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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

  • You have access
    Lyme Disease: What the Neuroradiologist Needs to Know
    H.A. Valand, A. Goyal, D.A. Melendez, S.S. Matharu, H.S. Mangat and R.K. Tu
    American Journal of Neuroradiology December 2019, 40 (12) 1998-2000; DOI: https://doi.org/10.3174/ajnr.A6301
  • EDITOR'S CHOICEInterventional
    You have access
    Identification of Vortex Cores in Cerebral Aneurysms on 4D Flow MRI
    K. Futami, T. Uno, K. Misaki, S. Tamai, I. Nambu, N. Uchiyama and M. Nakada
    American Journal of Neuroradiology December 2019, 40 (12) 2111-2116; DOI: https://doi.org/10.3174/ajnr.A6322

    The authors subjected 40 aneurysms (37 unruptured, 3 ruptured) to 4D flow MR imaging. They visualized streamlines with velocities below the threshold—that is, a percentage value of the aneurysm maximum inflow velocity—and progressively decreased the threshold to identify vortex cores as thin, streamline bundles with minimum velocities. A simple flow pattern (single vortex core) was identified in 27 aneurysms; the other 13 exhibited a complex flow pattern. The cores were stable in 32 and unstable in 8 aneurysms. Significantly more aneurysms with-than-without blebs or daughter sacs had a complex flow pattern. The identification of vortex cores on 4D flow MR imaging may help to stratify the rupture risk of unruptured cerebral aneurysms.

  • Patient Safety
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    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
  • FELLOWS' JOURNAL CLUBPediatrics
    You have access
    Incidental Brain MRI Findings in Children: A Systematic Review and Meta-Analysis
    V. Dangouloff-Ros, C.-J. Roux, G. Boulouis, R. Levy, N. Nicolas, C. Lozach, D. Grevent, F. Brunelle, N. Boddaert and O. Naggara
    American Journal of Neuroradiology November 2019, 40 (11) 1818-1823; DOI: https://doi.org/10.3174/ajnr.A6281

    Seven studies were included, reporting 5938 children (mean age, 11.3 ± 2.8 years). Incidental findings were present in 16.4% of healthy children, intracranial cysts being the most frequent (10.2%). Nonspecific white matter hyperintensities were reported in 1.9%, Chiari I malformation was found in 0.8%, and intracranial neoplasms were reported in 0.2%. In total, the prevalence of incidental findings needing follow-up was 2.6%. The prevalence of incidental findings is much more frequent in children than previously reported in adults, but clinically significant incidental findings were present in <1 in 38 children.

  • Interventional
    You have access
    Placement of a Stent within a Flow Diverter Improves Aneurysm Occlusion Rates
    O. Ocal, A. Peker, S. Balci and A. Arat
    American Journal of Neuroradiology November 2019, 40 (11) 1932-1938; DOI: https://doi.org/10.3174/ajnr.A6237
  • Pediatrics
    You have access
    Age-Dependent Signal Intensity Changes in the Structurally Normal Pediatric Brain on Unenhanced T1-Weighted MR Imaging
    T.F. Flood, P.R. Bhatt, A. Jensen, J.A. Maloney, N.V. Stence and D.M. Mirsky
    American Journal of Neuroradiology November 2019, 40 (11) 1824-1828; DOI: https://doi.org/10.3174/ajnr.A6254
  • Interventional
    Open Access
    Novel Models for Identification of the Ruptured Aneurysm in Patients with Subarachnoid Hemorrhage with Multiple Aneurysms
    H. Rajabzadeh-Oghaz, J. Wang, N. Varble, S.-I. Sugiyama, A. Shimizu, L. Jing, J. Liu, X. Yang, A.H. Siddiqui, J.M. Davies and H. Meng
    American Journal of Neuroradiology November 2019, 40 (11) 1939-1946; DOI: https://doi.org/10.3174/ajnr.A6259

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