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Table of Contents

July 01, 2020; Volume 41,Issue 7

Perspectives

  • You have access
    Perspectives
    Manfred Hauben
    American Journal of Neuroradiology July 2020, 41 (7) 1135; DOI: https://doi.org/10.3174/ajnr.P0089

Review Articles

  • Interventional
    Open Access
    Preserving Access: A Review of Stroke Thrombectomy during the COVID-19 Pandemic
    T.M. Leslie-Mazwi, K.M. Fargen, M. Levitt, C.P. Derdeyn, S.K. Feske, A.B. Patel and J.A. Hirsch
    American Journal of Neuroradiology July 2020, 41 (7) 1136-1141; DOI: https://doi.org/10.3174/ajnr.A6606
  • Interventional
    Open Access
    Tandem Carotid Lesions in Acute Ischemic Stroke: Mechanisms, Therapeutic Challenges, and Future Directions
    A.Y. Poppe, G. Jacquin, D. Roy, C. Stapf and L. Derex
    American Journal of Neuroradiology July 2020, 41 (7) 1142-1148; DOI: https://doi.org/10.3174/ajnr.A6582
  • Adult Brain
    Open Access
    Headache and Neuroimaging: Why We Continue to Do It
    J.E. Jordan and A.E. Flanders
    American Journal of Neuroradiology July 2020, 41 (7) 1149-1155; DOI: https://doi.org/10.3174/ajnr.A6591

Radiology-Pathology Correlation

  • Head & Neck
    You have access
    Squamous Cell Carcinoma Arising from Sinonasal Inverted Papilloma
    D.T. Ginat, A. Trzcinska and P. Horowitz
    American Journal of Neuroradiology July 2020, 41 (7) 1156-1159; DOI: https://doi.org/10.3174/ajnr.A6583

Health Care Reform Vignette

  • Open Access
    Implications of the Revisions and Revaluation of Office/Outpatient Evaluation and Management Codes for Neuroradiology Reimbursement
    K.Y. Wang, J.A. Hirsch, G.N. Nicola, L.P. Golding, R.K. Lee and M.M. Chen
    American Journal of Neuroradiology July 2020, 41 (7) 1160-1164; DOI: https://doi.org/10.3174/ajnr.A6619

