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Table of Contents

January 01, 2019; Volume 40,Issue 1

Perspectives

  • Perspectives
    You have access
    Perspectives
    Tuncay Peker
    American Journal of Neuroradiology January 2019, 40 (1) 1; DOI: https://doi.org/10.3174/ajnr.P0049

Editorial

  • Editorial
    You have access
    Women Rising to the Top: The Tipping Point for the ASNR
    C.C. Meltzer, P.C. Sanelli, M.B. Hepp and J.A. Bello
    American Journal of Neuroradiology January 2019, 40 (1) 2-4; DOI: https://doi.org/10.3174/ajnr.A5893

Review Article

  • Head & Neck
    Open Access
    Imaging of Surgical Free Flaps in Head and Neck Reconstruction
    J.L. McCarty, A.S. Corey, M.W. El-Deiry, H.M. Baddour, B.M. Cavazuti and P.A. Hudgins
    American Journal of Neuroradiology January 2019, 40 (1) 5-13; DOI: https://doi.org/10.3174/ajnr.A5776

Practice Perspectives

  • Practice Perspectives
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    The ASNR-ACR-RSNA Common Data Elements Project: What Will It Do for the House of Neuroradiology?
    A.E. Flanders and J.E. Jordan
    American Journal of Neuroradiology January 2019, 40 (1) 14-18; DOI: https://doi.org/10.3174/ajnr.A5780
  • Practice Perspectives
    You have access
    Bias in Neuroradiology Peer Review: Impact of a “Ding” on “Dinging” Others
    P. Charkhchi, B. Wang, B. Caffo and D.M. Yousem
    American Journal of Neuroradiology January 2019, 40 (1) 19-24; DOI: https://doi.org/10.3174/ajnr.A5908

General Contents

  • EDITOR'S CHOICEAdult Brain
    You have access
    Deep Learning–Based Detection of Intracranial Aneurysms in 3D TOF-MRA
    T. Sichtermann, A. Faron, R. Sijben, N. Teichert, J. Freiherr and M. Wiesmann
    American Journal of Neuroradiology January 2019, 40 (1) 25-32; DOI: https://doi.org/10.3174/ajnr.A5911

    In a retrospective study, the authors established a system for the detection of intracranial aneurysms from 3D TOF-MRA data. The system is based on an open-source neural network, originally developed for segmentation of anatomic structures in medical images. Eighty-five datasets of patients with a total of 115 intracranial aneurysms were used to train the system and evaluate its performance. Manual annotation of aneurysms based on radiologic reports and critical revision of image data served as the reference standard. The highest overall sensitivity of this system for the detection of intracranial aneurysms was 90% with a sensitivity of 96% for aneurysms with a diameter of 3–7 mm and 100% for aneurysms of >7 mm. The best location-dependent performance was in the posterior circulation.

  • Adult Brain
    Open Access
    Automated ASPECTS on Noncontrast CT Scans in Patients with Acute Ischemic Stroke Using Machine Learning
    H. Kuang, M. Najm, D. Chakraborty, N. Maraj, S.I. Sohn, M. Goyal, M.D. Hill, A.M. Demchuk, B.K. Menon and W. Qiu
    American Journal of Neuroradiology January 2019, 40 (1) 33-38; DOI: https://doi.org/10.3174/ajnr.A5889
  • FELLOWS' JOURNAL CLUBAdult Brain
    Open Access
    Radiomics-Based Intracranial Thrombus Features on CT and CTA Predict Recanalization with Intravenous Alteplase in Patients with Acute Ischemic Stroke
    W. Qiu, H. Kuang, J. Nair, Z. Assis, M. Najm, C. McDougall, B. McDougall, K. Chung, A.T. Wilson, M. Goyal, M.D. Hill, A.M. Demchuk and B.K. Menon
    American Journal of Neuroradiology January 2019, 40 (1) 39-44; DOI: https://doi.org/10.3174/ajnr.A5918

    Sixty-seven patients with ICA/M1 MCA segment thrombus treated with IV alteplase were included in this analysis. Three hundred twenty-six radiomics features were extracted from each thrombus on both NCCT and CTA images. Linear discriminative analysis was applied to select features most strongly associated with early recanalization with IV alteplase. These features were then used to train a linear support vector machine classifier. Thrombus radiomics features derived from NCCT and CTA are more predictive of recanalization with IV alteplase in patients with acute ischemic stroke with proximal occlusion than previously known thrombus imaging features such as length, volume, and permeability.

