American Journal of Neuroradiology: 41 (6)

June 01, 2020; Volume 41,Issue 6

Perspectives

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Perspectives
Maria Isabel Vargas

American Journal of Neuroradiology June 2020, 41 (6) 943; DOI: https://doi.org/10.3174/ajnr.P0088

Editorial

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Gadolinium Deposition Safety: Seeking the Patient’s Perspective
C.A. Mallio, C.C. Quattrocchi, À. Rovira and P.M. Parizel

American Journal of Neuroradiology June 2020, 41 (6) 944-946; DOI: https://doi.org/10.3174/ajnr.A6586

Review Articles

Head & Neck

Open Access
MR-Eye: High-Resolution Microscopy Coil MRI for the Assessment of the Orbit and Periorbital Structures, Part 1: Technique and Anatomy
N.W. Dobbs, M.J. Budak, R.D. White and I.A. Zealley

American Journal of Neuroradiology June 2020, 41 (6) 947-950; DOI: https://doi.org/10.3174/ajnr.A6495
Pediatrics

Open Access
Preoperative Evaluation of Craniopagus Twins: Anatomy, Imaging Techniques, and Surgical Management
A.E. Goldman-Yassen, J.T. Goodrich, T.S. Miller and J.M. Farinhas

American Journal of Neuroradiology June 2020, 41 (6) 951-959; DOI: https://doi.org/10.3174/ajnr.A6571

Research Perspectives

Open Access
From the Eye of the Storm: Multi-Institutional Practical Perspectives on Neuroradiology from the COVID-19 Outbreak in New York City
C.D. Phillips, D.R. Shatzkes, G. Moonis, K.A. Hsu, A. Doshi and C.G. Filippi

American Journal of Neuroradiology June 2020, 41 (6) 960-965; DOI: https://doi.org/10.3174/ajnr.A6565
Open Access
Asymptomatic COVID-19: What the Neuroradiologist Needs to Know about Pulmonary Manifestations
R.F. Barajas, G. Rufener, J. Starkey, T. Duncan and C. Fuss

American Journal of Neuroradiology June 2020, 41 (6) 966-968; DOI: https://doi.org/10.3174/ajnr.A6561

General Contents

Adult Brain

Open Access
Comparison of MRI, MRA, and DSA for Detection of Cerebral Arteriovenous Malformations in Hereditary Hemorrhagic Telangiectasia
M. Vella, M.D. Alexander, M.C. Mabray, D.L. Cooke, M.R. Amans, C.M. Glastonbury, H. Kim, M.W. Wilson, D.E. Langston, M.B. Conrad and S.W. Hetts

American Journal of Neuroradiology June 2020, 41 (6) 969-975; DOI: https://doi.org/10.3174/ajnr.A6549
Adult Brain

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4D Flat Panel Conebeam CTA for In Vivo Imaging of the Microvasculature of the Human Cortex with a Novel Software Prototype
N. Huizinga, F. Keil, A. Birkhold, M. Kowarschik, S. Tritt and J. Berkefeld

American Journal of Neuroradiology June 2020, 41 (6) 976-979; DOI: https://doi.org/10.3174/ajnr.A6574
EDITOR'S CHOICEAdult Brain

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Application of Deep Learning to Predict Standardized Uptake Value Ratio and Amyloid Status on ¹⁸F-Florbetapir PET Using ADNI Data
F. Reith, M.E. Koran, G. Davidzon and G. Zaharchuk for the Alzheimer′s Disease Neuroimaging Initiative

American Journal of Neuroradiology June 2020, 41 (6) 980-986; DOI: https://doi.org/10.3174/ajnr.A6573

Using the Alzheimer's Disease Neuroimaging Initiative dataset, the authors identified 2582 18F-florbetapir PET scans, which were separated into positive and negative cases by using a standardized uptake value ratio threshold of 1.1. They trained convolutional neural networks to predict standardized uptake value ratio and classify amyloid status. The best performance was seen for ResNet-50 by using regression before classification, 3 input PET slices, and pretraining, with a standardized uptake value ratio root-mean-squared error of 0.054, corresponding to 95.1% correct amyloid status prediction. The best trained network was more accurate than humans (96% versus a mean of 88%, respectively). They conclude that deep learning algorithms can estimate standardized uptake value ratio and use this to classify 18F-florbetapir PET scans and have promise to automate this laborious calculation.
Adult Brain

