWhole-Tumor Histogram and Texture Analyses of DTI for Evaluation of IDH1-Mutation and 1p/19q-Codeletion Status in World Health Organization Grade II GliomasY.W. Park, K. Han, S.S. Ahn, Y.S. Choi, J.H. Chang, S.H. Kim, S.-G. Kang, E.H. Kim and S.-K. LeeAmerican Journal of Neuroradiology April 2018, 39 (4) 693-698; DOI: https://doi.org/10.3174/ajnr.A5569
Ninety-three patients with World Health Organization grade II gliomas with known IDH-mutation and 1p/19q-codeletion status (18 IDH1 wild-type, 45 IDH1-mutant and no 1p/19q codeletion, 30 IDH-mutant and 1p/19q codeleted tumors) underwent DTI. ROIs were drawn on every section of the T2-weighted images and transferred to the ADC and the fractional anisotropy maps to derive volume-based data of the entire tumor. Histogram and texture analyses were correlated with the IDH1-mutation and 1p/19q-codeletion status. Various histogram and texture parameters differed significantly according to IDH1-mutation and 1p/19q-codeletion status. The skewness and energy of ADC, fractional anisotropy 10th and 25th percentiles, and correlation of fractional anisotropy were independent predictors of an IDH1 wild-type in the least absolute shrinkage and selection operator. The authors conclude that whole-tumor histogram and texture features of the ADC and fractional anisotropy maps are useful for predicting the IDH1-mutation and 1p/19q-codeletion status in World Health Organization grade II gliomas.
Le Troter, A.
- EDITOR'S CHOICEAdult BrainOpen AccessEvaluation of the Sensitivity of Inhomogeneous Magnetization Transfer (ihMT) MRI for Multiple SclerosisE. Van Obberghen, S. Mchinda, A. le Troter, V.H. Prevost, P. Viout, M. Guye, G. Varma, D.C. Alsop, J.-P. Ranjeva, J. Pelletier, O. Girard and G. DuhamelAmerican Journal of Neuroradiology April 2018, 39 (4) 634-641; DOI: https://doi.org/10.3174/ajnr.A5563
Twenty-five patients with relapsing-remitting MS and 20 healthy volunteers were enrolled in a prospective study with a protocol including anatomic imaging, standard magnetization transfer, and inhomogeneous magnetization transfer imaging. Magnetization transfer and inhomogeneous magnetization transfer ratios measured in normal-appearing brain tissue and in MS lesions of patients were compared with values measured in controls. The magnetization transfer ratio and inhomogeneous magnetization transfer ratio measured in the thalami and frontal, occipital, and temporal WM of patients with MS were lower compared with those of controls. The sensitivity of the inhomogeneous magnetization transfer technique for MS was highlighted by the reduction in the inhomogeneous magnetization transfer ratio in MS lesions and in normal-appearing WM of patients compared with controls.
Levy, E.I.
- NeurointerventionOpen AccessA Patient Dose-Reduction Technique for Neuroendovascular Image-Guided Interventions: Image-Quality Comparison StudyA. Sonig, S.V. Setlur Nagesh, V.S. Fennell, S. Gandhi, L. Rangel-Castilla, C.N. Ionita, K.V. Snyder, L.N. Hopkins, D.R. Bednarek, S. Rudin, A.H. Siddiqui and E.I. LevyAmerican Journal of Neuroradiology April 2018, 39 (4) 734-741; DOI: https://doi.org/10.3174/ajnr.A5552
Li, C.Q.
- Adult BrainYou have accessEarly Hemodynamic Response Assessment of Stereotactic Radiosurgery for a Cerebral Arteriovenous Malformation Using 4D Flow MRIC.Q. Li, A. Hsiao, J. Hattangadi-Gluth, J. Handwerker and N. FaridAmerican Journal of Neuroradiology April 2018, 39 (4) 678-681; DOI: https://doi.org/10.3174/ajnr.A5535
Li, G.
- Adult BrainYou have accessDual-Energy CT in Hemorrhagic Progression of Cerebral Contusion: Overestimation of Hematoma Volumes on Standard 120-kV Images and Rectification with Virtual High-Energy Monochromatic Images after Contrast-Enhanced Whole-Body ImagingU.K. Bodanapally, K. Shanmuganathan, G. Issa, D. Dreizin, G. Li, K. Sudini and T.R. FleiterAmerican Journal of Neuroradiology April 2018, 39 (4) 658-662; DOI: https://doi.org/10.3174/ajnr.A5558
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