American Journal of Neuroradiology: 41 (11)

November 01, 2020; Volume 41,Issue 11

Perspectives

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Perspectives
Bejoy Thomas

American Journal of Neuroradiology November 2020, 41 (11) 1963; DOI: https://doi.org/10.3174/ajnr.P0076

Editorial

Head & Neck

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Imaging for Menière Disease
E. Kay-Rivest, D.R. Friedmann and J.T. Roland

American Journal of Neuroradiology November 2020, 41 (11) 1964-1965; DOI: https://doi.org/10.3174/ajnr.A6818

Review Articles

Head & Neck

Open Access
Cross-Sectional Imaging of Third Molar–Related Abnormalities
R.M. Loureiro, D.V. Sumi, H.L.V.C. Tames, S.P.P. Ribeiro, C.R. Soares, R.L.E. Gomes and M.M. Daniel

American Journal of Neuroradiology November 2020, 41 (11) 1966-1974; DOI: https://doi.org/10.3174/ajnr.A6747
Adult Brain

Open Access
The Perplexity Surrounding Chiari Malformations – Are We Any Wiser Now?
S.B. Hiremath, A. Fitsiori, J. Boto, C. Torres, N. Zakhari, J.-L. Dietemann, T.R. Meling and M.I. Vargas

American Journal of Neuroradiology November 2020, 41 (11) 1975-1981; DOI: https://doi.org/10.3174/ajnr.A6743
Adult Brain

Open Access
Neuro-Oncology and Radiogenomics: Time to Integrate?
A. Lasocki, M.A. Rosenthal, S.J. Roberts-Thomson, A. Neal and K.J. Drummond

American Journal of Neuroradiology November 2020, 41 (11) 1982-1988; DOI: https://doi.org/10.3174/ajnr.A6769

Patient Safety

Pediatrics

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Fetal Exposure to MR Imaging: Long-Term Neurodevelopmental Outcome
E. Zvi, A. Shemer, S. toussia-Cohen, D. Zvi, Y. Bashan, L. Hirschfeld-dicker, N. Oselka, M.-M. Amitai, O. Ezra, O. Bar-Yosef and E. Katorza

American Journal of Neuroradiology November 2020, 41 (11) 1989-1992; DOI: https://doi.org/10.3174/ajnr.A6771

Radiology-Pathology Correlation

Extracranial Vascular

Open Access
COVID-19-Associated Carotid Atherothrombosis and Stroke
C. Esenwa, N.T. Cheng, E. Lipsitz, K. Hsu, R. Zampolin, A. Gersten, D. Antoniello, A. Soetanto, K. Kirchoff, A. Liberman, P. Mabie, T. Nisar, D. Rahimian, A. Brook, S.-K. Lee, N. Haranhalli, D. Altschul and D. Labovitz

American Journal of Neuroradiology November 2020, 41 (11) 1993-1995; DOI: https://doi.org/10.3174/ajnr.A6752

Practice Perspectives

Functional

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Evolving Use of fMRI in Medicare Beneficiaries
S. Asnafi, R. Duszak, J.M. Hemingway, D.R. Hughes and J.W. Allen

American Journal of Neuroradiology November 2020, 41 (11) 1996-2000; DOI: https://doi.org/10.3174/ajnr.A6845

General Contents

Adult Brain

Open Access
Brain Imaging of Patients with COVID-19: Findings at an Academic Institution during the Height of the Outbreak in New York City
E. Lin, J.E. Lantos, S.B. Strauss, C.D. Phillips, T.R. Campion, B.B. Navi, N.S. Parikh, A.E. Merkler, S. Mir, C. Zhang, H. Kamel, M. Cusick, P. Goyal and A. Gupta

American Journal of Neuroradiology November 2020, 41 (11) 2001-2008; DOI: https://doi.org/10.3174/ajnr.A6793
Adult Brain

Open Access
A Double-Edged Sword: Neurologic Complications and Mortality in Extracorporeal Membrane Oxygenation Therapy for COVID-19–Related Severe Acute Respiratory Distress Syndrome at a Tertiary Care Center
J. Masur, C.W. Freeman and S. Mohan

American Journal of Neuroradiology November 2020, 41 (11) 2009-2011; DOI: https://doi.org/10.3174/ajnr.A6728
Interventional

Open Access
Stroke Thrombectomy in Patients with COVID-19: Initial Experience in 13 Cases
R. Pop, A. Hasiu, F. Bolognini, D. Mihoc, V. Quenardelle, R. Gheoca, E. Schluck, S. Courtois, M. Delaitre, M. Musacchio, J. Pottecher, T.-N. Chamaraux-Tran, F. Sellal, V. Wolff, P.A. Lebedinsky and R. Beaujeux