Open Access
Voxel-Based Morphometry—from Hype to Hope. A Study on Hippocampal Atrophy in Mesial Temporal Lobe Epilepsy
F. Riederer, R. Seiger, R. Lanzenberger, E. Pataraia, G. Kasprian, L. Michels, J. Beiersdorf, S. Kollias, T. Czech, J. Hainfellner and C. Baumgartner

American Journal of Neuroradiology June 2020, 41 (6) 987-993; DOI: https://doi.org/10.3174/ajnr.A6545
Adult Brain

Open Access
Brain Network Disruption in Whiplash
J.P. Higgins, J.M. Elliott and T.B. Parrish

American Journal of Neuroradiology June 2020, 41 (6) 994-1000; DOI: https://doi.org/10.3174/ajnr.A6569
Adult Brain

Open Access
Value of 3T Susceptibility-Weighted Imaging in the Diagnosis of Multiple Sclerosis
M.A. Clarke, D. Pareto, L. Pessini-Ferreira, G. Arrambide, M. Alberich, F. Crescenzo, S. Cappelle, M. Tintoré, J. Sastre-Garriga, C. Auger, X. Montalban, N. Evangelou and À. Rovira

American Journal of Neuroradiology June 2020, 41 (6) 1001-1008; DOI: https://doi.org/10.3174/ajnr.A6547
Adult Brain

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Morphometric MRI Analysis: Improved Detection of Focal Cortical Dysplasia Using the MP2RAGE Sequence
T. Demerath, L. Rubensdörfer, R. Schwarzwald, A. Schulze-Bonhage, D.-M. Altenmüller, C. Kaller, T. Kober, H.-J. Huppertz and H. Urbach

American Journal of Neuroradiology June 2020, 41 (6) 1009-1014; DOI: https://doi.org/10.3174/ajnr.A6579
Adult Brain

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Prediction of Outcome Using Quantified Blood Volume in Aneurysmal SAH
W.E. van der Steen, H.A. Marquering, L.A. Ramos, R. van den Berg, B.A. Coert, A.M.M. Boers, M.D.I. Vergouwen, G.J.E. Rinkel, B.K. Velthuis, Y.B.W.E.M. Roos, C.B.L.M. Majoie, W.P. Vandertop and D. Verbaan

American Journal of Neuroradiology June 2020, 41 (6) 1015-1021; DOI: https://doi.org/10.3174/ajnr.A6575
EDITOR'S CHOICEFunctional

Open Access
Resting-State Brain Activity for Early Prediction Outcome in Postanoxic Patients in a Coma with Indeterminate Clinical Prognosis
D. Pugin, J. Hofmeister, Y. Gasche, S. Vulliemoz, K.-O. Lövblad, D. Van De Ville and S. Haller

American Journal of Neuroradiology June 2020, 41 (6) 1022-1030; DOI: https://doi.org/10.3174/ajnr.A6572

The authors used resting-state fMRI in a prospective study to compare whole-brain functional connectivity between patients with good and poor outcomes, implementing support vector machine learning. They automatically predicted coma outcome using resting-state fMRI and also compared the prediction based on resting-state fMRI with the outcome prediction based on DWI. Of 17 eligible patients who completed the study procedure (among 351 patients screened), 9 regained consciousness and 8 remained comatose. They found higher functional connectivity in patients recovering consciousness, with greater changes occurring within and between the occipitoparietal and temporofrontal regions. Coma outcome prognostication based on resting-state fMRI machine learning was very accurate, notably for identifying patients with good outcome. They conclude that resting-state fMRI might bridge the gap left in early prognostication of postanoxic patients in a coma by identifying those with both good and poor outcomes.
EDITOR'S CHOICEInterventional

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Long-Term Outcomes of the WEB Device for Treatment of Wide-Neck Bifurcation Aneurysms
M. Fujimoto, I. Lylyk, C. Bleise, P. Albiña, J. Chudyk and P. Lylyk

American Journal of Neuroradiology June 2020, 41 (6) 1031-1036; DOI: https://doi.org/10.3174/ajnr.A6548

