Index by author
Bardis, M.
- EDITOR'S CHOICEAdult BrainOpen AccessDeep-Learning Convolutional Neural Networks Accurately Classify Genetic Mutations in GliomasP. Chang, J. Grinband, B.D. Weinberg, M. Bardis, M. Khy, G. Cadena, M.-Y. Su, S. Cha, C.G. Filippi, D. Bota, P. Baldi, L.M. Poisson, R. Jain and D. ChowAmerican Journal of Neuroradiology July 2018, 39 (7) 1201-1207; DOI: https://doi.org/10.3174/ajnr.A5667
MR imaging data and molecular information were retrospectively obtained from The Cancer Imaging Archives for 259 patients with either low- or high-grade gliomas. A convolutional neural network was trained to classify IDH1 mutation status, 1p/19q codeletion, and MGMT promotor methylation status. Classification had high accuracy: IDH1 mutation status, 94%; 1p/19q codeletion, 92%; and MGMT promotor methylation status, 83%. The authors conclude that this shows the feasibility of a deep-learning CNN approach for the accurate classification of individual genetic mutations of both low- and high-grade gliomas and that the relevant MR imaging features acquired from an added dimensionality-reduction technique are concordant with existing literature, showing that neural networks are capable of learning key imaging components without prior feature selection or human directed training.
Barr, J.S.
- Spine Imaging and Spine Image-Guided InterventionsYou have accessEfficacy and Safety of Percutaneous Microwave Ablation and Cementoplasty in the Treatment of Painful Spinal Metastases and MyelomaM.A. Khan, G. Deib, B. Deldar, A.M. Patel and J.S. BarrAmerican Journal of Neuroradiology July 2018, 39 (7) 1376-1383; DOI: https://doi.org/10.3174/ajnr.A5680
Bathla, G.
- Adult BrainOpen AccessCerebrovascular Manifestations of Neurosarcoidosis: An Underrecognized Aspect of the Imaging SpectrumG. Bathla, P. Watal, S. Gupta, P. Nagpal, S. Mohan and T. MoritaniAmerican Journal of Neuroradiology July 2018, 39 (7) 1194-1200; DOI: https://doi.org/10.3174/ajnr.A5492
Batouty, N.M.
- You have accessCommon Origin of Brachiocephalic and Left Common Carotid Arteries: Proposal of New TerminologyA.M. Tawfik, D.M. Sobh and N.M. BatoutyAmerican Journal of Neuroradiology July 2018, 39 (7) E86-E87; DOI: https://doi.org/10.3174/ajnr.A5659
Belay, A.
- Head and Neck ImagingOpen AccessRole of the Apparent Diffusion Coefficient as a Predictor of Tumor Progression in Patients with ChordomaT. Sasaki, T. Moritani, A. Belay, A.A. Capizzano, S.P. Sato, Y. Sato, P. Kirby, S. Ishitoya, A. Oya, M. Toda and K. TakahashiAmerican Journal of Neuroradiology July 2018, 39 (7) 1316-1321; DOI: https://doi.org/10.3174/ajnr.A5664
Bellmann-strobl, J.
- Spine Imaging and Spine Image-Guided InterventionsOpen AccessMRI-Based Methods for Spinal Cord Atrophy Evaluation: A Comparison of Cervical Cord Cross-Sectional Area, Cervical Cord Volume, and Full Spinal Cord Volume in Patients with Aquaporin-4 Antibody Seropositive Neuromyelitis Optica Spectrum DisordersC. Chien, A.U. Brandt, F. Schmidt, J. Bellmann-Strobl, K. Ruprecht, F. Paul and M. ScheelAmerican Journal of Neuroradiology July 2018, 39 (7) 1362-1368; DOI: https://doi.org/10.3174/ajnr.A5665
Bendszus, M.
