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Table of Contents

April 01, 2017; Volume 38,Issue 4

Perspectives

  • You have access
    Perspectives
    Mehmet Emin Adin
    American Journal of Neuroradiology April 2017, 38 (4) 663; DOI: https://doi.org/10.3174/ajnr.P0033

Review Article

  • EXTRACRANIAL VASCULAR
    Open Access
    Imaging Carotid Atherosclerosis Plaque Ulceration: Comparison of Advanced Imaging Modalities and Recent Developments
    J. Yuan, A. Usman, T. Das, A.J. Patterson, J.H. Gillard and M.J. Graves
    American Journal of Neuroradiology April 2017, 38 (4) 664-671; DOI: https://doi.org/10.3174/ajnr.A5026

Patient Safety

  • PEDIATRICS
    You have access
    Low-Dose CT for Craniosynostosis: Preserving Diagnostic Benefit with Substantial Radiation Dose Reduction
    J.C. Montoya, L.J. Eckel, D.R. DeLone, A.L. Kotsenas, F.E. Diehn, L. Yu, A.C. Bartley, R.E. Carter, C.H. McCollough and J.G. Fletcher
    American Journal of Neuroradiology April 2017, 38 (4) 672-677; DOI: https://doi.org/10.3174/ajnr.A5063

General Contents

  • FELLOWS' JOURNAL CLUBADULT BRAIN
    Open Access
    Genetically Defined Oligodendroglioma Is Characterized by Indistinct Tumor Borders at MRI
    D.R. Johnson, F.E. Diehn, C. Giannini, R.B. Jenkins, S.M. Jenkins, I.F. Parney and T.J. Kaufmann
    American Journal of Neuroradiology April 2017, 38 (4) 678-684; DOI: https://doi.org/10.3174/ajnr.A5070

    The authors wanted to determine whether imaging characteristics previously associated with oligodendroglial tumors were still applicable given the 2016 WHO classification that made IDH mutation and 1p/19q codeletion the defining features of oligodendroglioma. They found that 92% of genetically defined oligodendrogliomas had noncircumscribed borders, compared with 45% of non-1p/19q codeleted tumors with at least partial histologic oligodendroglial morphology. Ninety-nine percent of oligodendrogliomas were heterogeneous on T1- and/or T2-weighted imaging.

  • EDITOR'S CHOICEADULT BRAIN
    You have access
    Combining Diffusion Tensor Metrics and DSC Perfusion Imaging: Can It Improve the Diagnostic Accuracy in Differentiating Tumefactive Demyelination from High-Grade Glioma?
    S.B. Hiremath, A. Muraleedharan, S. Kumar, C. Nagesh, C. Kesavadas, M. Abraham, T.R. Kapilamoorthy and B. Thomas
    American Journal of Neuroradiology April 2017, 38 (4) 685-690; DOI: https://doi.org/10.3174/ajnr.A5089

    Fourteen patients with tumefactive demyelinating lesions and 21 patients with high-grade gliomas underwent MR imaging with conventional, DTI, and DSC perfusion imaging. Conventional imaging sequences had a sensitivity of 80.9% and specificity of 57.1% in differentiating high-grade gliomas from tumefactive demyelinating lesions. DTI metrics (p:q tensor decomposition) and DSC perfusion demonstrated a statistically significant difference among enhancing portions in tumefactive demyelinating lesions and high-grade gliomas. The highest specificity was found for ADC, the anisotropic component of the diffusion tensor, and relative CBV. The authors conclude that DTI and DSC perfusion add profoundly to conventional imaging in differentiating tumefactive demyelinating lesions and high-grade gliomas.

  • ADULT BRAIN
    You have access
    Differences in Callosal and Forniceal Diffusion between Patients with and without Postconcussive Migraine
    L.M. Alhilali, J. Delic and S. Fakhran
    American Journal of Neuroradiology April 2017, 38 (4) 691-695; DOI: https://doi.org/10.3174/ajnr.A5073
  • ADULT BRAIN
    Open Access
    Noninvasive Evaluation of CBF and Perfusion Delay of Moyamoya Disease Using Arterial Spin-Labeling MRI with Multiple Postlabeling Delays: Comparison with 15O-Gas PET and DSC-MRI
    S. Hara, Y. Tanaka, Y. Ueda, S. Hayashi, M. Inaji, K. Ishiwata, K. Ishii, T. Maehara and T. Nariai
    American Journal of Neuroradiology April 2017, 38 (4) 696-702; DOI: https://doi.org/10.3174/ajnr.A5068
  • EDITOR'S CHOICEADULT BRAIN
    You have access
    MR Imaging of Individual Perfusion Reorganization Using Superselective Pseudocontinuous Arterial Spin-Labeling in Patients with Complex Extracranial Steno-Occlusive Disease
    V. Richter, M. Helle, M.J.P. van Osch, T. Lindner, A.S. Gersing, P. Tsantilas, H.-H. Eckstein, C. Preibisch and C. Zimmer
    American Journal of Neuroradiology April 2017, 38 (4) 703-711; DOI: https://doi.org/10.3174/ajnr.A5090