American Journal of Neuroradiology November 2020, 41 (11) 2012-2016; DOI: https://doi.org/10.3174/ajnr.A6750
Pediatrics

Open Access
Cytotoxic Lesion of the Corpus Callosum in an Adolescent with Multisystem Inflammatory Syndrome and SARS-CoV-2 Infection
J. Lin, E.C. Lawson, S. Verma, R.B. Peterson and R. Sidhu

American Journal of Neuroradiology November 2020, 41 (11) 2017-2019; DOI: https://doi.org/10.3174/ajnr.A6755
Adult Brain

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Location-Specific ASPECTS Paradigm in Acute Ischemic Stroke: A Systematic Review and Meta-Analysis
S.M. Seyedsaadat, A.A. Neuhaus, J.M. Pederson, W. Brinjikji, A.A. Rabinstein and D.F. Kallmes

American Journal of Neuroradiology November 2020, 41 (11) 2020-2026; DOI: https://doi.org/10.3174/ajnr.A6847
Adult Brain

Open Access
Maximum AmbiGuity Distance for Phase Imaging in Detection of Traumatic Cerebral Microbleeds: An Improvement over Current Imaging Practice
K. Nael, J.C. Dagher, M.E. Downs, M.S. Fine, E. Brokaw and D. Millward

American Journal of Neuroradiology November 2020, 41 (11) 2027-2033; DOI: https://doi.org/10.3174/ajnr.A6774
Adult Brain

Open Access
Dynamic CTA-Derived Perfusion Maps Predict Final Infarct Volume: The Simple Perfusion Reconstruction Algorithm
C.C. McDougall, L. Chan, S. Sachan, J. Guo, R.G. Sah, B.K. Menon, A.M. Demchuk, M.D. Hill, N.D. Forkert, C.D. d’Esterre and P.A. Barber

American Journal of Neuroradiology November 2020, 41 (11) 2034-2040; DOI: https://doi.org/10.3174/ajnr.A6783
Adult Brain

Open Access
Comparison of Dynamic Contrast-Enhancement Parameters between Gadobutrol and Gadoterate Meglumine in Posttreatment Glioma: A Prospective Intraindividual Study
J.E. Park, J.Y. Kim, H.S. Kim and W.H. Shim

American Journal of Neuroradiology November 2020, 41 (11) 2041-2048; DOI: https://doi.org/10.3174/ajnr.A6792
EDITOR'S CHOICEAdult Brain

Open Access
Centrally Reduced Diffusion Sign for Differentiation between Treatment-Related Lesions and Glioma Progression: A Validation Study
P. Alcaide-Leon, J. Cluceru, J.M. Lupo, T.J. Yu, T.L. Luks, T. Tihan, N.A. Bush and J.E. Villanueva-Meyer

American Journal of Neuroradiology November 2020, 41 (11) 2049-2054; DOI: https://doi.org/10.3174/ajnr.A6843

Images of 231 patients who underwent an operation for suspected glioma recurrence were reviewed. Patients with susceptibility artifacts or without central necrosis were excluded. The final diagnosis was established according to histopathology reports. Two neuroradiologists classified the diffusion patterns on preoperative MR imaging as the following: 1) reduced diffusion in the solid component only, 2) reduced diffusion mainly in the solid component, 3) no reduced diffusion, 4) reduced diffusion mainly in the central necrosis, and 5) reduced diffusion in the central necrosis only. A total of 103 patients were included (22 with treatment-related lesions and 81 with tumor progression). The diagnostic accuracy results for the centrally reduced diffusion pattern as a predictor of treatment-related lesions (“mainly central” and “exclusively central” patterns versus all other patterns) were: 64% sensitivity, 84% specificity, 52% positive predictive value, and 89% negative predictive value.
FELLOWS' JOURNAL CLUBAdult Brain

Open Access
Monro-Kellie Hypothesis: Increase of Ventricular CSF Volume after Surgical Closure of a Spinal Dural Leak in Patients with Spontaneous Intracranial Hypotension
T. Dobrocky, M. Rebsamen, C. Rummel, L. Häni, P. Mordasini, A. Raabe, C.T. Ulrich, J. Gralla, E.I. Piechowiak and J. Beck

American Journal of Neuroradiology November 2020, 41 (11) 2055-2061; DOI: https://doi.org/10.3174/ajnr.A6782