- Head and Neck ImagingYou have accessMSVAT-SPACE-STIR and SEMAC-STIR for Reduction of Metallic Artifacts in 3T Head and Neck MRIT. Hilgenfeld, M. Prager, F.S. Schwindling, M. Nittka, P. Rammelsberg, M. Bendszus, S. Heiland and A. JuerchottAmerican Journal of Neuroradiology July 2018, 39 (7) 1322-1329; DOI: https://doi.org/10.3174/ajnr.A5678
- FELLOWS' JOURNAL CLUBNeurointerventionYou have accessEndovascular Treatment of Dural Arteriovenous Fistulas Using Transarterial Liquid Embolization in Combination with Transvenous Balloon-Assisted Protection of the Venous SinusD.F. Vollherbst, C. Ulfert, U. Neuberger, C. Herweh, M. Laible, S. Nagel, M. Bendszus and M.A. MöhlenbruchAmerican Journal of Neuroradiology July 2018, 39 (7) 1296-1302; DOI: https://doi.org/10.3174/ajnr.A5651
The authors report their single-center experience in 22 patients with dural arteriovenous fistulas who were treated with transarterial liquid embolization in combination with transvenous balloon-assisted protection of the affected venous sinus. All patients were symptomatic, of whom 81.8% presented with tinnitus; 9.1%, with ocular symptoms; and 9.1%, with headache. Most fistulas were located at the transverse and/or sigmoid sinus. The most frequent fistula type was Cognard IIa+b (40.9%), followed by Cognard I (31.8%) and Cognard IIa (27.3%)/Borden I (59.1%), and Borden II (40.9%). The affected sinus could be preserved in all except for 1 patient in whom it was sacrificed in a second treatment procedure by coil embolization. The overall complete occlusion rate was 86.4%. The overall complication rate was 20%, with transient and permanent morbidity and mortality of 8%, 0%, and 0%, respectively. They conclude that transarterial liquid embolization of dural arteriovenous fistulas in combination with transvenous balloon-assisted protection of the venous sinus is feasible and safe.
Berlit, P.
- FELLOWS' JOURNAL CLUBAdult BrainYou have accessVisualization and Classification of Deeply Seated Collateral Networks in Moyamoya Angiopathy with 7T MRIT. Matsushige, M. Kraemer, T. Sato, P. Berlit, M. Forsting, M.E. Ladd, R. Jabbarli, U. Sure, N. Khan, M. Schlamann and K.H. WredeAmerican Journal of Neuroradiology July 2018, 39 (7) 1248-1254; DOI: https://doi.org/10.3174/ajnr.A5700
This study aimed to evaluate morphologic patterns and the delineation of deeply seated collateral networks using ultra-high-field MRA in comparison with conventional DSA in 15 patients. Sequences acquired at 7T were TOF-MRA with 0.22 X 0.22 X 0.41 mm3 resolution and MPRAGE with 0.7 X 0.7 X 0.7 mm3 resolution. The relevant deeply seated collateral networks were classified into 2 categories and 6 pathways. A total of 100 collateral networks were detected on DSA; 106, on TOF-MRA; and 73, on MPRAGE. Delineation of deeply seated collateral networks was comparable between TOF-MRA and DSA. The authors demonstrate excellent delineation of 6 distinct deeply seated collateral network pathways in Moyamoya angiopathy.
Besseling, R.M.H.
- FunctionalYou have accessAbnormal Blood Oxygen Level–Dependent Fluctuations in Focal Cortical Dysplasia and the Perilesional Zone: Initial FindingsL. Gupta, P.A.M. Hofman, R.M.H. Besseling, J.F.A. Jansen and W.H. BackesAmerican Journal of Neuroradiology July 2018, 39 (7) 1310-1315; DOI: https://doi.org/10.3174/ajnr.A5684
Bezuidenhout, A.F.
- EDITOR'S CHOICEAdult BrainYou have accessRelationship between Cough-Associated Changes in CSF Flow and Disease Severity in Chiari I Malformation: An Exploratory Study Using Real-Time MRIA.F. Bezuidenhout, D. Khatami, C.B. Heilman, E.M. Kasper, S. Patz, N. Madan, Y. Zhao and R.A. BhadeliaAmerican Journal of Neuroradiology July 2018, 39 (7) 1267-1272; DOI: https://doi.org/10.3174/ajnr.A5670
The authors correlated disease severity in symptomatic patients with Chiari I malformation with cough-associated changes in CSF flow as measured with real-time MR imaging. Patients were classified into 2 groups by neurosurgeons blinded to MR imaging measurements: 1) nonspecific Chiari I malformation (5/13)—Chiari I malformation with nonspecific symptoms like non-cough-related or mild occasional cough-related headache, neck pain, dizziness, paresthesias, and/or trouble swallowing; 2) specific Chiari I malformation (8/13)—patients with Chiari I malformation with specific symptoms and/or objective findings like severe cough-related headache, myelopathy, syringomyelia, and muscle atrophy. There was a significant negative correlation between the percentage change in CSF stroke volume (resting to post coughing) and Chiari I malformation disease severity. They conclude that assessment of CSF flow response to a coughing challenge has the potential to become a valuable objective noninvasive test for clinical assessment of disease severity in patients with Chiari I malformation.
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