General Contents

  • Adult Brain
    Open Access
    CT Scanning in Suspected Stroke or Head Trauma: Is it Worth Going the Extra Mile and Including the Chest to Screen for COVID-19 Infection?
    R.M. Kwee, J. Krdzalic, B.A.C.M. Fasen, T.M.H. de Jaegere and for the COVID-19 CT Investigators South-East Netherlands (CISEN) Study Group
    American Journal of Neuroradiology July 2020, 41 (7) 1165-1169; DOI: https://doi.org/10.3174/ajnr.A6607
  • Adult Brain
    Open Access
    Cerebrovascular Disease in COVID-19
    Michael F. Goldberg, Morton F. Goldberg, R. Cerejo and A.H. Tayal
    American Journal of Neuroradiology July 2020, 41 (7) 1170-1172; DOI: https://doi.org/10.3174/ajnr.A6588
  • Adult Brain
    Open Access
    Hemorrhagic Posterior Reversible Encephalopathy Syndrome as a Manifestation of COVID-19 Infection
    A.M. Franceschi, O. Ahmed, L. Giliberto and M. Castillo
    American Journal of Neuroradiology July 2020, 41 (7) 1173-1176; DOI: https://doi.org/10.3174/ajnr.A6595
  • Adult Brain
    Open Access
    Surprise Diagnosis of COVID-19 following Neuroimaging Evaluation for Unrelated Reasons during the Pandemic in Hot Spots
    R. Jain, M. Young, S. Dogra, H. Kennedy, V. Nguyen and E. Raz
    American Journal of Neuroradiology July 2020, 41 (7) 1177-1178; DOI: https://doi.org/10.3174/ajnr.A6608
  • Adult Brain
    Open Access
    Brain Imaging Use and Findings in COVID-19: A Single Academic Center Experience in the Epicenter of Disease in the United States
    A. Radmanesh, E. Raz, E. Zan, A. Derman and M. Kaminetzky
    American Journal of Neuroradiology July 2020, 41 (7) 1179-1183; DOI: https://doi.org/10.3174/ajnr.A6610
  • Head & Neck
    Open Access
    COVID-19–Associated Miller Fisher Syndrome: MRI Findings
    J.E. Lantos, S.B. Strauss and E. Lin
    American Journal of Neuroradiology July 2020, 41 (7) 1184-1186; DOI: https://doi.org/10.3174/ajnr.A6609
  • Adult Brain
    You have access
    Ventricular Volume Is More Strongly Associated with Clinical Improvement Than the Evans Index after Shunting in Idiopathic Normal Pressure Hydrocephalus
    J. Neikter, S. Agerskov, P. Hellström, M. Tullberg, G. Starck, D. Ziegelitz and D. Farahmand
    American Journal of Neuroradiology July 2020, 41 (7) 1187-1192; DOI: https://doi.org/10.3174/ajnr.A6620
  • Adult Brain
    Open Access
    Distinguishing Extravascular from Intravascular Ferumoxytol Pools within the Brain: Proof of Concept in Patients with Treated Glioblastoma
    R.F. Barajas, D. Schwartz, H.L. McConnell, C.N. Kersch, X. Li, B.E. Hamilton, J. Starkey, D.R. Pettersson, J.P. Nickerson, J.M. Pollock, R.F. Fu, A. Horvath, L. Szidonya, C.G. Varallyay, J.J. Jaboin, A.M. Raslan, A. Dogan, J.S. Cetas, J. Ciporen, S.J. Han, P. Ambady, L.L. Muldoon, R. Woltjer, W.D. Rooney and E.A. Neuwelt
    American Journal of Neuroradiology July 2020, 41 (7) 1193-1200; DOI: https://doi.org/10.3174/ajnr.A6600
  • EDITOR'S CHOICEAdult Brain
    Open Access
    High Spatiotemporal Resolution 4D Flow MRI of Intracranial Aneurysms at 7T in 10 Minutes
    L.M. Gottwald, J. Töger, K. Markenroth Bloch, E.S. Peper, B.F. Coolen, G.J. Strijkers, P. van Ooij and A.J. Nederveen
    American Journal of Neuroradiology July 2020, 41 (7) 1201-1208; DOI: https://doi.org/10.3174/ajnr.A6603

    The authors used pseudospiral Cartesian undersampling with compressed sensing reconstruction to achieve high spatiotemporal resolution (0.5mm isotropic, ∼30 ms) in a scan time of 10 minutes. They analyzed the repeatability of accelerated 4D-flow scans and compared flow rates, stroke volume, and the pulsatility index with 2D-flow and conventional 4D-flow MR imaging in a flow phantom and 15 healthy subjects. Mean flow-rate bias compared with 2D-flow was lower for accelerated than for conventional 4D-flow MR imaging. Pulsatility index bias gave similar results. Stroke volume bias showed no difference from accelerated bias for conventional 4D-flow MR imaging. Repeatability for accelerated 4D-flow was similar to that of 2D-flow MR imaging. They conclude that highly accelerated high-spatiotemporal-resolution 4D-flow MR imaging at 7T in intracranial arteries and aneurysms provides repeatable and accurate quantitative flow values.

  • FELLOWS' JOURNAL CLUBExtracranial Vascular
    You have access
    Cervicofacial Venous Malformations Are Associated with Intracranial Developmental Venous Anomalies and Dural Venous Sinus Abnormalities
    W. Brinjikji, I.T. Mark, V.M. Silvera and J.B. Guerin
    American Journal of Neuroradiology July 2020, 41 (7) 1209-1214; DOI: https://doi.org/10.3174/ajnr.A6617

    Sixty-three consecutive patients who presented to the authors' institution with cervicofacial venous malformations and underwent postcontrast MR imaging were studied. Three neuroradiologists reviewed brain MRIs for the presence of developmental venous anomalies, dural venous sinus ectasia, and cavernous malformations. The prevalence of developmental venous anomalies in this patient population was compared with an age- and sex-matched control group without venous malformations. The overall presence of developmental venous anomalies in patients with venous malformations was 36.5% (23/63) compared with 7.9% (10/126) in controls. The prevalence of dural venous sinus ectasia was 9.5% (6/63) compared with 0% for controls. The authors show a significant association between cervicofacial venous malformations and cerebral developmental venous anomalies as well as between cervicofacial venous malformations and dural venous sinus abnormalities.

