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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates


Improved Turnaround Times | Median time to first decision: 12 days

Index by author

March 01, 2020; Volume 41,Issue 3
  • A
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  • D
  • E
  • F
  • G
  • H
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  • K
  • L
  • M
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  • X
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  • Z

  1. Lam, W.K.J.

    1. EDITOR'S CHOICEHead and Neck Imaging
      Open Access
      Early Detection of Cancer: Evaluation of MR Imaging Grading Systems in Patients with Suspected Nasopharyngeal Carcinoma
      A.D. King, J.K.S. Woo, Q.-Y. Ai, F.K.F. Mo, T.Y. So, W.K.J. Lam, I.O.L. Tse, A.C. Vlantis, K.W.N. Yip, E.P. Hui, B.B.Y. Ma, R.W.K. Chiu, A.T.C. Chan, Y.M.D. Lo and K.C.A. Chan
      American Journal of Neuroradiology March 2020, 41 (3) 515-521; DOI: https://doi.org/10.3174/ajnr.A6444

      Dedicated nasopharyngeal MR imaging before (plain scan system) and after intravenous contrast administration (current and modified systems) was reviewed in patients from a nasopharyngeal carcinoma-endemic region, comprising 383 patients with suspected disease without nasopharyngeal carcinoma and 383 patients with nasopharyngeal carcinoma. The modified and plain scan systems refined primary tumor criteria, added a nodal assessment, and expanded the system from 4 to 5 grades. The current, modified, and plain scan MR imaging systems yielded sensitivities of 99.74%, 97.91%, and 97.65%, respectively, and specificities of 63.45%, 89.56%, and 86.42%, respectively. The modified system yielded significantly better performance than the current and plain systems. In conclusion, the authors propose a modified MR imaging grading system that improves diagnostic performance for nasopharyngeal carcinoma detection. Contrast was not valuable for low MR imaging grades, and the plain scan shows potential for use in screening programs.

  2. Larsson, E.-M.

    1. Adult Brain
      You have access
      High Intravascular Signal Arterial Transit Time Artifacts Have Negligible Effects on Cerebral Blood Flow and Cerebrovascular Reserve Capacity Measurement Using Single Postlabel Delay Arterial Spin-Labeling in Patients with Moyamoya Disease
      M. Fahlström, A. Lewén, P. Enblad, E.-M. Larsson and J. Wikström
      American Journal of Neuroradiology March 2020, 41 (3) 430-436; DOI: https://doi.org/10.3174/ajnr.A6411
  3. Leclerc, X.

    1. Adult Brain
      You have access
      Follow-Up MRI for Small Brain AVMs Treated by Radiosurgery: Is Gadolinium Really Necessary?
      X. Leclerc, O. Guillaud, N. Reyns, J. Hodel, O. Outteryck, F. Bala, N. Bricout, M. Bretzner, N. Ramdane, J.-P. Pruvo, L. Hacein-Bey and G. Kuchcinski
      American Journal of Neuroradiology March 2020, 41 (3) 437-445; DOI: https://doi.org/10.3174/ajnr.A6404
  4. Lee, A.

    1. Patient Safety
      You have access
      Reduction of Radiation Dose and Scanning Time While Preserving Diagnostic Yield: A Comparison of Battery-Powered and Manual Bone Biopsy Systems
      S. Kihira, C. Koo, A. Lee, A. Aggarwal, P. Pawha and A. Doshi
      American Journal of Neuroradiology March 2020, 41 (3) 387-392; DOI: https://doi.org/10.3174/ajnr.A6428
  5. Lee, L.

    1. Adult Brain
      You have access
      Reduced Global Efficiency and Random Network Features in Patients with Relapsing-Remitting Multiple Sclerosis with Cognitive Impairment
      R. Hawkins, A.S. Shatil, L. Lee, A. Sengupta, L. Zhang, S. Morrow and R.I. Aviv
      American Journal of Neuroradiology March 2020, 41 (3) 449-455; DOI: https://doi.org/10.3174/ajnr.A6435
  6. Leiner, T.

