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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
    Open Access
    Texture Analysis in Cerebral Gliomas: A Review of the Literature
    N. Soni, S. Priya and G. Bathla
    American Journal of Neuroradiology June 2019, 40 (6) 928-934; DOI: https://doi.org/10.3174/ajnr.A6075
  • Head & Neck
    You have access
    Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence
    H. Fujii, A. Fujita, H. Kanazawa, E. Sung, O. Sakai and H. Sugimoto
    American Journal of Neuroradiology June 2019, 40 (6) 1037-1042; DOI: https://doi.org/10.3174/ajnr.A6078
  • You have access
    The Continued Rise in Professional Use of Social Media at Scientific Meetings: An Analysis of Twitter Use during the ASNR 2018 Annual Meeting
    G. D'Anna, M.M. Chen, J.L. McCarty, A. Radmanesh and A.L. Kotsenas
    American Journal of Neuroradiology June 2019, 40 (6) 935-937; DOI: https://doi.org/10.3174/ajnr.A6064
  • Head & Neck
    You have access
    Evaluating the Utility of a Postprocessing Algorithm for MRI Evaluation of Optic Neuritis
    L. Stunkel, A. Sharma, M.S. Parsons, A. Salter and G.P. Van Stavern
    American Journal of Neuroradiology June 2019, 40 (6) 1043-1048; DOI: https://doi.org/10.3174/ajnr.A6057
  • EDITOR'S CHOICEAdult Brain
    Open Access
    Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI
    S. Winzeck, S.J.T. Mocking, R. Bezerra, M.J.R.J. Bouts, E.C. McIntosh, I. Diwan, P. Garg, A. Chutinet, W.T. Kimberly, W.A. Copen, P.W. Schaefer, H. Ay, A.B. Singhal, K. Kamnitsas, B. Glocker, A.G. Sorensen and O. Wu
    American Journal of Neuroradiology June 2019, 40 (6) 938-945; DOI: https://doi.org/10.3174/ajnr.A6077

    Convolutional neural networks were trained on combinations of DWI, ADC, and low b-value-weighted images from 116 subjects. The performances of the networks (measured by the Dice score, sensitivity, and precision) were compared with one another and with ensembles of 5 networks. An ensemble of convolutional neural networks trained on DWI, ADC, and low b-value-weighted images produced the most accurate acute infarct segmentation over individual networks. Automated volumes correlated with manually measured volumes for the independent cohort.

  • Head & Neck
    You have access
    A Scoring System for Prediction of Cervical Lymph Node Metastasis in Patients with Head and Neck Squamous Cell Carcinoma
    M.S. Chung, Y.J. Choi, S.O. Kim, Y.S. Lee, J.Y. Hong, J.H. Lee and J.H. Baek
    American Journal of Neuroradiology June 2019, 40 (6) 1049-1054; DOI: https://doi.org/10.3174/ajnr.A6066
  • EDITOR'S CHOICEAdult Brain
    Open Access
    A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study
    H.G. Roh, E.Y. Kim, I.S. Kim, H.J. Lee, J.J. Park, S.B. Lee, J.W. Choi, Y.S. Jeon, M. Park, S.U. Kim and H.J. Kim
    American Journal of Neuroradiology June 2019, 40 (6) 946-953; DOI: https://doi.org/10.3174/ajnr.A6068

    The purpose of this study was to introduce a multiphase MRA collateral map derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. The authors generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP in 67 patients using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. The interobserver reliabilities forcollateral grading using multiphase MRA or MRP collateral maps were excellent. They conclude that the dynamic signals of dynamic contrast-enhanced MRA can generate multiphasecollateral images and show the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.

  • Adult Brain
    Open Access
    Diagnostic Accuracy of High-Resolution Black-Blood MRI in the Evaluation of Intracranial Large-Vessel Arterial Occlusions
    A.S. Al-Smadi, R.N. Abdalla, A.H. Elmokadem, A. Shaibani, M.C. Hurley, M.B. Potts, B.S. Jahromi, T.J. Carroll and S.A. Ansari
    American Journal of Neuroradiology June 2019, 40 (6) 954-959; DOI: https://doi.org/10.3174/ajnr.A6065
  • FELLOWS' JOURNAL CLUBAdult Brain
    Open Access
    Surveillance of Unruptured Intracranial Saccular Aneurysms Using Noncontrast 3D-Black-Blood MRI: Comparison of 3D-TOF and Contrast-Enhanced MRA with 3D-DSA
    C. Zhu, X. Wang, L. Eisenmenger, B. Tian, Q. Liu, A.J. Degnan, C. Hess, D. Saloner and J. Lu
    American Journal of Neuroradiology June 2019, 40 (6) 960-966; DOI: https://doi.org/10.3174/ajnr.A6080

    Sixty-four patients with 68 saccular unruptured intracranial aneurysms were recruited. Patients underwent 3T MR imaging with 3D-TOF-MRA, 3D black-blood MR imaging, and contrast-enhanced MRA, and they underwent 3D rotational angiography within 2 weeks. The neck, width, and height of the unruptured intracranial aneurysms were measured by 2 radiologists independently on 3D rotational angiography and 3 MR imaging sequences. 3D black-blood MR imaging demonstrates the best agreement with DSA, with the smallest limits of agreement and measurement error. 3D-TOF-MRA had the largest limits of agreement and measurement error. The authors conclude that 3D black-blood MR imaging achieves better accuracy for aneurysm size measurements compared with 3D-TOF, using 3D rotational angiography as a criterion standard.

  • Adult Brain
    Open Access
    Baseline and Evolutionary Radiologic Features in Sporadic, Hemorrhagic Brain Cavernous Malformations
    K.D. Flemming, S. Kumar, G. Lanzino and W. Brinjikji
    American Journal of Neuroradiology June 2019, 40 (6) 967-972; DOI: https://doi.org/10.3174/ajnr.A6076

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