    Super selective pseudocontinuous arterial spin-labeling with a circular labeling spot enabling selective vessel labeling was added to routine imaging in a prospective pilot study in 50 patients with extracranial steno-occlusive disease. The detected vessel occlusions/stenoses and perfusion patterns corresponded between cerebral DSA and super selective pseudocontinuous ASL maps in all cases. Perfusion deficits on DSC-CBF maps significantly correlated with those on super selective pseudocontinuous ASL maps. The authors conclude that superselectivepseudocontinuousASL is a robust technique for regional brain perfusion imaging, suitable for the noninvasive diagnostics of individual patient perfusion patterns.

  • ADULT BRAIN
    Open Access
    Cerebral Temperature Dysregulation: MR Thermographic Monitoring in a Nonhuman Primate Study of Acute Ischemic Stroke
    S. Dehkharghani, C.C. Fleischer, D. Qiu, M. Yepes and F. Tong
    American Journal of Neuroradiology April 2017, 38 (4) 712-720; DOI: https://doi.org/10.3174/ajnr.A5059
  • ADULT BRAIN
    You have access
    Benign Enhancing Foramen Magnum Lesions: Clinical Report of a Newly Recognized Entity
    B.J. McGuinness, J.P. Morrison, S.K. Brew and M.W. Moriarty
    American Journal of Neuroradiology April 2017, 38 (4) 721-725; DOI: https://doi.org/10.3174/ajnr.A5085
  • ADULT BRAIN
    Open Access
    Influence of T1-Weighted Signal Intensity on FSL Voxel-Based Morphometry and FreeSurfer Cortical Thickness
    S. Chung, X. Wang and Y.W. Lui
    American Journal of Neuroradiology April 2017, 38 (4) 726-728; DOI: https://doi.org/10.3174/ajnr.A5053
  • INTERVENTIONAL
    Open Access
    Comparison of the Diagnostic Utility of 4D-DSA with Conventional 2D- and 3D-DSA in the Diagnosis of Cerebrovascular Abnormalities
    C. Sandoval-Garcia, P. Yang, T. Schubert, S. Schafer, S. Hetzel, A. Ahmed and C. Strother
    American Journal of Neuroradiology April 2017, 38 (4) 729-734; DOI: https://doi.org/10.3174/ajnr.A5137
  • EDITOR'S CHOICEINTERVENTIONAL
    You have access
    Feasibility of Flat Panel Detector CT in Perfusion Assessment of Brain Arteriovenous Malformations: Initial Clinical Experience
    M. Garcia, T.W. Okell, M. Gloor, M.A. Chappell, P. Jezzard, O. Bieri and J.V. Byrne
    American Journal of Neuroradiology April 2017, 38 (4) 735-739; DOI: https://doi.org/10.3174/ajnr.A5091

    Five patients with brain arteriovenous malformations were studied with flat panel detector CT, DSC-MR imaging, and vessel-encoded pseudocontinuous arterial spin-labeling. Flat panel detector CT, which was originally thought to measure blood volume, correlated more closely with ASL-CBF and DSC-CBF than with DSC-CBV. Flat panel detector CT perfusion depends on the time point chosen for data collection, which is triggered early in patients with AVMs. This finding, in combination with high data variability, makes flat panel detector CT inappropriate for perfusion assessment in brain AVMs.

  • INTERVENTIONAL
    Open Access
    Application of Time-Resolved 3D Digital Subtraction Angiography to Plan Cerebral Arteriovenous Malformation Radiosurgery
    K.-K. Chen, W.-Y. Guo, H.-C. Yang, C.-J. Lin, C.-H.F. Wu, S. Gehrisch, M. Kowarschik, Y.-T. Wu and W.-Y. Chung
    American Journal of Neuroradiology April 2017, 38 (4) 740-746; DOI: https://doi.org/10.3174/ajnr.A5074
  • FELLOWS' JOURNAL CLUBINTERVENTIONAL
    Open Access
    Evaluation of Collaterals and Clot Burden Using Time-Resolved C-Arm Conebeam CT Angiography in the Angiography Suite: A Feasibility Study
    P. Yang, K. Niu, Y. Wu, T. Struffert, A. Doerfler, P. Holter, B. Aagaard-Kienitz, C. Strother and G.-H. Chen
    American Journal of Neuroradiology April 2017, 38 (4) 747-752; DOI: https://doi.org/10.3174/ajnr.A5072