Nineteen patients with spontaneous intracranial hypotension with a proved spinal CSF leak were investigated between July 2014 and 2017. Brain MR imaging-based volumetry at baseline and after surgery was performed with FreeSurfer. In addition, the spontaneous intracranial hypotension score, ranging from 0 to 9, with 0 indicating very low and 9 very high probability of spinal CSF loss, was calculated. The authors conclude that the study demonstrated a significant increase in ventricular CSF volume in the early follow-up after surgical closure of the underlying spinal dural breach, and may provide a causal link between spinal CSF loss and spontaneous intracranial hypotension. The concomitant decrease in the spontaneous intracranial hypotension score postoperatively implies the restoration of an equilibrium within the CSF compartment.
Adult Brain

Open Access
Sensitive Detection of Infratentorial and Upper Cervical Cord Lesions in Multiple Sclerosis with Combined 3D FLAIR and T2-Weighted (FLAIR3) Imaging
R.E. Gabr, J.A. Lincoln, A. Kamali, O. Arevalo, X. Zhang, X. Sun, K.M. Hasan and P.A. Narayana

American Journal of Neuroradiology November 2020, 41 (11) 2062-2067; DOI: https://doi.org/10.3174/ajnr.A6797
Adult Brain

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MR Imaging Features of Middle Cranial Fossa Encephaloceles and Their Associations with Epilepsy
D.R. Pettersson, K.S. Hagen, N.C. Sathe, B.D. Clark and D.C. Spencer

American Journal of Neuroradiology November 2020, 41 (11) 2068-2074; DOI: https://doi.org/10.3174/ajnr.A6798
Adult Brain

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Tumefactive Primary Central Nervous System Vasculitis: Imaging Findings of a Rare and Underrecognized Neuroinflammatory Disease
S. Suthiphosuwan, A. Bharatha, C.C.-T. Hsu, A.W. Lin, J.A. Maloney, D.G. Munoz, C.A. Palmer and A.G. Osborn

American Journal of Neuroradiology November 2020, 41 (11) 2075-2081; DOI: https://doi.org/10.3174/ajnr.A6736
Adult Brain

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Detailed Arterial Anatomy and Its Anastomoses of the Sphenoid Ridge and Olfactory Groove Meningiomas with Special Reference to the Recurrent Branches from the Ophthalmic Artery
M. Hiramatsu, K. Sugiu, T. Hishikawa, J. Haruma, Y. Takahashi, S. Murai, K. Nishi, Y. Yamaoka, Y. Shimazu, K. Fujii, M. Kameda, K. Kurozumi and I. Date

American Journal of Neuroradiology November 2020, 41 (11) 2082-2087; DOI: https://doi.org/10.3174/ajnr.A6790
Interventional

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Carotid Stenting and Mechanical Thrombectomy in Patients with Acute Ischemic Stroke and Tandem Occlusions: Antithrombotic Treatment and Functional Outcome
V. Da Ros, J. Scaggiante, F. Sallustio, S. Lattanzi, M. Bandettini, A. Sgreccia, C. Rolla-Bigliani, E. Lafe, G. Sanfilippo, M. Diomedi, M. Ruggiero, N. Haznedari, M. Giannoni, C. Finocchi and R. Floris

American Journal of Neuroradiology November 2020, 41 (11) 2088-2093; DOI: https://doi.org/10.3174/ajnr.A6768
Interventional

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Use of Cangrelor in Cervical and Intracranial Stenting for the Treatment of Acute Ischemic Stroke: A “Real Life” Single-Center Experience
A. Cervo, F. Ferrari, G. Barchetti, L. Quilici, M. Piano, E. Boccardi and G. Pero

American Journal of Neuroradiology November 2020, 41 (11) 2094-2099; DOI: https://doi.org/10.3174/ajnr.A6785
Interventional

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Transarterial Treatment of Cranial Dural Arteriovenous Fistulas: The Role of Transarterial and Transvenous Balloon-Assisted Embolization
J.O. Zamponi, F.P. Trivelato, M.T.S. Rezende, R.K. Freitas, L.H. de Castro-Afonso, G.S. Nakiri, T.G. Abud, A.C. Ulhôa and D.G. Abud

American Journal of Neuroradiology November 2020, 41 (11) 2100-2106; DOI: https://doi.org/10.3174/ajnr.A6777
Interventional

Open Access
Computational Fluid Dynamics Using a Porous Media Setting Predicts Outcome after Flow-Diverter Treatment
M. Beppu, M. Tsuji, F. Ishida, M. Shirakawa, H. Suzuki and S. Yoshimura

American Journal of Neuroradiology November 2020, 41 (11) 2107-2113; DOI: https://doi.org/10.3174/ajnr.A6766
Interventional

