Advertisement

Welcome to the new AJNR, Updated Hall of Fame, and more. Read the full announcements.

AJNR is seeking candidates for the position of Associate Section Editor, AJNR Case Collection. Read the full announcement.

 

Index by author

March 01, 2020; Volume 41,Issue 3

  1. Yanez, P.

    1. FELLOWS' JOURNAL CLUBAdult Brain
      SWAN-Venule: An Optimized MRI Technique to Detect the Central Vein Sign in MS Plaques
      M.I. Gaitán, P. Yañez, M.E. Paday Formenti, I. Calandri, E. Figueiredo, P. Sati and J. Correale
      American Journal of Neuroradiology March 2020, 41 (3) 456-460; DOI: https://doi.org/10.3174/ajnr.A6437

      Multiple sclerosis lesions develop around small veins that are radiologically described as the so-called central vein sign. With 7T MR imaging and magnetic susceptibility-based sequences, the central vein sign has been observed in 80%–100% of MS lesions in patients' brains. However, a lower proportion ∼50% has been reported at 3T using SWAN. The authors' aim was to assess a modified version of SWAN optimized at 3T for sensitive detection of the central vein sign. Thirty subjects with MS were scanned on a 3T clinical MR imaging system. 3D T2-weighted FLAIR and optimized 3D SWAN, called SWAN-venule, were acquired after injection of a gadolinium-based contrast agent. Overall, the central vein sign was detected in 86% of the white matter lesions (periventricular, 89%; deep white matter, 95%; and juxtacortical, 78%). The SWAN-venule technique is an optimized MR imaging sequence for highly sensitive detection of the central vein sign in MS brain lesions.

  2. Yang, P.F.

    1. Interventional
      Open Access
      Comparison of Aspiration versus Stent Retriever Thrombectomy as the Preferred Strategy for Patients with Acute Terminal Internal Carotid Artery Occlusion: A Propensity Score Matching Analysis
      P.F. Xing, P.F. Yang, Z.F. Li, L. Zhang, H.J. Shen, Y.X. Zhang, Y.W. Zhang and J.M. Liu
      American Journal of Neuroradiology March 2020, 41 (3) 469-476; DOI: https://doi.org/10.3174/ajnr.A6414

  3. Yip, K.W.N.

    1. EDITOR'S CHOICEHead & Neck
      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.

Back to top

In this issue

Advertisement
Advertisement