  • EDITOR'S CHOICEAdult Brain
    You have access
    Improved White Matter Cerebrovascular Reactivity after Revascularization in Patients with Steno-Occlusive Disease
    L. McKetton, L. Venkatraghavan, C. Rosen, D.M. Mandell, K. Sam, O. Sobczyk, J. Poublanc, E. Gray, A. Crawley, J. Duffin, J.A. Fisher and D.J. Mikulis
    American Journal of Neuroradiology January 2019, 40 (1) 45-50; DOI: https://doi.org/10.3174/ajnr.A5912

    Thirty-five patients with steno-occlusive disease (Moyamoya disease [n = 24], Moyamoya syndrome [n = 3], atherosclerosis [n = 6], vasculitis [n = 1], and idiopathic stenosis [n = 1]) who underwent unilateral brain revascularization using a direct superficial temporal artery–to-MCA bypass were evaluated. WM cerebrovascular reactivity was measured preoperatively and postoperatively using BOLD MR imaging during iso-oxic hypercapnic changes in end-tidal carbon dioxide. WM cerebrovascular reactivity significantly improved after direct unilateral superficial temporal artery–to-MCA bypass in the revascularized hemisphere in the MCA territory and in the anterior cerebral artery territory.

  • Adult Brain
    Open Access
    Infarct Volume Predicts Hospitalization Costs in Anterior Circulation Large-Vessel Occlusion Stroke
    C.D. Streib, S. Rangaraju, D.T. Campbell, D.G. Winger, S.L. Paolini, A.J. Zhang, B.T. Jankowitz, A.P. Jadhav and T.G. Jovin
    American Journal of Neuroradiology January 2019, 40 (1) 51-58; DOI: https://doi.org/10.3174/ajnr.A5917
  • FELLOWS' JOURNAL CLUBAdult Brain
    You have access
    MRI Quantitative T2* Mapping to Predict Dominant Composition of In Vitro Thrombus
    R. Bourcier, R. Pautre, M. Mirza, C. Castets, J. Darcourt, J. Labreuche, L. Detraz, H. Desal, J.-M. Serfaty and C. Toquet
    American Journal of Neuroradiology January 2019, 40 (1) 59-64; DOI: https://doi.org/10.3174/ajnr.A5938

    Thirty-five thrombus analogs of different compositions were scanned with an MR imaging quantitative T2* mapping sequence. Two radiologists, blinded to thrombus composition, measured the thrombus-T2* relaxation time twice, at an interval of 2 weeks. Quantitative histologic evaluations of red blood cell content were performed. Inter- and intraobserver reproducibility of the thrombus-T2* relaxation time was assessed by calculating intraclass correlation coefficients. MR imaging quantitative T2* mapping can reliably identify the thrombus red blood cell content in vitro. This fast, easy-to-use sequence could be implemented in routine practice.

  • FELLOWS' JOURNAL CLUBAdult Brain
    You have access
    Two-Layered Susceptibility Vessel Sign and High Overestimation Ratio on MRI Are Predictive of Cardioembolic Stroke
    R. Bourcier, I. Derraz, S. Bracard, C. Oppenheim and O. Naggara on behalf of the THRACE Investigators
    American Journal of Neuroradiology January 2019, 40 (1) 65-67; DOI: https://doi.org/10.3174/ajnr.A5865

    Two characteristics of the susceptibility vessel sign, overestimation ratio (overR), a quantitative evaluation of the susceptibility vessel sign, and the 2-layered susceptibility vessel sign (TL-SVS), were reported to predict cardioembolic stroke. These 2 biomarkers, on 1.5T or 3T systems (159 and 101 patients, respectively), demonstrated high specificity (0.77 at 1.5T and 1 at 3T) and their simultaneous presence is highly associated with cardioembolism.

