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Index by author

June 01, 2019; Volume 40,Issue 6

  1. Pandya, S.

    1. Adult Brain
      Open Access
      Quantitative Susceptibility Mapping of Time-Dependent Susceptibility Changes in Multiple Sclerosis Lesions
      S. Zhang, T.D. Nguyen, S.M. Hurtado Rúa, U.W. Kaunzner, S. Pandya, I. Kovanlikaya, P. Spincemaille, Y. Wang and S.A. Gauthier
      American Journal of Neuroradiology June 2019, 40 (6) 987-993; DOI: https://doi.org/10.3174/ajnr.A6071

  2. Park, J.J.

    1. EDITOR'S CHOICEAdult Brain
      Open Access
      A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study
      H.G. Roh, E.Y. Kim, I.S. Kim, H.J. Lee, J.J. Park, S.B. Lee, J.W. Choi, Y.S. Jeon, M. Park, S.U. Kim and H.J. Kim
      American Journal of Neuroradiology June 2019, 40 (6) 946-953; DOI: https://doi.org/10.3174/ajnr.A6068

      The purpose of this study was to introduce a multiphase MRA collateral map derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. The authors generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP in 67 patients using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. The interobserver reliabilities forcollateral grading using multiphase MRA or MRP collateral maps were excellent. They conclude that the dynamic signals of dynamic contrast-enhanced MRA can generate multiphasecollateral images and show the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.

  3. Park, M.

    1. EDITOR'S CHOICEAdult Brain
      Open Access
      A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study
      H.G. Roh, E.Y. Kim, I.S. Kim, H.J. Lee, J.J. Park, S.B. Lee, J.W. Choi, Y.S. Jeon, M. Park, S.U. Kim and H.J. Kim
      American Journal of Neuroradiology June 2019, 40 (6) 946-953; DOI: https://doi.org/10.3174/ajnr.A6068

      The purpose of this study was to introduce a multiphase MRA collateral map derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. The authors generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP in 67 patients using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. The interobserver reliabilities forcollateral grading using multiphase MRA or MRP collateral maps were excellent. They conclude that the dynamic signals of dynamic contrast-enhanced MRA can generate multiphasecollateral images and show the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.

  4. Parsons, M.S.

    1. Head & Neck
      Evaluating the Utility of a Postprocessing Algorithm for MRI Evaluation of Optic Neuritis
      L. Stunkel, A. Sharma, M.S. Parsons, A. Salter and G.P. Van Stavern
      American Journal of Neuroradiology June 2019, 40 (6) 1043-1048; DOI: https://doi.org/10.3174/ajnr.A6057

  5. Patel, D.

    1. Pediatrics
      Radiation Dose and Image Quality in Pediatric Neck CT
      S.V. Tipnis, W.J. Rieter, D. Patel, S.T. Stalcup, M.G. Matheus and M.V. Spampinato
      American Journal of Neuroradiology June 2019, 40 (6) 1067-1073; DOI: https://doi.org/10.3174/ajnr.A6073

  6. Patel, S.H.

    1. Head & Neck
      Dynamic Contrast-Enhanced MRI to Differentiate Parotid Neoplasms Using Golden-Angle Radial Sparse Parallel Imaging
      J.L. Mogen, K.T. Block, N.K. Bansal, J.T. Patrie, S. Mukherjee, E. Zan, M. Hagiwara, G.M. Fatterpekar and S.H. Patel
      American Journal of Neuroradiology June 2019, 40 (6) 1029-1036; DOI: https://doi.org/10.3174/ajnr.A6055

  7. Patrie, J.T.

    1. Head & Neck
      Dynamic Contrast-Enhanced MRI to Differentiate Parotid Neoplasms Using Golden-Angle Radial Sparse Parallel Imaging
      J.L. Mogen, K.T. Block, N.K. Bansal, J.T. Patrie, S. Mukherjee, E. Zan, M. Hagiwara, G.M. Fatterpekar and S.H. Patel
      American Journal of Neuroradiology June 2019, 40 (6) 1029-1036; DOI: https://doi.org/10.3174/ajnr.A6055

  8. Piveteau, A.

    1. Adult Brain
      The Occipital Emissary Vein: A Possible Marker for Pseudotumor Cerebri
      A. Hedjoudje, A. Piveteau, C. Gonzalez-Campo, A. Moghekar, P. Gailloud and D. San Millán
      American Journal of Neuroradiology June 2019, 40 (6) 973-978; DOI: https://doi.org/10.3174/ajnr.A6061

  9. Plaikner, M.

    1. FELLOWS' JOURNAL CLUBHead & Neck
      Readout-Segmented Echo-Planar DWI for the Detection of Cholesteatomas: Correlation with Surgical Validation
      N. Fischer, V.H. Schartinger, D. Dejaco, J. Schmutzhard, H. Riechelmann, M. Plaikner and B. Henninger
      American Journal of Neuroradiology June 2019, 40 (6) 1055-1059; DOI: https://doi.org/10.3174/ajnr.A6079

      Readout-segmented echo-planar (RESOLVE)-DWI is a new alternative technique for obtaining DWI with high quality, delivering sharp images at high spatial resolution and reduced slice thickness. Fifty patients with chronic otitis media who underwent MR imaging before an operation of the middle ear were included. The MR imaging protocol consisted of axial and coronal readout-segmented echo-planar DWI with b-values of 0 and 1000 s/mm2 and 3-mm slice thickness. The readout segmented echo-planar diffusion-weighted images were fused with standard T2-weighted sequences for better anatomic assignment. Readout-segmented echo-planar DWI detected 22 of the 25 cases of surgically proved cholesteatoma. It has an accuracy of 92%, a sensitivity of 88%, a specificity of 96%, a positive predictive value of 96%, and a negativepredictive value of 89%. Readout-segmented echo-planar DWI is a promising and reliable MR imaging sequence for the detection and exclusion of cholesteatoma.

  10. Pope, W.B.

    1. Adult Brain
      Open Access
      Association between Tumor Acidity and Hypervascularity in Human Gliomas Using pH-Weighted Amine Chemical Exchange Saturation Transfer Echo-Planar Imaging and Dynamic Susceptibility Contrast Perfusion MRI at 3T
      Y.-L. Wang, J. Yao, A. Chakhoyan, C. Raymond, N. Salamon, L.M. Liau, P.L. Nghiemphu, A. Lai, W.B. Pope, N. Nguyen, M. Ji, T.F. Cloughesy and B.M. Ellingson
      American Journal of Neuroradiology June 2019, 40 (6) 979-986; DOI: https://doi.org/10.3174/ajnr.A6063
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