With a mean follow-up of approximately 15 months, the authors evaluated 41 cases of wide-neck aneurysms. Overall, 78.8% of the aneurysms had complete occlusion in the last follow-up, and 19.5% required retreatment with additional endovascular devices. A good clinical outcome (mRS: 0–2) was obtained in 95.1% of the patients, and the overall treatment-related morbidity and mortality rates were 2.4% and 0.0%, respectively. They conclude that treatment of wide-neck bifurcation aneurysms with a WEB device is feasible with an acceptable safety and efficacy rate.
Interventional

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Multicenter Postmarket Analysis of the Neuroform Atlas Stent for Stent-Assisted Coil Embolization of Intracranial Aneurysms
J.-K. Burkhardt, V. Srinivasan, A. Srivatsan, F. Albuquerque, A.F. Ducruet, B. Hendricks, B.A. Gross, B.T. Jankowitz, A.J. Thomas, C.S. Ogilvy, G.A. Maragkos, A. Enriquez-Marulanda, R.W. Crowley, M.R. Levitt, L.J. Kim, C.J. Griessenauer, C.M. Schirmer, S. Dalal, K. Piper, M. Mokin, E.A. Winkler, A.A. Abla, C. McDougall, L. Birnbaum, J. Mascitelli, M. Litao, O. Tanweer, H. Riina, J. Johnson, S. Chen and P. Kan

American Journal of Neuroradiology June 2020, 41 (6) 1037-1042; DOI: https://doi.org/10.3174/ajnr.A6581
Interventional

Open Access
Long-Term Rupture Risk in Patients with Unruptured Intracranial Aneurysms Treated with Endovascular Therapy: A Systematic Review and Meta-Analysis
A. Rizvi, S.M. Seyedsaadat, M. Alzuabi, M.H. Murad, R. Kadirvel, W. Brinjikji and D.F. Kallmes

American Journal of Neuroradiology June 2020, 41 (6) 1043-1048; DOI: https://doi.org/10.3174/ajnr.A6568
Interventional

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Fast Stent Retrieval Improves Recanalization Rates of Thrombectomy: Experimental Study on Different Thrombi
S. Soize, L. Pierot, M. Mirza, G. Gunning, M. Gilvarry, M. Gawlitza, D. Vivien, M. Zuber and E. Touzé

American Journal of Neuroradiology June 2020, 41 (6) 1049-1053; DOI: https://doi.org/10.3174/ajnr.A6559
Interventional

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Relevance of Distal Arterial Collapse in Stenting of Atherosclerotic Near-Occlusion of the Carotid Artery
F. Cay, B.E. Cil, S. Balcı, E.M. Arsava, M.A. Topçuoğlu and A. Arat

American Journal of Neuroradiology June 2020, 41 (6) 1054-1060; DOI: https://doi.org/10.3174/ajnr.A6570
Head & Neck

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Fully Automated Segmentation of Globes for Volume Quantification in CT Images of Orbits using Deep Learning
L. Umapathy, B. Winegar, L. MacKinnon, M. Hill, M.I. Altbach, J.M. Miller and A. Bilgin

American Journal of Neuroradiology June 2020, 41 (6) 1061-1069; DOI: https://doi.org/10.3174/ajnr.A6538
Head & Neck

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Positive Predictive Value of Neck Imaging Reporting and Data System Categories 3 and 4 Posttreatment FDG-PET/CT in Head and Neck Squamous Cell Carcinoma
P. Wangaryattawanich, B.F. Branstetter, J.D. Ly, U. Duvvuri, D.E. Heron and T.J. Rath

American Journal of Neuroradiology June 2020, 41 (6) 1070-1075; DOI: https://doi.org/10.3174/ajnr.A6589
Head & Neck

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New Imaging Findings of Incomplete Partition Type III Inner Ear Malformation and Literature Review
R. Hong, Q. Du and Y. Pan

American Journal of Neuroradiology June 2020, 41 (6) 1076-1080; DOI: https://doi.org/10.3174/ajnr.A6576
Pediatrics

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Accuracy of MR Imaging for Detection of Sensorineural Hearing Loss in Infants with Bacterial Meningitis
G. Orman, M.K. Kukreja, J.G. Vallejo, N. Desai, T.A.G.M. Huisman and S.F. Kralik

