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Index by author

February 01, 2017; Volume 38,Issue 2

  1. Hagiwara, A.

    1. FELLOWS' JOURNAL CLUBADULT BRAIN
      Open Access
      Synthetic MRI in the Detection of Multiple Sclerosis Plaques
      A. Hagiwara, M. Hori, K. Yokoyama, M.Y. Takemura, C. Andica, T. Tabata, K. Kamagata, M. Suzuki, K.K. Kumamaru, M. Nakazawa, N. Takano, H. Kawasaki, N. Hamasaki, A. Kunimatsu and S. Aoki
      American Journal of Neuroradiology February 2017, 38 (2) 257-263; DOI: https://doi.org/10.3174/ajnr.A5012

      In this retrospective study, synthetic T2-weighted, FLAIR, double inversion recovery, and phase-sensitive inversion recovery images were produced in 12 patients with MS after quantification of T1 and T2 values and proton density. Double inversion recovery images were optimized for each patient by adjusting the TI. The number of visible plaques was determined by a radiologist for a set of these 4 types of synthetic MR images and a set of conventional T1-weighted inversion recovery, T2-weighted, and FLAIR images. Conventional 3D double inversion recovery and other available images were used as the criterion standard. Synthetic MR imaging enabled detection of more MS plaques than conventional MR imaging in a comparable acquisition time (approximately 7 minutes). The contrast for MS plaques on synthetic double inversion recovery images was better than on conventional double inversion recovery images.

    2. ADULT BRAIN
      Open Access
      Utility of a Multiparametric Quantitative MRI Model That Assesses Myelin and Edema for Evaluating Plaques, Periplaque White Matter, and Normal-Appearing White Matter in Patients with Multiple Sclerosis: A Feasibility Study
      A. Hagiwara, M. Hori, K. Yokoyama, M.Y. Takemura, C. Andica, K.K. Kumamaru, M. Nakazawa, N. Takano, H. Kawasaki, S. Sato, N. Hamasaki, A. Kunimatsu and S. Aoki
      American Journal of Neuroradiology February 2017, 38 (2) 237-242; DOI: https://doi.org/10.3174/ajnr.A4977

  2. Halenda, K.M.

    1. Neurointervention
      Even Small Decreases in Blood Pressure during Conscious Sedation Affect Clinical Outcome after Stroke Thrombectomy: An Analysis of Hemodynamic Thresholds
      M.K. Whalin, K.M. Halenda, D.C. Haussen, L.C. Rebello, M.R. Frankel, R.Y. Gershon and R.G. Nogueira
      American Journal of Neuroradiology February 2017, 38 (2) 294-298; DOI: https://doi.org/10.3174/ajnr.A4992

  3. Halm, K.

    1. Efficacy of Double-Blind Peer Review in an Imaging Subspecialty Journal
      E.E. O'Connor, M. Cousar, J.A. Lentini, M. Castillo, K. Halm and T.A. Zeffiro
      American Journal of Neuroradiology February 2017, 38 (2) 230-235; DOI: https://doi.org/10.3174/ajnr.A5017

  4. Hamasaki, N.

    1. FELLOWS' JOURNAL CLUBADULT BRAIN
      Open Access
      Synthetic MRI in the Detection of Multiple Sclerosis Plaques
      A. Hagiwara, M. Hori, K. Yokoyama, M.Y. Takemura, C. Andica, T. Tabata, K. Kamagata, M. Suzuki, K.K. Kumamaru, M. Nakazawa, N. Takano, H. Kawasaki, N. Hamasaki, A. Kunimatsu and S. Aoki
      American Journal of Neuroradiology February 2017, 38 (2) 257-263; DOI: https://doi.org/10.3174/ajnr.A5012

      In this retrospective study, synthetic T2-weighted, FLAIR, double inversion recovery, and phase-sensitive inversion recovery images were produced in 12 patients with MS after quantification of T1 and T2 values and proton density. Double inversion recovery images were optimized for each patient by adjusting the TI. The number of visible plaques was determined by a radiologist for a set of these 4 types of synthetic MR images and a set of conventional T1-weighted inversion recovery, T2-weighted, and FLAIR images. Conventional 3D double inversion recovery and other available images were used as the criterion standard. Synthetic MR imaging enabled detection of more MS plaques than conventional MR imaging in a comparable acquisition time (approximately 7 minutes). The contrast for MS plaques on synthetic double inversion recovery images was better than on conventional double inversion recovery images.

