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American Journal of Neuroradiology
American Journal of Neuroradiology

American Journal of Neuroradiology

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Welcome to the new AJNR, Updated Hall of Fame, and more. Read the full announcements.


AJNR is seeking candidates for the position of Associate Section Editor, AJNR Case Collection. Read the full announcement.

 

MY CONTENT

  • Adult Brain
    You have access
    Unilateral Nonvisualization of a Transverse Dural Sinus on Phase-Contrast MRV: Frequency and Differentiation from Sinus Thrombosis on Noncontrast MRI
    Y.-M. Chang, A.L. Kuhn, N. Porbandarwala, R. Rojas, V. Ivanovic and R.A. Bhadelia
    American Journal of Neuroradiology January 2020, 41 (1) 115-121; DOI: https://doi.org/10.3174/ajnr.A6337
  • You have access
    Redundant Neurovascular Imaging: Who Is to Blame and What Is the Value?
    E. Beheshtian, S. Emamzadehfard, S. Sahraian, R. Jalilianhasanpour and D.M. Yousem
    American Journal of Neuroradiology January 2020, 41 (1) 35-39; DOI: https://doi.org/10.3174/ajnr.A6329
  • Interventional
    You have access
    Emergency Conversion to General Anesthesia Is a Tolerable Risk in Patients Undergoing Mechanical Thrombectomy
    F. Flottmann, H. Leischner, G. Broocks, T.D. Faizy, A. Aigner, M. Deb-Chatterji, G. Thomalla, J. Krauel, M. Issleib, J. Fiehler and C. Brekenfeld
    American Journal of Neuroradiology January 2020, 41 (1) 122-127; DOI: https://doi.org/10.3174/ajnr.A6321
  • FELLOWS' JOURNAL CLUBAdult Brain
    Open Access
    Deep Transfer Learning and Radiomics Feature Prediction of Survival of Patients with High-Grade Gliomas
    W. Han, L. Qin, C. Bay, X. Chen, K.-H. Yu, N. Miskin, A. Li, X. Xu and G. Young
    American Journal of Neuroradiology January 2020, 41 (1) 40-48; DOI: https://doi.org/10.3174/ajnr.A6365

    Fifty patients with high-grade gliomas from the authors’ hospital and 128 patients with high-grade gliomas from The Cancer Genome Atlas were included in this study. For each patient, the authors calculated 348 hand-crafted radiomics features and 8192 deep features generated by a pretrained convolutional neural network. They then applied feature selection and Elastic Net-Cox modeling to differentiate patients into long- and short-term survivors. In the 50 patients with high-grade gliomas from their institution, the combined feature analysis framework classified the patients into long- and short-term survivor groups with a log-rank test P value <.001. In the 128 patients from The Cancer Genome Atlas, the framework classified patients into long- and short-term survivors with a log-rank test P value of .014. In conclusion, the authors report successful production and initial validation of a deep transfer learning model combining radiomics and deep features to predict overall survival of patients with glioblastoma from postcontrast T1-weighed brain MR imaging.

  • Interventional
    You have access
    Imaging Triage of Patients with Late-Window (6–24 Hours) Acute Ischemic Stroke: A Comparative Study Using Multiphase CT Angiography versus CT Perfusion
    M.A. Almekhlafi, W.G. Kunz, R.A. McTaggart, M.V. Jayaraman, M. Najm, S.H. Ahn, E. Fainardi, M. Rubiera, A.V. Khaw, A. Zini, M.D. Hill, A.M. Demchuk, M. Goyal and B.K. Menon
    American Journal of Neuroradiology January 2020, 41 (1) 129-133; DOI: https://doi.org/10.3174/ajnr.A6327
  • Adult Brain
    Open Access
    Dynamic Contrast-Enhanced MR Imaging of Nonenhancing T2 High-Signal-Intensity Lesions in Baseline and Posttreatment Glioblastoma: Temporal Change and Prognostic Value
    I. Hwang, S.H. Choi, C.-K. Park, T.M. Kim, S.-H. Park, J.K. Won, I.H. Kim, S.-T. Lee, R.-E. Yoo, K.M. Kang, T.J. Yun, J.-H. Kim and C.-H. Sohn
    American Journal of Neuroradiology January 2020, 41 (1) 49-56; DOI: https://doi.org/10.3174/ajnr.A6323
  • Patient Safety
    You have access
    Safety and Diagnostic Efficacy of Gadobenate Dimeglumine in MRI of the Brain and Spine of Neonates and Infants
    D.S. Enterline, K.W Martin, H.A Parmar, F.M Triulzi and C. Colosimo
    American Journal of Neuroradiology December 2019, 40 (12) 2001-2009; DOI: https://doi.org/10.3174/ajnr.A6319
  • Interventional
    Open Access
    How Flow Reduction Influences the Intracranial Aneurysm Occlusion: A Prospective 4D Phase-Contrast MRI Study
    O. Brina, P. Bouillot, P. Reymond, A.S. Luthman, C. Santarosa, M. Fahrat, K.O. Lovblad, P. Machi, B.M.A. Delattre, V.M. Pereira and M.I. Vargas
    American Journal of Neuroradiology December 2019, 40 (12) 2117-2123; DOI: https://doi.org/10.3174/ajnr.A6312
  • EDITOR'S CHOICESpine
    You have access
    Anatomy of the Great Posterior Radiculomedullary Artery
    V.H. Perez Perez, J. Hernesniemi and J.E. Small
    American Journal of Neuroradiology December 2019, 40 (12) 2010-2015; DOI: https://doi.org/10.3174/ajnr.A6304

    The authors describe the microsurgical anatomy of the great posterior radiculomedullary artery with emphasis on its morphometric parameters as well as its implications for spinal cord blood supply. The artery of Adamkiewicz in spinal cord specimens (n = 50) was injected with colored latex until the small-caliber arterial vessels were filled and the great posterior radiculomedullary artery was identified. The course, diameter, and location of great posterior radiculomedullary artery were documented. A great posterior radiculomedullary artery was identified in 36 (72%) spinal cord specimens. In 11 (22%) specimens, bilateral great posterior radiculomedullary arteries were present. In 13 cases (26%), a unilateral left-sided great posterior radiculomedullary artery was identified. In 11 cases (22%), a unilateral right-sided great posterior radiculomedullary artery was identified.

  • Interventional
    You have access
    Optimizing the Quality of 4D-DSA Temporal Information
    K.L. Ruedinger, E.C. Harvey, S. Schafer, M.A. Speidel and C.M. Strother
    American Journal of Neuroradiology December 2019, 40 (12) 2124-2129; DOI: https://doi.org/10.3174/ajnr.A6290

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