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Efficacy of Asahi Fubuki as a Guiding Catheter for Mechanical Thrombectomy: An Institutional Case Series
L. Rinaldo, H. Cloft and W. Brinjikji

American Journal of Neuroradiology November 2020, 41 (11) 2114-2116; DOI: https://doi.org/10.3174/ajnr.A6748
EDITOR'S CHOICEHead & Neck

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Percutaneous CT-Guided Core Needle Biopsies of Head and Neck Masses: Technique, Histopathologic Yield, and Safety at a Single Academic Institution
T.J. Hillen, J.C. Baker, J.R. Long, M.V. Friedman and J.W. Jennings

American Journal of Neuroradiology November 2020, 41 (11) 2117-2122; DOI: https://doi.org/10.3174/ajnr.A6784

This is a retrospective review of head and neck biopsies performed from January 2013 through December 2019. Clinical diagnosis and indication, patient demographics, mass location and size, biopsy needle type, technical approach, dose-length product, sedation details, complications, diagnostic histopathologic yield, and the use of iodinated contrast were recorded for each case. Twenty-seven CT-guided head and neck core needle biopsies were performed in 26 patients. The diagnostic sample rate was 100% (27/27). A concordant histopathologic diagnosis was obtained in 93% (25/27) of cases. There was a single complication of core needle biopsy, a small asymptomatic superficial hematoma.
Commentary
- Head & Neck
  
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  Image-Guided Biopsies in the Head and Neck: Practical Value and Approach
  A.H. Aiken
  
  American Journal of Neuroradiology November 2020, 41 (11) 2123-2125; DOI: https://doi.org/10.3174/ajnr.A6855
Head & Neck

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Diagnostic Yield and Therapeutic Impact of Face and Neck Imaging in Patients Referred with Otalgia without Clinically Overt Disease
E. Ainsworth, I. Pai, M. Kathirgamanathan and S.E.J. Connor

American Journal of Neuroradiology November 2020, 41 (11) 2126-2131; DOI: https://doi.org/10.3174/ajnr.A6760
Head & Neck

Open Access
Diagnostic Value of Model-Based Iterative Reconstruction Combined with a Metal Artifact Reduction Algorithm during CT of the Oral Cavity
Y. Kubo, K. Ito, M. Sone, H. Nagasawa, Y. Onishi, N. Umakoshi, T. Hasegawa, T. Akimoto and M. Kusumoto

American Journal of Neuroradiology November 2020, 41 (11) 2132-2138; DOI: https://doi.org/10.3174/ajnr.A6767
Pediatrics

Open Access
Characterization of MR Imaging–Visible Perivascular Spaces in the White Matter of Healthy Adolescents at 3T
J. Piantino, E.L. Boespflug, D.L. Schwartz, M. Luther, A.M. Morales, A. Lin, R.V. Fossen, L. Silbert and B.J. Nagel

American Journal of Neuroradiology November 2020, 41 (11) 2139-2145; DOI: https://doi.org/10.3174/ajnr.A6789
EDITOR'S CHOICEPediatrics

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Prognostic Accuracy of Fetal MRI in Predicting Postnatal Neurodevelopmental Outcome
M. Wilson, K. Muir, D. Reddy, R. Webster, C. Kapoor and E. Miller

American Journal of Neuroradiology November 2020, 41 (11) 2146-2154; DOI: https://doi.org/10.3174/ajnr.A6770

The authors identified all fetal MR imaging performed at their institution during a 10-year period (n = 145) and assessed agreement between prenatal prognosis and postnatal outcome. Prenatal prognosis was determined by a pediatric neurologist who reviewed the fetal MR imaging report and categorized each pregnancy as having a favorable, indeterminate, or poor prognosis. Assessment of postnatal neurodevelopmental outcome was made solely on the basis of the child's Gross Motor Function Classification System score and whether the child developed epilepsy. Postnatal outcome was categorized as favorable, intermediate, or poor. There was 93.0% agreement between prenatal and postnatal imaging diagnoses. Prognosis was favorable in 44.2%, indeterminate in 50.0%, and poor in 5.8% of pregnancies. There was 93.5% agreement between a favorable prenatal prognosis and a favorable postnatal outcome.
PEDIATRICS

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Diffuse Leptomeningeal Glioneuronal Tumor of Childhood
D.A. Lakhani, K. Mankad, S. Chhabda, P. Feizi, R. Patel, A. Sarma and S. Pruthi

American Journal of Neuroradiology November 2020, 41 (11) 2155-2159; DOI: https://doi.org/10.3174/ajnr.A6737
FELLOWS' JOURNAL CLUBSpine