  • Commentary

    • You have access
      Heterogeneous Continuum of Cerebral and Cervicofacial Venous Malformations
      S. Manjila
      American Journal of Neuroradiology July 2020, 41 (7) 1215-1216; DOI: https://doi.org/10.3174/ajnr.A6694
  • Interventional
    Open Access
    A Hemodynamic Mechanism Correlating with the Initiation of MCA Bifurcation Aneurysms
    Z. Huang, M. Zeng, W.G. Tao, F.Y. Zeng, C.Q. Chen, L.B. Zhang and F.H. Chen
    American Journal of Neuroradiology July 2020, 41 (7) 1217-1224; DOI: https://doi.org/10.3174/ajnr.A6615
  • Interventional
    You have access
    Persistent Blood Flow inside the Woven EndoBridge Device More Than 6 Months after Intracranial Aneurysm Treatment: Frequency, Mechanisms, and Management—A Retrospective Single-Center Study
    H.A. Nguyen, S. Soize, P.-F. Manceau, L. Vudang and L. Pierot
    American Journal of Neuroradiology July 2020, 41 (7) 1225-1231; DOI: https://doi.org/10.3174/ajnr.A6593
  • Interventional
    You have access
    Residual Flow Inside the Woven EndoBridge Device at Follow-Up: Potential Predictors of the Bicêtre Occlusion Scale Score 1 Phenomenon
    M.T. Nawka, A. Lohse, M. Bester, J. Fiehler and J.-H. Buhk
    American Journal of Neuroradiology July 2020, 41 (7) 1232-1237; DOI: https://doi.org/10.3174/ajnr.A6605
  • FELLOWS' JOURNAL CLUBHead & Neck
    You have access
    Posttreatment Imaging in Patients with Head and Neck Cancer without Clinical Evidence of Recurrence: Should Surveillance Imaging Extend Beyond 6 Months?
    A. Gore, K. Baugnon, J. Beitler, N.F. Saba, M.R. Patel, X. Wu, B.J. Boyce and A.H. Aiken
    American Journal of Neuroradiology July 2020, 41 (7) 1238-1244; DOI: https://doi.org/10.3174/ajnr.A6614

    The authors performed a retrospective data base search that queried neck CT reports with Neck Imaging Reporting and Data Systems scores of 2–4 from June 2014 to March 2018. The electronic medical records were reviewed to determine outcomes of clinical and radiologic follow-up, including symptoms, physical examination findings, pathologic correlation, and clinical notes within 3 months of imaging. A total of 255 cases all with NIRADS scores of 2 or 3 met the inclusion criteria. Fifty-nine patients (23%) demonstrated recurrence, and 21 patients (36%) had clinically occult recurrence. The median overall time to radiologically detected, clinically occult recurrence was 11.4 months from treatment completion. They conclude that imaging surveillance beyond the first posttreatment baseline study was critical for detecting clinically occult recurrent disease in patients with head and neck squamous cell carcinoma. More than one-third of all recurrences were seen in patients without clinical evidence of disease.

  • Head & Neck
    You have access
    Comparison of Intraoperative Sonography and Histopathologic Evaluation of Tumor Thickness and Depth of Invasion in Oral Tongue Cancer: A Pilot Study
    B.C. Yoon, M.D. Bulbul, P.M. Sadow, W.C. Faquin, H.D. Curtin, M.A. Varvares and A.F. Juliano
    American Journal of Neuroradiology July 2020, 41 (7) 1245-1250; DOI: https://doi.org/10.3174/ajnr.A6625
  • Head & Neck
    You have access
    Prevalence of Sigmoid Sinus Dehiscence and Diverticulum among Adults with Skull Base Cephaloceles
    H. Sotoudeh, G. Elsayed, S. Ghandili, O. Shafaat, J.D. Bernstock, G. Chagoya, T. Atchley, P. Talati, D. Segar, S. Gupta and A. Singhal
    American Journal of Neuroradiology July 2020, 41 (7) 1251-1255; DOI: https://doi.org/10.3174/ajnr.A6602
  • Pediatrics
    Open Access
    Variable Refocusing Flip Angle Single-Shot Imaging for Sedation-Free Fast Brain MRI
    R. Jabarkheel, E. Tong, E.H. Lee, T.M. Cullen, U. Yousaf, A.M. Loening, V. Taviani, Michael Iv, G.A. Grant, S.J. Holdsworth, S.S. Vasanawala and K.W. Yeom
    American Journal of Neuroradiology July 2020, 41 (7) 1256-1262; DOI: https://doi.org/10.3174/ajnr.A6616
  • Pediatrics
    Open Access
    Prevalence and Incidence of Microhemorrhages in Adolescent Football Players
    B.R. Shah, J.M. Holcomb, E.M. Davenport, C.M. Lack, J.M. McDaniel, D.M. Imphean, Y. Xi, D.A. Rosenbaum, J.E. Urban, B.C. Wagner, A.K. Powers, C.T. Whitlow, J.D. Stitzel and J.A. Maldjian
    American Journal of Neuroradiology July 2020, 41 (7) 1263-1268; DOI: https://doi.org/10.3174/ajnr.A6618
  • Commentary