American Journal of Neuroradiology June 2020, 41 (6) 1081-1086; DOI: https://doi.org/10.3174/ajnr.A6539
Pediatrics

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A Case Series of X-Linked Deafness-2 with Sensorineural Hearing Loss, Stapes Fixation, and Perilymphatic Gusher: MR Imaging and Clinical Features of Hypothalamic Malformations
J.-A. Prat Matifoll, M. Wilson, R. Goetti, C. Birman, B. Bennett, E. Peadon, A. Prats-Uribe and K. Prelog

American Journal of Neuroradiology June 2020, 41 (6) 1087-1093; DOI: https://doi.org/10.3174/ajnr.A6541
Pediatrics

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New MRI Findings in Fukuyama Congenital Muscular Dystrophy: Brain Stem and Venous System Anomalies
A. Hirasawa-Inoue, N. Sato, Y. Shigemoto, Y. Kimura, A. Ishiyama, E. Takeshita, M. Mori-Yoshimura, Y. Oya, Y. Takahashi, H. Komaki, H. Matsuda and M. Sasaki

American Journal of Neuroradiology June 2020, 41 (6) 1094-1098; DOI: https://doi.org/10.3174/ajnr.A6577
Pediatrics

Open Access
Effect of Age on GABA+ and Glutathione in a Pediatric Sample
M.G. Saleh, A. Papantoni, M. Mikkelsen, S.C.N. Hui, G. Oeltzschner, N.A. Puts, R.A.E. Edden and S. Carnell

American Journal of Neuroradiology June 2020, 41 (6) 1099-1104; DOI: https://doi.org/10.3174/ajnr.A6543
FELLOWS' JOURNAL CLUBPediatrics

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Fetal and Neonatal MRI Predictors of Aggressive Early Clinical Course in Vein of Galen Malformation
L. Arko, M. Lambrych, A. Montaser, D Zurakowski and D.B. Orbach

American Journal of Neuroradiology June 2020, 41 (6) 1105-1111; DOI: https://doi.org/10.3174/ajnr.A6585

The authors aimed to identify brain MR imaging characteristics obtained from fetal and early neonatal scans that can predict the clinical presentation. A total of 32 neonatal patients (21 patients in the neonatal at-risk cohort, 11 in the infantile treatment cohort) were identified. Maximal mediolateral diameter and cross-sectional area at the narrowest point of the straight/falcine sinus were most predictive of clinical evolution into the neonatal at-risk cohort. This measurement clearly and unambiguously differentiated between high- and low-risk cohorts. The ability to accurately predict clinical evolution after birth based on fetal MR imaging can be of help for both caregivers and families, enabling better preparedness for urgent treatment and better planning for allocation of resources.
FELLOWS' JOURNAL CLUBSpine

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Counterpoint: Conventional Fluoroscopy-Guided Selective Cervical Nerve Root Block—A Safe, Effective, and Efficient Modality in the Hands of an Experienced Proceduralist
F.W. Ott, R. Pluhm, K. Ozturk, A.M. McKinney and J.B. Rykken

American Journal of Neuroradiology June 2020, 41 (6) 1112-1119; DOI: https://doi.org/10.3174/ajnr.A6580

Two-hundred fifty-four conventional fluoroscopy-guided selective cervical nerve root blocks were performed via an anterolateral approach with an average fluoroscopy time of 24.3 seconds for all cases. There were no aborted procedures and no major or permanent complications. There were 14 minor complications; 12 of these were periprocedural and resolved by the 2-week follow-up visit. One-hundred eighty-five patients (75.2%) reported pain improvement of >50% from baseline at 15 minutes postinjection. The authors conclude that this study confirms that conventional fluoroscopy is as safe and effective as CT for the guidance of selective cervical nerve root block when using a meticulous technique and a nonparticulate steroid and performed by an experienced proceduralist.
Spine

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Major Radiologic and Clinical Outcomes of Total Spine MRI Performed in the Emergency Department at a Major Academic Medical Center
C.W.C. Huang, A. Ali, Y.-M. Chang, A.F. Bezuidenhout, D.B. Hackney, J.A. Edlow and R.A. Bhadelia

American Journal of Neuroradiology June 2020, 41 (6) 1120-1125; DOI: https://doi.org/10.3174/ajnr.A6578
FELLOWS' JOURNAL CLUBSpine

