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Index by author

August 01, 2019; Volume 40,Issue 8

  1. Mohan, S.

    1. EDITOR'S CHOICEAdult Brain
      Open Access
      Convolutional Neural Network for Automated FLAIR Lesion Segmentation on Clinical Brain MR Imaging
      M.T. Duong, J.D. Rudie, J. Wang, L. Xie, S. Mohan, J.C. Gee and A.M. Rauschecker
      American Journal of Neuroradiology August 2019, 40 (8) 1282-1290; DOI: https://doi.org/10.3174/ajnr.A6138

      This convolutional neural network was retrospectively trained on 295 brain MRIs to perform automated FLAIR lesion segmentation. Performance was evaluated on 92 validation cases using Dice scores and voxelwise sensitivity and specificity, compared with radiologists' manual segmentations. The authors' model demonstrated accurate FLAIR lesion segmentation performance (median Dice score, 0.79) on the validation dataset across a large range of lesion characteristics. Across 19 neurologic diseases, performance was significantly higher than existing methods (Dice, 0.56 and 0.41) and approached human performance (Dice, 0.81).

  2. Moreno, J.L.

    1. Adult Brain
      Open Access
      Leukoaraiosis May Confound the Interpretation of CT Perfusion in Patients Treated with Mechanical Thrombectomy for Acute Ischemic Stroke
      S. Rudilosso, C. Laredo, C. Vivancos, X. Urra, L. Llull, A. Renú, V. Obach, Y. Zhao, J.L. Moreno, A. Lopez-Rueda, S. Amaro and Á. Chamorro
      American Journal of Neuroradiology August 2019, 40 (8) 1323-1329; DOI: https://doi.org/10.3174/ajnr.A6139

  3. Mounayer, C.

    1. FELLOWS' JOURNAL CLUBNeurointervention
      Posterior Fossa Dural Arteriovenous Fistulas with Subarachnoid Venous Drainage: Outcomes of Endovascular Treatment
      L. Détraz, K. Orlov, V. Berestov, V. Borodetsky, A. Rouchaud, L.G. de Abreu Mattos and C. Mounayer
      American Journal of Neuroradiology August 2019, 40 (8) 1363-1368; DOI: https://doi.org/10.3174/ajnr.A6140

      Twenty-six patients treated endovascularly for posterior fossa dural AVFs, type III, IV, or V, were included in this study. One hundred percent of the dural AVFs were occluded. A transarterial approach was performed in 23 dural AVFs; a combined transarterial and transvenous approach, in 2 dural AVFs; and a transvenous approach alone, in 1 dural AVF. The middle meningeal artery was the most common artery chosen to inject embolic liquid (12/26). Procedure-related morbidity was 15.4% at 24 hours, 7.7% at discharge, and 0% at 6 months. Procedure-related mortality was 0%. The authors conclude that endovascular treatment offers high occlusion rates for posterior fossa dural AVFs with low morbidity and mortality rates.

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