    • You have access
      Value of Advanced MR Imaging Techniques in Mild Traumatic Brain Injury
      S. Hähnel
      American Journal of Neuroradiology July 2020, 41 (7) 1269-1270; DOI: https://doi.org/10.3174/ajnr.A6629
  • Pediatrics
    You have access
    In Vivo Evaluation of White Matter Abnormalities in Children with Duchenne Muscular Dystrophy Using DTI
    V. Preethish-Kumar, A. Shah, M. Kumar, M. Ingalhalikar, K. Polavarapu, M. Afsar, J. Rajeswaran, S. Vengalil, S. Nashi, P.T. Thomas, A. Sadasivan, M. Warrier, A. Nalini and J. Saini
    American Journal of Neuroradiology July 2020, 41 (7) 1271-1278; DOI: https://doi.org/10.3174/ajnr.A6604
  • EDITOR'S CHOICEPediatrics
    Open Access
    Automatic Machine Learning to Differentiate Pediatric Posterior Fossa Tumors on Routine MR Imaging
    H. Zhou, R. Hu, O. Tang, C. Hu, L. Tang, K. Chang, Q. Shen, J. Wu, B. Zou, B. Xiao, J. Boxerman, W. Chen, R.Y. Huang, L. Yang, H.X. Bai and C. Zhu
    American Journal of Neuroradiology July 2020, 41 (7) 1279-1285; DOI: https://doi.org/10.3174/ajnr.A6621

    This retrospective study included preoperative MR imaging of 288 pediatric patients with pediatric posterior fossa tumors, including medulloblastoma (n=111), ependymoma (n=70), and pilocytic astrocytoma (n=107). Radiomics features were extracted from T2-weighted images, contrast-enhanced T1-weighted images, and ADC maps. Models generated by standard manual optimization by a machine learning expert were compared with automatic machine learning via the Tree-Based Pipeline Optimization Tool for performance evaluation. The authors conclude that automatic machine learning based on routine MR imaging classified pediatric posterior fossa tumors with high accuracy compared with manual expert pipeline optimization and qualitative expert MR imaging review.

  • EDITOR'S CHOICEPediatrics
    You have access
    Intra-Arterial Chemotherapy for Retinoblastoma in Infants ≤10 kg: 74 Treated Eyes with 222 IAC Sessions
    A. Sweid, B. Hammoud, J.H. Weinberg, P. Texakalidis, V. Xu, K. Shivashankar, M.P. Baldassari, S. Das, S. Ramesh, S. Tjoumakaris, C.L. Shields, D. Ancona-Lezama, L.-A.S. Lim, L.A. Dalvin and P. Jabbour
    American Journal of Neuroradiology July 2020, 41 (7) 1286-1292; DOI: https://doi.org/10.3174/ajnr.A6590

    Intra-arterial chemotherapy (IAC) for retinoblastoma (Rb) has dramatically altered the natural history of the disease. Cure rates, globe salvage, and vision preservation have dramatically increased. This retrospective chart review evaluated 207 Rb tumors of 207 eyes in 196 consecutive patients who underwent 658 IAC infusions overall. Patient weights were ≤10 kg in 69 (35.2%) and >10 kg in 127 (64.8%) patients. Comparison (≤10 kg versus >10 kg) revealed that the total number of IAC infusions was 222 versus 436. Periprocedural complications were not significantly different. The authors conclude that intra-arterial chemotherapy in patients weighing ≤10 kg is a safe and effective treatment.

