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Index by author

September 01, 2020; Volume 41,Issue 9

  1. Sablot, D.

    1. FELLOWS' JOURNAL CLUBInterventional
      Predictors of Favorable Outcome after Endovascular Thrombectomy in MRI: Selected Patients with Acute Basilar Artery Occlusion
      M. Mahmoudi, C. Dargazanli, F. Cagnazzo, I. Derraz, C. Arquizan, A. Wacogne, J. Labreuche, A. Bonafe, D. Sablot, P.H. Lefevre, G. Gascou, N. Gaillard, C. Scott, V. Costalat and I. Mourand
      American Journal of Neuroradiology September 2020, 41 (9) 1670-1676; DOI: https://doi.org/10.3174/ajnr.A6741

      The authors analyzed consecutive MR imaging–selected patients with acute basilar artery occlusions endovascularly treated within the first 24 hours after symptom onset. Successful and complete reperfusion was defined as modified TICI scores 2b–3 and 3, respectively. Outcome at 90 days was analyzed. One hundred ten patients were included. In 10 patients, endovascular treatment was aborted for failed proximal/distal access. Overall, successful reperfusion was achieved in 81.8% of cases. At 90 days, favorable outcome was 31.8%, with a mortality rate of 40.9%; the prevalence of symptomatic intracranial hemorrhage within 24 hours was 2.7%. The median time from symptom onset to groin puncture was 410 minutes. In this series of MR imaging–selected patients with acute basilar artery occlusions, complete reperfusion was the strongest predictor of a good outcome. Lower pretreatment NIHSS, the presence of posterior communicating artery collateral flow, the absence of atrial fibrillation, and intravenous thrombolysis administration were associated with favorable outcome.

  2. Sachs, J.R.

    1. Pediatric Neuroimaging
      Internal Auditory Canal Diverticula among Pediatric Patients: Prevalence and Assessment for Hearing Loss and Anatomic Associations
      P.M. Bunch, M.E. Zapadka, C.M. Lack, E.P. Kiell, D.J. Kirse and J.R. Sachs
      American Journal of Neuroradiology September 2020, 41 (9) 1712-1717; DOI: https://doi.org/10.3174/ajnr.A6691

  3. Sakka, L.

    1. Pediatrics
      Assessment of Maturational Changes in White Matter Anisotropy and Volume in Children: A DTI Study
      G. Coll, E. de Schlichting, L. Sakka, J.-M. Garcier, H. Peyre and J.-J. Lemaire
      American Journal of Neuroradiology September 2020, 41 (9) 1726-1732; DOI: https://doi.org/10.3174/ajnr.A6709

  4. Sato, N.

    1. FELLOWS' JOURNAL CLUBHead & Neck
      Open Access
      MRI Findings of Immune Checkpoint Inhibitor–Induced Hypophysitis: Possible Association with Fibrosis
      R. Kurokawa, Y. Ota, W. Gonoi, A. Hagiwara, M. Kurokawa, H. Mori, E. Maeda, S. Amemiya, Y. Usui, N. Sato, Y. Nakata, T. Moritani and O. Abe
      American Journal of Neuroradiology September 2020, 41 (9) 1683-1689; DOI: https://doi.org/10.3174/ajnr.A6692

      This retrospective international multicenter study comprised 20 patients with melanoma who were being treated with immune checkpoint inhibitors and clinically diagnosed with immune checkpoint inhibitor–induced hypophysitis. Three radiologists evaluated the following MR imaging findings: enlargement of the pituitary gland and stalk; homogeneity of enhancement of the pituitary gland; presence/absence of a well-defined poorly enhanced area and, if present, its location, shape, and signal intensity in T2WI; and enhancement pattern in contrast-enhanced dynamic MR imaging. Enlargement of the pituitary gland and stalk was observed in 12 and 20 patients, respectively. Nineteen patients showed poorly enhanced lesions (geographic hypoenhancing lesions) in the anterior lobe, and 11 of these lesions showed hypointensity on T2WI. Thyrotropin deficiency and corticotropin deficiency were observed in 19/20 and 12/17 patients, respectively. The authors conclude that pituitary geographic hypoenhancing lesions in the anterior lobe of the pituitary gland are characteristic and frequent MR imaging findings of immune checkpoint inhibitor–induced hypophysitis.