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Variability of T2-Relaxation Times of Healthy Lumbar Intervertebral Discs is More Homogeneous within an Individual Than across Healthy Individuals
A. Sharma, R.E. Walk, S.Y. Tang, R. Eldaya, P.J. Owen and D.L. Belavy

American Journal of Neuroradiology November 2020, 41 (11) 2160-2165; DOI: https://doi.org/10.3174/ajnr.A6791

Using prospectively acquired T2-relaxometry data from 606 intervertebral discs in 101 volunteers without back pain in a narrow age range (25–35 years), the authors calculated intra- and intersubject variation in T2 times of IVDs graded by 2 neuroradiologists on the Pfirrmann scale. Intrasubject variation of IVDs was assessed relative to other healthy IVDs (Pfirrmann grade, #2) in the same individual. Multiple intersubject variability measures were calculated using healthy extraneous references ranging from a single randomly selected IVD to all healthy extraneous IVDs, without and with segmental stratification. They conclude that the study demonstrates a significantly higher variation in the T2 times of IVDs across subjects, and suggests that normative measures based on the T2 times of healthy lumbar IVDs from the same individual are likely to provide the most discriminating means of identifying degenerated IVDs on the basis of T2 relaxometry.
FELLOWS' JOURNAL CLUBSpine

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Cauda Equina and Filum Terminale Arteriovenous Fistulas: Anatomic and Radiographic Features
K. Namba, Y. Niimi, T. Ishiguro, A. Higaki, N. Toma and M. Komiyama

American Journal of Neuroradiology November 2020, 41 (11) 2166-2170; DOI: https://doi.org/10.3174/ajnr.A6813

Intradural AVF below the conus medullaris may develop either on the filum terminale or the cauda equina (lumbosacral and coccygeal radicular nerves). Only 3 detailed cauda equina AVFs have been reported in the literature. The authors present the angiographic and MR imaging findings of cauda equina and filum terminale AVF cases, supplemented with literature research to characterize the radiologic features of the 2 entities. On angiography, filum terminale AVFs were invariably supplied by the extension of the anterior spinal artery accompanied by a closely paralleling filum terminale vein. Cauda equina AVFs were fed by either a radicular or a spinal artery or both arteries, often with a characteristic wavy radicular-perimedullary draining vein.

35 Years Ago in AJNR

35 Years Ago in AJNR

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Celebrating 35 Years of the AJNR
American Journal of Neuroradiology November 2020, 41 (11) 2171; DOI: https://doi.org/10.3174/ajnr.P0102

Online Features

Letters
- Open Access
  Chest CT Scanning in Suspected Stroke: Not Always Worth the Extra Mile
  M.D. Li, M. Lang, B.C. Yoon, B.P. Applewhite, K. Buch, S.P. Rincon, T.M. Leslie-Mazwi and W.A. Mehan
  
  American Journal of Neuroradiology November 2020, 41 (11) E86-E87; DOI: https://doi.org/10.3174/ajnr.A6763
- Open Access
  Reply:
  R.M. Kwee
  
  American Journal of Neuroradiology November 2020, 41 (11) E88; DOI: https://doi.org/10.3174/ajnr.A6787
- Open Access
  Hemorrhagic Neurologic Manifestations in COVID-19: An Isolated or Multifactorial Cause?
  P.S. Dhillon, A. Chattopadhyay, R.A. Dineen and R. Lenthall
  
  American Journal of Neuroradiology November 2020, 41 (11) E89-E90; DOI: https://doi.org/10.3174/ajnr.A6795
- Open Access
  Reply:
  P. Nicholson, L. Alshafai and T. Krings
  
  American Journal of Neuroradiology November 2020, 41 (11) E91; DOI: https://doi.org/10.3174/ajnr.A6827
- Open Access
  Risk of Acute Cerebrovascular Events in Patients with COVID-19 Infection
  M. Lang, M.D. Li, K. Buch, B.C. Yoon, B.P. Applewhite, T.M. Leslie-Mazwi, S. Rincon and W.A. Mehan
  
  American Journal of Neuroradiology November 2020, 41 (11) E92-E93; DOI: https://doi.org/10.3174/ajnr.A6796
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  Break Out the World’s Smallest Violin for an Overwhelmed Neuroradiologist
  D.R. Shatzkes
  
  American Journal of Neuroradiology November 2020, 41 (11) E94; DOI: https://doi.org/10.3174/ajnr.A6786

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American Journal of Neuroradiology

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35 Years Ago in AJNR

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