  • Pediatrics
    Open Access
    Changes of Neurotransmitters in Youth with Internet and Smartphone Addiction: A Comparison with Healthy Controls and Changes after Cognitive Behavioral Therapy
    H.S. Seo, E.-K. Jeong, S. Choi, Y. Kwon, H.-J. Park and I. Kim
    American Journal of Neuroradiology July 2020, 41 (7) 1293-1301; DOI: https://doi.org/10.3174/ajnr.A6632
  • Pediatrics
    Open Access
    Brain Cortical Structure and Executive Function in Children May Be Influenced by Parental Choices of Infant Diets
    T. Li, T.M. Badger, B.J. Bellando, S.T. Sorensen, X. Lou and X. Ou
    American Journal of Neuroradiology July 2020, 41 (7) 1302-1308; DOI: https://doi.org/10.3174/ajnr.A6601
  • FELLOWS' JOURNAL CLUBSpine
    You have access
    Spine MRI in Spontaneous Intracranial Hypotension for CSF Leak Detection: Nonsuperiority of Intrathecal Gadolinium to Heavily T2-Weighted Fat-Saturated Sequences
    T. Dobrocky, A. Winklehner, P.S. Breiding, L. Grunder, G. Peschi, L. Häni, P.J. Mosimann, M. Branca, J. Kaesmacher, P. Mordasini, A. Raabe, C.T. Ulrich, J. Beck, J. Gralla and E.I. Piechowiak
    American Journal of Neuroradiology July 2020, 41 (7) 1309-1315; DOI: https://doi.org/10.3174/ajnr.A6592

    The authors performed a retrospective study of patients with spontaneous intracranial hypotension examined from February 2013 to October 2017. The spine MR imaging was reviewed by 3 blinded readers for the presence of epidural CSF using 3 different sequences (T2WI, 3D T2WI fat-saturated, T1WI gadolinium). In patients with leaks, the presumed level of the leak was reported. They conclude that intrathecal gadolinium-enhanced spine MR imaging does not improve the diagnostic accuracy for the detection of epidural CSF. Gadolinium myelography lacks a rationale to be included in the routine spontaneous intracranial hypotension work-up. Heavily T2-weighted images with fat saturation provide high accuracy for the detection of an epidural CSF collection.

  • Spine
    You have access
    Combination of Imaging Features and Clinical Biomarkers Predicts Positive Pathology and Microbiology Findings Suggestive of Spondylodiscitis in Patients Undergoing Image-Guided Percutaneous Biopsy
    S. Kihira, C. Koo, K. Mahmoudi, T. Leong, X. Mei, B. Rigney, A. Aggarwal and A.H. Doshi
    American Journal of Neuroradiology July 2020, 41 (7) 1316-1322; DOI: https://doi.org/10.3174/ajnr.A6623

Memorials

  • You have access
    Norman Leeds, MD
    Robert D. Zimmerman
    American Journal of Neuroradiology July 2020, 41 (7) 1323-1324; DOI: https://doi.org/10.3174/ajnr.A6612
  • You have access
    James T. Goodrich, MD, PhD
    Jacqueline A. Bello and Adam E. Goldman-Yassen
    American Journal of Neuroradiology July 2020, 41 (7) 1325; DOI: https://doi.org/10.3174/ajnr.A6628

35 Years Ago in AJNR

  • You have access
    Celebrating 35 Years of the AJNR
    American Journal of Neuroradiology July 2020, 41 (7) 1326; DOI: https://doi.org/10.3174/ajnr.P0100

Online Features

  • Letters

    • LETTER
      Open Access
      Novel Coronavirus: What Neuroradiologists Should Do
      C. Jain, V. Bhatia and A. Kumar
      American Journal of Neuroradiology July 2020, 41 (7) E49; DOI: https://doi.org/10.3174/ajnr.A6550
    • LETTER
      Open Access
      Neuroradiologists and the Novel Coronavirus
      M.U. Antonucci, J.M. Reagan and M. Yazdani
      American Journal of Neuroradiology July 2020, 41 (7) E50; DOI: https://doi.org/10.3174/ajnr.A6596
    • LETTER
      You have access
      Meta-Analysis as a Symptom: The Example of Flow Diverters
      E. Houdart
      American Journal of Neuroradiology July 2020, 41 (7) E51; DOI: https://doi.org/10.3174/ajnr.A6594
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American Journal of Neuroradiology: 41 (7)
American Journal of Neuroradiology
Vol. 41, Issue 7
1 Jul 2020
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