  • Adult Brain
    Open Access
    Differences in the Calculated Transvenous Pressure Drop between Chronic Hydrocephalus and Idiopathic Intracranial Hypertension
    G.A. Bateman and A.R. Bateman
    American Journal of Neuroradiology January 2019, 40 (1) 68-73; DOI: https://doi.org/10.3174/ajnr.A5883
  • Adult Brain
    You have access
    Absence of Disproportionately Enlarged Subarachnoid Space Hydrocephalus, a Sharp Callosal Angle, or Other Morphologic MRI Markers Should Not Be Used to Exclude Patients with Idiopathic Normal Pressure Hydrocephalus from Shunt Surgery
    S. Agerskov, M. Wallin, P. Hellström, D. Ziegelitz, C. Wikkelsö and M. Tullberg
    American Journal of Neuroradiology January 2019, 40 (1) 74-79; DOI: https://doi.org/10.3174/ajnr.A5910
  • Adult Brain
    Open Access
    Brain β-Amyloid and Atrophy in Individuals at Increased Risk of Cognitive Decline
    I.K. Martikainen, N. Kemppainen, J. Johansson, J. Teuho, S. Helin, Y. Liu, S. Helisalmi, H. Soininen, R. Parkkola, T. Ngandu, M. Kivipelto and J.O. Rinne
    American Journal of Neuroradiology January 2019, 40 (1) 80-85; DOI: https://doi.org/10.3174/ajnr.A5891
  • Adult Brain
    You have access
    Defining the Normal Dorsal Contour of the Corpus Callosum with Time
    K.L. Krause, D. Howard, D.R. Pettersson, S. Elstrott, D. Ross, J.T. Obayashi, R. Barajas, A. Bonde and J.M. Pollock
    American Journal of Neuroradiology January 2019, 40 (1) 86-91; DOI: https://doi.org/10.3174/ajnr.A5886
  • Adult Brain
    You have access
    Compressed Sensing–Sensitivity Encoding (CS-SENSE) Accelerated Brain Imaging: Reduced Scan Time without Reduced Image Quality
    J.E. Vranic, N.M. Cross, Y. Wang, D.S. Hippe, E. de Weerdt and M. Mossa-Basha
    American Journal of Neuroradiology January 2019, 40 (1) 92-98; DOI: https://doi.org/10.3174/ajnr.A5905
  • EDITOR'S CHOICEAdult Brain
    Open Access
    Determinants of Deep Gray Matter Atrophy in Multiple Sclerosis: A Multimodal MRI Study
    G. Pontillo, S. Cocozza, R. Lanzillo, C. Russo, M.D. Stasi, C. Paolella, E.A. Vola, C. Criscuolo, P. Borrelli, G. Palma, E. Tedeschi, V.B. Morra, A. Elefante and A. Brunetti
    American Journal of Neuroradiology January 2019, 40 (1) 99-106; DOI: https://doi.org/10.3174/ajnr.A5915

    Seventy-seven patients with MS and 44 healthy controls were enrolled in this cross-sectional study. MR imaging investigation included volumetric, diffusion tensor imaging, perfusion weighted imaging, and Quantitative Susceptibility Mapping analyses. Deep gray matter structures were automatically segmented to obtain volumes and mean values for each MR imaging metric in the thalamus, caudate, putamen, and globus pallidus. Patients with MS showed a multifaceted involvement of the thalamus and basal ganglia, with significant atrophy of all deep gray matter structures. In the relapsing-remitting MS group, WM lesion burden proved to be the main contributor to volume loss for all deep gray matter structures.