    1. Extracranial Vascular
      You have access
      Gadolinium Enhancement of the Aneurysm Wall in Extracranial Carotid Artery Aneurysms
      C.J.H.C.M. van Laarhoven, M.L. Rots, V.E.C. Pourier, N.K.N. Jorritsma, T. Leiner, J. Hendrikse, M.D.I. Vergouwen and G.J. de Borst
      American Journal of Neuroradiology March 2020, 41 (3) 501-507; DOI: https://doi.org/10.3174/ajnr.A6442
  7. Leon, G.D.

    1. EDITOR'S CHOICEAdult Brain
      Open Access
      Performance of Standardized Relative CBV for Quantifying Regional Histologic Tumor Burden in Recurrent High-Grade Glioma: Comparison against Normalized Relative CBV Using Image-Localized Stereotactic Biopsies
      J.M. Hoxworth, J.M. Eschbacher, A.C. Gonzales, K.W. Singleton, G.D. Leon, K.A. Smith, A.M. Stokes, Y. Zhou, G.L. Mazza, A.B. Porter, M.M. Mrugala, R.S. Zimmerman, B.R. Bendok, D.P. Patra, C. Krishna, J.L. Boxerman, L.C. Baxter, K.R. Swanson, C.C. Quarles, K.M. Schmainda and L.S. Hu
      American Journal of Neuroradiology March 2020, 41 (3) 408-415; DOI: https://doi.org/10.3174/ajnr.A6486

      This study compares the predictive performance of relative CBV standardization against relative CBV normalization for quantifying recurrent tumor burden in high-grade gliomas relative to posttreatment radiation effects. The authors recruited 38 previously treated patients with high-grade gliomas (World Health Organization grades III or IV) undergoing surgical re-resection for recurrent tumor versus posttreatment radiation effects. They recovered 112 image-localized biopsies and quantified the percentage of histologic tumor content versus posttreatment radiation effects for each sample. They measured spatially matched normalized and standardized relative CBV metrics (mean, median) and fractional tumor burden for each biopsy. Across relative CBV metrics, fractional tumor burden showed the highest correlations with tumor content (0%–100%) for normalized and standardized values. With binary cutoffs, predictive accuracies were similar for both standardized and normalized metrics and across relative CBV metrics. Standardization of relative CBV achieves similar equivalent performance compared with normalized relative CBV and offers an important step toward workflow optimization and consensus methodology.

  8. Lerner, D.J.

    1. Spine Imaging and Spine Image-Guided Interventions
      You have access
      Lumbar Puncture: Creation and Resident Acceptance of a Low-Cost, Durable, Reusable Fluoroscopic Phantom with a Fluid-Filled Spinal Canal for Training at an Academic Program
      D.J. Lerner, S.E. Gifford, N. Olafsen, A. Mileto and E. Soloff
      American Journal of Neuroradiology March 2020, 41 (3) 548-550; DOI: https://doi.org/10.3174/ajnr.A6439
  9. Lewen, A.

    1. Adult Brain
      You have access
      High Intravascular Signal Arterial Transit Time Artifacts Have Negligible Effects on Cerebral Blood Flow and Cerebrovascular Reserve Capacity Measurement Using Single Postlabel Delay Arterial Spin-Labeling in Patients with Moyamoya Disease
      M. Fahlström, A. Lewén, P. Enblad, E.-M. Larsson and J. Wikström
      American Journal of Neuroradiology March 2020, 41 (3) 430-436; DOI: https://doi.org/10.3174/ajnr.A6411
  10. Li, X.L.

    1. Adult Brain
      Open Access
      Artificial Intelligence in the Management of Intracranial Aneurysms: Current Status and Future Perspectives
      Z. Shi, B. Hu, U.J. Schoepf, R.H. Savage, D.M. Dargis, C.W. Pan, X.L. Li, Q.Q. Ni, G.M. Lu and L.J. Zhang
      American Journal of Neuroradiology March 2020, 41 (3) 373-379; DOI: https://doi.org/10.3174/ajnr.A6468
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American Journal of Neuroradiology: 41 (3)
American Journal of Neuroradiology
Vol. 41, Issue 3
1 Mar 2020
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