    Ten C-arm conebeam CT perfusion datasets from 10 subjects with acute ischemic stroke acquired before endovascular treatment were retrospectively processed to generate time-resolved conebeam CTA. From time-resolved conebeam CTA, 2 experienced readers evaluated the clot burden and collateral flow in consensus by using previously reported scoring systems and assessed the clinical value of this novel imaging technique. The 2 readers agreed that time-revolved C-arm conebeam CTA was the preferred method for evaluating the clot burden and collateral flow compared with other conventional imaging methods. They conclude that comprehensive evaluations of clot burden and collateral flow are feasible by using time-resolved C-arm conebeam CTA data acquired in the angiography suite.

  • INTERVENTIONAL
    You have access
    Lack of Association between Statin Use and Angiographic and Clinical Outcomes after Pipeline Embolization for Intracranial Aneurysms
    W. Brinjikji, H. Cloft, S. Cekirge, D. Fiorella, R.A. Hanel, P. Jabbour, P. Lylyk, C. McDougall, C. Moran, A. Siddiqui, I. Szikora and D.F. Kallmes
    American Journal of Neuroradiology April 2017, 38 (4) 753-758; DOI: https://doi.org/10.3174/ajnr.A5078
  • INTERVENTIONAL
    You have access
    Interventional Radiology Clinical Practice Guideline Recommendations for Neurovascular Disorders Are Not Based on High-Quality Systematic Reviews
    A.B. Chong, M. Taylor, G. Schubert and M. Vassar
    American Journal of Neuroradiology April 2017, 38 (4) 759-765; DOI: https://doi.org/10.3174/ajnr.A5079
  • EXTRACRANIAL VASCULAR
    You have access
    Intracranial and Extracranial Neurovascular Manifestations of Takayasu Arteritis
    K.M. Bond, D. Nasr, V. Lehman, G. Lanzino, H.J. Cloft and W. Brinjikji
    American Journal of Neuroradiology April 2017, 38 (4) 766-772; DOI: https://doi.org/10.3174/ajnr.A5095
  • EXTRACRANIAL VASCULAR
    You have access
    CT Angiography of the Head in Extracorporeal Membrane Oxygenation
    J. Acharya, A.G. Rajamohan, M.R. Skalski, M. Law, P. Kim and W. Gibbs
    American Journal of Neuroradiology April 2017, 38 (4) 773-776; DOI: https://doi.org/10.3174/ajnr.A5060
  • HEAD & NECK
    You have access
    What Is the Ideal Core Number for Ultrasonography-Guided Thyroid Biopsy of Cytologically Inconclusive Nodules?
    S.Y. Hahn, J.H. Shin and Y.L. Oh
    American Journal of Neuroradiology April 2017, 38 (4) 777-781; DOI: https://doi.org/10.3174/ajnr.A5075
  • HEAD & NECK
    You have access
    Improved Diagnostic Accuracy Using Arterial Phase CT for Lateral Cervical Lymph Node Metastasis from Papillary Thyroid Cancer
    J.E. Park, J.H. Lee, K.H. Ryu, H.S. Park, M.S. Chung, H.W. Kim, Y.J. Choi and J.H. Baek
    American Journal of Neuroradiology April 2017, 38 (4) 782-788; DOI: https://doi.org/10.3174/ajnr.A5054
  • HEAD & NECK
    You have access
    Benign Miliary Osteoma Cutis of the Face: A Common Incidental CT Finding
    D. Kim, G.A. Franco, H. Shigehara, J. Asaumi and P. Hildenbrand
    American Journal of Neuroradiology April 2017, 38 (4) 789-794; DOI: https://doi.org/10.3174/ajnr.A5096
  • FELLOWS' JOURNAL CLUBPEDIATRICS
    Open Access
    Imaging Characteristics of Pediatric Diffuse Midline Gliomas with Histone H3 K27M Mutation
    M.S. Aboian, D.A. Solomon, E. Felton, M.C. Mabray, J.E. Villanueva-Meyer, S. Mueller and S. Cha
    American Journal of Neuroradiology April 2017, 38 (4) 795-800; DOI: https://doi.org/10.3174/ajnr.A5076

    The 2016 WHO Classification of Tumors of the Central Nervous System includes “diffuse midline glioma with histone H3 K27M mutation” as a new diagnostic entity. This study of 33 patients with diffuse midline gliomas found histone H3 K27M mutation was present in 24 patients (72.7%) and absent in 9 (27.3%). The location was the thalamus in 27.3%; the pons in 42.4%; within the vermis/fourth ventricle in 15%; and the spinal cord in 6%. The radiographic features of diffuse midline gliomas with histone H3 K27M mutation were highly variable, ranging from expansile masses without enhancement or necrosis with large areas of surrounding infiltrative growth to peripherally enhancing masses with central necrosis with significant mass effect.