  • Commentary
    You have access
    What Causes Deep Gray Matter Atrophy in Multiple Sclerosis?
    M.M. Schoonheim and J.J.G. Geurts
    American Journal of Neuroradiology January 2019, 40 (1) 107-108; DOI: https://doi.org/10.3174/ajnr.A5942
  • Adult Brain
    You have access
    Clinical Feasibility of Zero TE Skull MRI in Patients with Head Trauma in Comparison with CT: A Single-Center Study
    S.B. Cho, H.J. Baek, K.H. Ryu, B.H. Choi, J.I. Moon, T.B. Kim, S.K. Kim, H. Park and M.J. Hwang
    American Journal of Neuroradiology January 2019, 40 (1) 109-115; DOI: https://doi.org/10.3174/ajnr.A5916
  • Interventional
    You have access
    Coil Embolization in Patients with Recurrent Cerebral Aneurysms Who Previously Underwent Surgical Clipping
    S.-T. Kim, J.W. Baek, S.-C. Jin, J.H. Park, J.S. Kim, H.Y. Kim, H.W. Jeong and Y.G. Jeong
    American Journal of Neuroradiology January 2019, 40 (1) 116-121; DOI: https://doi.org/10.3174/ajnr.A5909
  • Interventional
    You have access
    Y-Stent-Assisted Coiling of Wide-Neck Bifurcation Intracranial Aneurysms: A Meta-Analysis
    F. Cagnazzo, N. Limbucci, S. Nappini, L. Renieri, A. Rosi, A. Laiso, D. Tiziano di Carlo, P. Perrini and S. Mangiafico
    American Journal of Neuroradiology January 2019, 40 (1) 122-128; DOI: https://doi.org/10.3174/ajnr.A5900
  • Interventional
    Open Access
    Osseous versus Nonosseous Spinal Epidural Arteriovenous Fistulas: Experiences of 13 Patients
    Y. Song, S.H. Cho, D.W. Lee, J.J. Sheen, J.H. Shin and D.C. Suh
    American Journal of Neuroradiology January 2019, 40 (1) 129-134; DOI: https://doi.org/10.3174/ajnr.A5904
  • Head & Neck
    Open Access
    Bone Subtraction Iodine Imaging Using Area Detector CT for Evaluation of Skull Base Invasion by Nasopharyngeal Carcinoma
    T. Hiyama, H. Kuno, K. Sekiya, S. Tsushima, O. Sakai, M. Kusumoto and T. Kobayashi
    American Journal of Neuroradiology January 2019, 40 (1) 135-141; DOI: https://doi.org/10.3174/ajnr.A5906
  • Head & Neck
    You have access
    Solitary Parathyroid Adenoma Localization in Technetium Tc99m Sestamibi SPECT and Multiphase Multidetector 4D CT
    T.H. Vu, D. Schellingerhout, N. Guha-Thakurta, J. Sun, W. Wei, S.C. Kappadth, N. Perrier, E.E. Kim, E. Rohren, H.H. Chuang and F.C. Wong
    American Journal of Neuroradiology January 2019, 40 (1) 142-149; DOI: https://doi.org/10.3174/ajnr.A5901
  • Head & Neck
    You have access
    Parapharyngeal Space Venous Malformation: An Imaging Mimic of Pleomorphic Adenoma
    C.M. Tomblinson, G.P. Fletcher, T.K. Lidner, C.P. Wood, S.M. Weindling and J.M. Hoxworth
    American Journal of Neuroradiology January 2019, 40 (1) 150-153; DOI: https://doi.org/10.3174/ajnr.A5859
  • Pediatrics
    Open Access
    MR Imaging–Based Radiomic Signatures of Distinct Molecular Subgroups of Medulloblastoma
    M. Iv, M. Zhou, K. Shpanskaya, S. Perreault, Z. Wang, E. Tranvinh, B. Lanzman, S. Vajapeyam, N.A. Vitanza, P.G. Fisher, Y.J. Cho, S. Laughlin, V. Ramaswamy, M.D. Taylor, S.H. Cheshier, G.A. Grant, T. Young Poussaint, O. Gevaert and K.W. Yeom
    American Journal of Neuroradiology January 2019, 40 (1) 154-161; DOI: https://doi.org/10.3174/ajnr.A5899
  • Pediatrics
    Open Access
    Early Diagnosis of Spastic Cerebral Palsy in Infants with Periventricular White Matter Injury Using Diffusion Tensor Imaging
    H. Jiang, X. Li, C. Jin, M. Wang, C. Liu, K.C. Chan and J. Yang
    American Journal of Neuroradiology January 2019, 40 (1) 162-168; DOI: https://doi.org/10.3174/ajnr.A5914
  • Pediatrics
    Open Access
    Cesarean Delivery Impacts Infant Brain Development
    S.C. Deoni, S.H. Adams, X. Li, T.M. Badger, R.T. Pivik, C.M. Glasier, R.H. Ramakrishnaiah, A.C. Rowell and X. Ou
    American Journal of Neuroradiology January 2019, 40 (1) 169-177; DOI: https://doi.org/10.3174/ajnr.A5887
  • Pediatrics
    Open Access
    MR Imaging of the Brain in Neurologic Wilson Disease
    X.-E. Yu, S. Gao, R.-M. Yang and Y.-Z. Han
    American Journal of Neuroradiology January 2019, 40 (1) 178-183; DOI: https://doi.org/10.3174/ajnr.A5936
  • Pediatrics
    Open Access
    MRI Abnormalities Predominate in the Bottom Part of the Sulcus with Type II Focal Cortical Dysplasia: A Quantitative Study
    Z. Liu, W. Hu, Z. Sun, X. Wang, L. Liu, X. Shao, K. Zhang, Y. Ma and J. Zhang
    American Journal of Neuroradiology January 2019, 40 (1) 184-190; DOI: https://doi.org/10.3174/ajnr.A5919
  • Pediatrics
    You have access
    Reliability of MR Imaging–Based Posterior Fossa and Brain Stem Measurements in Open Spinal Dysraphism in the Era of Fetal Surgery
    M. Aertsen, J. Verduyckt, F. De Keyzer, T. Vercauteren, F. Van Calenbergh, L. De Catte, S. Dymarkowski, P. Demaerel and J. Deprest
    American Journal of Neuroradiology January 2019, 40 (1) 191-198; DOI: https://doi.org/10.3174/ajnr.A5930
  • Pediatrics
    You have access
    “Ears of the Lynx” MRI Sign Is Associated with SPG11 and SPG15 Hereditary Spastic Paraplegia
    B. Pascual, S.T. de Bot, M.R. Daniels, M.C. França, C. Toro, M. Riverol, P. Hedera, M.T. Bassi, N. Bresolin, B.P. van de Warrenburg, B. Kremer, J. Nicolai, P. Charles, J. Xu, S. Singh, N.J. Patronas, S.H. Fung, M.D. Gregory and J.C. Masdeu
    American Journal of Neuroradiology January 2019, 40 (1) 199-203; DOI: https://doi.org/10.3174/ajnr.A5935