    2. ADULT BRAIN
      Open Access
      Utility of a Multiparametric Quantitative MRI Model That Assesses Myelin and Edema for Evaluating Plaques, Periplaque White Matter, and Normal-Appearing White Matter in Patients with Multiple Sclerosis: A Feasibility Study
      A. Hagiwara, M. Hori, K. Yokoyama, M.Y. Takemura, C. Andica, K.K. Kumamaru, M. Nakazawa, N. Takano, H. Kawasaki, S. Sato, N. Hamasaki, A. Kunimatsu and S. Aoki
      American Journal of Neuroradiology February 2017, 38 (2) 237-242; DOI: https://doi.org/10.3174/ajnr.A4977

  5. Han, H.Y.

    1. Head and Neck Imaging
      First-Line Use of Core Needle Biopsy for High-Yield Preliminary Diagnosis of Thyroid Nodules
      H.C. Kim, Y.J. Kim, H.Y. Han, J.M. Yi, J.H. Baek, S.Y. Park, J.Y. Seo and K.W. Kim
      American Journal of Neuroradiology February 2017, 38 (2) 357-363; DOI: https://doi.org/10.3174/ajnr.A5007

  6. Haussen, D.C.

    1. Neurointervention
      Even Small Decreases in Blood Pressure during Conscious Sedation Affect Clinical Outcome after Stroke Thrombectomy: An Analysis of Hemodynamic Thresholds
      M.K. Whalin, K.M. Halenda, D.C. Haussen, L.C. Rebello, M.R. Frankel, R.Y. Gershon and R.G. Nogueira
      American Journal of Neuroradiology February 2017, 38 (2) 294-298; DOI: https://doi.org/10.3174/ajnr.A4992

  7. Heesen, C.

    1. ADULT BRAIN
      T1 Recovery Is Predominantly Found in Black Holes and Is Associated with Clinical Improvement in Patients with Multiple Sclerosis
      C. Thaler, T.D. Faizy, J. Sedlacik, B. Holst, K. Stürner, C. Heesen, J.-P. Stellmann, J. Fiehler and S. Siemonsen
      American Journal of Neuroradiology February 2017, 38 (2) 264-269; DOI: https://doi.org/10.3174/ajnr.A5004

  8. Herweh, C.

    1. FELLOWS' JOURNAL CLUBNeurointervention
      Endovascular Stroke Treatment of Nonagenarians
      M. Möhlenbruch, J. Pfaff, S. Schönenberger, S. Nagel, J. Bösel, C. Herweh, P. Ringleb, M. Bendszus and S. Stampfl
      American Journal of Neuroradiology February 2017, 38 (2) 299-303; DOI: https://doi.org/10.3174/ajnr.A4976

      The purpose of this study was the evaluation of procedural and outcome data of patients 90 years of age or older undergoing endovascular stroke treatment. The authors retrospectively analyzed prospectively collected data of 29 patients (mean age 91.9 years) in whom endovascular stroke treatment was performed between January 2011 and January 2016 (from a cohort of 615 patients). Successful recanalization (TICI % 2b) was achieved in 22 patients (75.9%). In 9 patients, an NIHSS improvement ≥ 10 points was noted between admission and discharge. After 3 months, 17.2% of the patients had an mRS of 0-2. Despite high mortality rates (∼45%) and moderate overall outcome, 17.2% of the patients achieved mRS 0-2 or prestroke mRS, and no serious procedure-related complications occurred.

  9. Hess, C.P.

    1. EDITOR'S CHOICEFunctional
      Open Access
      Microstructure of the Default Mode Network in Preterm Infants
      J. Cui, O. Tymofiyeva, R. Desikan, T. Flynn, H. Kim, D. Gano, C.P. Hess, D.M. Ferriero, A.J. Barkovich and D. Xu
      American Journal of Neuroradiology February 2017, 38 (2) 343-348; DOI: https://doi.org/10.3174/ajnr.A4997

      A cohort of 44 preterm infants underwent T1WI, resting-state fMRI, and DTI at 3T, including 21 infants with brain injuries and 23 infants with normal-appearing structural imaging as controls. Neurodevelopment was evaluated with the Bayley Scales of Infant Development at 12 months' adjusted age. Results showed decreased fractional anisotropy and elevated radial diffusivity values of the cingula in the preterm infants with brain injuries compared with controls. The Bayley Scales of Infant Development cognitive scores were significantly associated with cingulate fractional anisotropy. The authors suggest that the microstructural properties of interconnecting axonal pathways within the default mode network are of critical importance in the early neurocognitive development of infants.

    2. ADULT BRAIN
      Open Access
      Intracranial Vessel Wall MRI: Principles and Expert Consensus Recommendations of the American Society of Neuroradiology
      D.M. Mandell, M. Mossa-Basha, Y. Qiao, C.P. Hess, F. Hui, C. Matouk, M.H. Johnson, M.J.A.P. Daemen, A. Vossough, M. Edjlali, D. Saloner, S.A. Ansari, B.A. Wasserman and D.J. Mikulis on behalf of the Vessel Wall Imaging Study Group of the American Society of Neuroradiology
      American Journal of Neuroradiology February 2017, 38 (2) 218-229; DOI: https://doi.org/10.3174/ajnr.A4893

  10. Hoch, M.J.

    1. Spine Imaging and Spine Image-Guided Interventions
      Open Access
      Palliative CT-Guided Cordotomy for Medically Intractable Pain in Patients with Cancer
      T.M. Shepherd, M.J. Hoch, B.A. Cohen, M.T. Bruno, E. Fieremans, G. Rosen, D. Pacione and A.Y. Mogilner
      American Journal of Neuroradiology February 2017, 38 (2) 387-390; DOI: https://doi.org/10.3174/ajnr.A4981
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