Open Access
High Prevalence of Spinal Cord Cavernous Malformations in the Familial Cerebral Cavernous Malformations Type 1 Cohort
M.C. Mabray, J. Starcevich, J. Hallstrom, M. Robinson, M. Bartlett, J. Nelson, A. Zafar, H. Kim, L. Morrison and B.L. Hart

American Journal of Neuroradiology June 2020, 41 (6) 1126-1130; DOI: https://doi.org/10.3174/ajnr.A6584

With prospective imaging to screen the spinal cord, the authors found SCCMs in 21 of 29 familial CCM1 patients, a prevalence of 72.4%. They conclude that the study demonstrates that SCCMs are indeed a common finding in patients with familial CCM and supports the idea of familial CCM syndrome as a progressive systemic disease that affects the entire central nervous system. They found an expected positive correlation of number of SCCMs with both patient age and number of intracranial CCMs. They also found a high prevalence of vertebral intraosseous vascular malformations (69%), including atypical (T1 hypointense) intraosseous vascular malformation in approximately 38% of the patients who underwent MR imaging screening.
Spine

Open Access
Improved Cervical Cord Lesion Detection with 3D-MP2RAGE Sequence in Patients with Multiple Sclerosis
S. Demortière, P. Lehmann, J. Pelletier, B. Audoin and V. Callot

American Journal of Neuroradiology June 2020, 41 (6) 1131-1134; DOI: https://doi.org/10.3174/ajnr.A6567

Online Features

Letters
- LETTER
  
  Open Access
  How the Lives of Neuroradiologists and Neurosurgeons Have Been Changed by COVID-19
  M.I. Vargas and T.R. Meling
  
  American Journal of Neuroradiology June 2020, 41 (6) E35; DOI: https://doi.org/10.3174/ajnr.A6562
- LETTER
  
  Open Access
  Stroke Health Care Use and COVID-19
  I. Derraz
  
  American Journal of Neuroradiology June 2020, 41 (6) E36; DOI: https://doi.org/10.3174/ajnr.A6563
- LETTER
  
  Open Access
  Neuroradiologists, Be Mindful of the Neuroinvasive Potential of COVID-19
  M. Morris and V.M. Zohrabian
  
  American Journal of Neuroradiology June 2020, 41 (6) E37-E39; DOI: https://doi.org/10.3174/ajnr.A6551
- LETTER
  
  Open Access
  “No Man is an Island” John Donne
  C.C.T. Lim and K. Tsuchiya
  
  American Journal of Neuroradiology June 2020, 41 (6) E40; DOI: https://doi.org/10.3174/ajnr.A6544
- LETTER
  
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  The Significance of Natural Anastomoses among Intracranial Vessels in Moyamoya Disease
  J. Yu, J. Zhang and J. Chen
  
  American Journal of Neuroradiology June 2020, 41 (6) E41; DOI: https://doi.org/10.3174/ajnr.A6502
- LETTER
  
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  Reply:
  S. Bonasia and T. Robert
  
  American Journal of Neuroradiology June 2020, 41 (6) E42; DOI: https://doi.org/10.3174/ajnr.A6503
- LETTER
  
  Open Access
  Myelin Imaging Can Be Affected by a Number of Factors
  A. Hagiwara, M. Hori, C. Andica, O. Abe and S. Aoki
  
  American Journal of Neuroradiology June 2020, 41 (6) E43-E44; DOI: https://doi.org/10.3174/ajnr.A6525
- LETTER
  
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  The Ubiquitous Use of Resting State as a Control Task for Language Mapping in Task-Based Functional MRI
  E.H. Middlebrooks and D.S. Sabsevitz
  
  American Journal of Neuroradiology June 2020, 41 (6) E45-E46; DOI: https://doi.org/10.3174/ajnr.A6464
- LETTER
  
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  Reply:
  O. Foesleitner, K.-H. Nenning, L. Bartha-Doering, C. Baumgartner, E. Pataraia, D. Moser, M. Schwarz, V. Schmidbauer, J.A. Hainfellner, T. Czech, C. Dorfer, G. Langs, D. Prayer, S. Bonelli and G. Kasprian
  
  American Journal of Neuroradiology June 2020, 41 (6) E47-E48; DOI: https://doi.org/10.3174/ajnr.A6597

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