35 Years Ago in AJNR

  • 35 Years Ago in AJNR
    You have access
    Celebrating 35 Years of the AJNR
    American Journal of Neuroradiology January 2019, 40 (1) 204; DOI: https://doi.org/10.3174/ajnr.P0079

Online Features

  • Letters

    • LETTER
      You have access
      T1-Hyperintense Plaques on Intracranial-versus-Extracranial Vessel Wall MRI
      W. Yuan and J. Sun
      American Journal of Neuroradiology January 2019, 40 (1) E1; DOI: https://doi.org/10.3174/ajnr.A5878
    • LETTER
      You have access
      Reply:
      C. Zhu, X. Tian, A.J. Degnan, J. Lu and Q. Liu
      American Journal of Neuroradiology January 2019, 40 (1) E2; DOI: https://doi.org/10.3174/ajnr.A5895
    • LETTER
      You have access
      Disproportionate International Contributions to Subspecialties of Neuroradiology in the American Journal of Neuroradiology
      S. Emamzadehfard, V. Eslami, D.M. Yousem and S. Sahraian
      American Journal of Neuroradiology January 2019, 40 (1) E3-E4; DOI: https://doi.org/10.3174/ajnr.A5885
  • Erratum

    • Erratum
      You have access
      Erratum
      American Journal of Neuroradiology January 2019, 40 (1) E5; DOI: https://doi.org/10.3174/ajnr.A5907
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American Journal of Neuroradiology: 40 (1)
American Journal of Neuroradiology
Vol. 40, Issue 1
1 Jan 2019
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