  5. Savatovsky, J.S.

    1. Neurointervention
      Fusion Image Guidance for Supra-Aortic Vessel Catheterization in Neurointerventions: A Feasibility Study
      A. Feddal, S. Escalard, F. Delvoye, R. Fahed, J.P. Desilles, K. Zuber, H. Redjem, J.S. Savatovsky, G. Ciccio, S. Smajda, M. Ben Maacha, M. Mazighi, M. Piotin and R. Blanc
      American Journal of Neuroradiology September 2020, 41 (9) 1663-1669; DOI: https://doi.org/10.3174/ajnr.A6707

  6. Scaramozza, M.

    1. Adult Brain
      Patterning Chronic Active Demyelination in Slowly Expanding/Evolving White Matter MS Lesions
      C. Elliott, D.L. Arnold, H. Chen, C. Ke, L. Zhu, I. Chang, E. Cahir-McFarland, E. Fisher, B. Zhu, S. Gheuens, M. Scaramozza, V. Beynon, N. Franchimont, D.P. Bradley and S. Belachew
      American Journal of Neuroradiology September 2020, 41 (9) 1584-1591; DOI: https://doi.org/10.3174/ajnr.A6742

  7. Scheer, R.V.

    1. Head & Neck
      Open Access
      COVID-19–Associated Bifacial Weakness with Paresthesia Subtype of Guillain-Barré Syndrome
      K.L. Hutchins, J.H. Jansen, A.D. Comer, R.V. Scheer, G.S. Zahn, A.E. Capps, L.M. Weaver and N.A. Koontz
      American Journal of Neuroradiology September 2020, 41 (9) 1707-1711; DOI: https://doi.org/10.3174/ajnr.A6654

  8. Schmitz, B.L.

    1. Interventional
      Shape Modification is Common in Woven EndoBridge–Treated Intracranial Aneurysms: A Longitudinal Quantitative Analysis Study
      J. Rosskopf, M. Braun, J. Dreyhaupt, M. Beer, B.L. Schmitz and Y. Ozpeynirci
      American Journal of Neuroradiology September 2020, 41 (9) 1652-1656; DOI: https://doi.org/10.3174/ajnr.A6669

  9. Scott, C.

    1. FELLOWS' JOURNAL CLUBInterventional
      Predictors of Favorable Outcome after Endovascular Thrombectomy in MRI: Selected Patients with Acute Basilar Artery Occlusion
      M. Mahmoudi, C. Dargazanli, F. Cagnazzo, I. Derraz, C. Arquizan, A. Wacogne, J. Labreuche, A. Bonafe, D. Sablot, P.H. Lefevre, G. Gascou, N. Gaillard, C. Scott, V. Costalat and I. Mourand
      American Journal of Neuroradiology September 2020, 41 (9) 1670-1676; DOI: https://doi.org/10.3174/ajnr.A6741

      The authors analyzed consecutive MR imaging–selected patients with acute basilar artery occlusions endovascularly treated within the first 24 hours after symptom onset. Successful and complete reperfusion was defined as modified TICI scores 2b–3 and 3, respectively. Outcome at 90 days was analyzed. One hundred ten patients were included. In 10 patients, endovascular treatment was aborted for failed proximal/distal access. Overall, successful reperfusion was achieved in 81.8% of cases. At 90 days, favorable outcome was 31.8%, with a mortality rate of 40.9%; the prevalence of symptomatic intracranial hemorrhage within 24 hours was 2.7%. The median time from symptom onset to groin puncture was 410 minutes. In this series of MR imaging–selected patients with acute basilar artery occlusions, complete reperfusion was the strongest predictor of a good outcome. Lower pretreatment NIHSS, the presence of posterior communicating artery collateral flow, the absence of atrial fibrillation, and intravenous thrombolysis administration were associated with favorable outcome.

  10. Seekins, J.

    1. EDITOR'S CHOICEPediatrics
      Deep Learning for Pediatric Posterior Fossa Tumor Detection and Classification: A Multi-Institutional Study
      J.L. Quon, W. Bala, L.C. Chen, J. Wright, L.H. Kim, M. Han, K. Shpanskaya, E.H. Lee, E. Tong, M. Iv, J. Seekins, M.P. Lungren, K.R.M. Braun, T.Y. Poussaint, S. Laughlin, M.D. Taylor, R.M. Lober, H. Vogel, P.G. Fisher, G.A. Grant, V. Ramaswamy, N.A. Vitanza, C.Y. Ho, M.S.B. Edwards, S.H. Cheshier and K.W. Yeom
      American Journal of Neuroradiology September 2020, 41 (9) 1718-1725; DOI: https://doi.org/10.3174/ajnr.A6704

      This study cohort comprised 617 children (median age, 92 months; 56% males) from 5 pediatric institutions with posterior fossa tumors: diffuse midline glioma of the pons, medulloblastoma, pilocytic astrocytoma, and ependymoma. There were 199 controls. Tumor histology served as ground truth except for diffuse midline glioma of the pons, which was primarily diagnosed by MR imaging. A modified ResNeXt-50-32x4d architecture served as the backbone for a multitask classifier model, using T2-weighted MRI as input to detect the presence of tumor and predict tumor class. Model tumor detection accuracy exceeded an AUC of 0.99 and was similar to that of 4 radiologists. Model tumor classification accuracy was 92% with an F1 score of 0.80. The model was most accurate at predicting diffuse midline glioma of the pons, followed by pilocytic astrocytoma and medulloblastoma. Ependymoma prediction was the least accurate.

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