  • PEDIATRICS
    Open Access
    Diffusion Tensor Imaging of White Matter in Children Born from Preeclamptic Gestations
    E.A. Figueiró-Filho, B.A. Croy, J.N. Reynolds, F. Dang, D. Piro, M.T. Rätsep, N.D. Forkert, A. Paolozza, G.N. Smith and P.W. Stroman
    American Journal of Neuroradiology April 2017, 38 (4) 801-806; DOI: https://doi.org/10.3174/ajnr.A5064
  • PEDIATRICS
    You have access
    Diagnostic Performance of Ultrafast Brain MRI for Evaluation of Abusive Head Trauma
    S.F. Kralik, M. Yasrebi, N. Supakul, C. Lin, L.G. Netter, R.A. Hicks, R.A. Hibbard, L.L. Ackerman, M.L. Harris and C.Y. Ho
    American Journal of Neuroradiology April 2017, 38 (4) 807-813; DOI: https://doi.org/10.3174/ajnr.A5093
  • PEDIATRICS
    Open Access
    White Matter Tract Pathology in Pediatric Anoxic Brain Injury from Drowning
    M. Ishaque, J.H. Manning, M.D. Woolsey, C.G. Franklin, F.S. Salinas and P.T. Fox
    American Journal of Neuroradiology April 2017, 38 (4) 814-819; DOI: https://doi.org/10.3174/ajnr.A5097
  • PEDIATRICS
    You have access
    Patterns of Brain Injury in Newborns Treated with Extracorporeal Membrane Oxygenation
    M.A. Wien, M.T. Whitehead, D. Bulas, M. Ridore, L. Melbourne, G. Oldenburg, B.L. Short and A.N. Massaro
    American Journal of Neuroradiology April 2017, 38 (4) 820-826; DOI: https://doi.org/10.3174/ajnr.A5092
  • PEDIATRICS
    Open Access
    Measurement of Lactate Content and Amide Proton Transfer Values in the Basal Ganglia of a Neonatal Piglet Hypoxic-Ischemic Brain Injury Model Using MRI
    Y. Zheng and X.-M. Wang
    American Journal of Neuroradiology April 2017, 38 (4) 827-834; DOI: https://doi.org/10.3174/ajnr.A5066
  • SPINE
    You have access
    Postoperative MRI Evaluation of a Radiofrequency Cordotomy Lesion for Intractable Cancer Pain
    A. Vedantam, P. Hou, T.L. Chi, K.R Hess, P.M. Dougherty, E. Bruera and A. Viswanathan
    American Journal of Neuroradiology April 2017, 38 (4) 835-839; DOI: https://doi.org/10.3174/ajnr.A5100
  • SPINE
    You have access
    Fluid-Signal Structures in the Cervical Spinal Cord on MRI: Anterior Median Fissure versus Central Canal
    T.A. Tomsick, E. Peak and L. Wang
    American Journal of Neuroradiology April 2017, 38 (4) 840-845; DOI: https://doi.org/10.3174/ajnr.A5121
  • SPINE
    You have access
    Diagnostic Quality of 3D T2-SPACE Compared with T2-FSE in the Evaluation of Cervical Spine MRI Anatomy
    F.H. Chokshi, G. Sadigh, W. Carpenter and J.W. Allen
    American Journal of Neuroradiology April 2017, 38 (4) 846-850; DOI: https://doi.org/10.3174/ajnr.A5080

Letters: (Online only)

  • You have access
    Doing More with Less: A Nice and Useful Idea!
    M.I Vargas, A. Platon, J. Boto and K.-O. Lovblad
    American Journal of Neuroradiology April 2017, 38 (4) E26-E27; DOI: https://doi.org/10.3174/ajnr.A5067
  • You have access
    Retrograde Approach through the Posterior Communicating Artery and Anterior Communicating Artery to the Ophthalmic Artery
    M. Saglam and O. Kizilkilic
    American Journal of Neuroradiology April 2017, 38 (4) E28; DOI: https://doi.org/10.3174/ajnr.A5081
  • You have access
    Is Catheter Angiography Still Necessary for the Follow-Up of Spinal Malformations after Treatment?
    M.I. Vargas, J. Boto and Z. Kulcsar
    American Journal of Neuroradiology April 2017, 38 (4) E29; DOI: https://doi.org/10.3174/ajnr.A5087
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American Journal of Neuroradiology: 38 (4)
American Journal of Neuroradiology
Vol. 38, Issue 4
1 Apr 2017
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