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Index by author

March 01, 2018; Volume 39,Issue 3

  1. Bonatti, M.

    1. EDITOR'S CHOICEAdult Brain
      Iodine Extravasation Quantification on Dual-Energy CT of the Brain Performed after Mechanical Thrombectomy for Acute Ischemic Stroke Can Predict Hemorrhagic Complications
      M. Bonatti, F. Lombardo, G.A. Zamboni, F. Vittadello, R. Currò Dossi, B. Bonetti, R. Pozzi Mucelli and G. Bonatti
      American Journal of Neuroradiology March 2018, 39 (3) 441-447; DOI: https://doi.org/10.3174/ajnr.A5513

      Eighty-five consecutive patients who underwent brain dual-energy CT immediately after mechanical thrombectomy for acute ischemic stroke between August 2013 and January 2017 were included. Two radiologists independently evaluated dual-energy CT images for the presence of parenchymal hyperdensity, iodine extravasation, and hemorrhage. Thirteen of 85 patients developed hemorrhage. On postoperative dual-energy CT, parenchymal hyperdensities and iodine extravasation were present in 100% of the patients who developed intracerebral hemorrhage and in 56.3% of the patients who did not. Median maximum iodine concentration was 2.63 mg/mL in the patients who developed intracerebral hemorrhage and 1.4 mg/mL in the patients who did not. The authors conclude that the presence of parenchymal hyperdensity with a maximum iodine concentration of greater than 1.35 mg/mL may identify patients developing intracerebral hemorrhage with 100% sensitivity and 67.6% specificity.

  2. Bonetti, B.

    1. EDITOR'S CHOICEAdult Brain
      Iodine Extravasation Quantification on Dual-Energy CT of the Brain Performed after Mechanical Thrombectomy for Acute Ischemic Stroke Can Predict Hemorrhagic Complications
      M. Bonatti, F. Lombardo, G.A. Zamboni, F. Vittadello, R. Currò Dossi, B. Bonetti, R. Pozzi Mucelli and G. Bonatti
      American Journal of Neuroradiology March 2018, 39 (3) 441-447; DOI: https://doi.org/10.3174/ajnr.A5513

      Eighty-five consecutive patients who underwent brain dual-energy CT immediately after mechanical thrombectomy for acute ischemic stroke between August 2013 and January 2017 were included. Two radiologists independently evaluated dual-energy CT images for the presence of parenchymal hyperdensity, iodine extravasation, and hemorrhage. Thirteen of 85 patients developed hemorrhage. On postoperative dual-energy CT, parenchymal hyperdensities and iodine extravasation were present in 100% of the patients who developed intracerebral hemorrhage and in 56.3% of the patients who did not. Median maximum iodine concentration was 2.63 mg/mL in the patients who developed intracerebral hemorrhage and 1.4 mg/mL in the patients who did not. The authors conclude that the presence of parenchymal hyperdensity with a maximum iodine concentration of greater than 1.35 mg/mL may identify patients developing intracerebral hemorrhage with 100% sensitivity and 67.6% specificity.

  3. Bortolotti, C.

    1. Spine Imaging and Spine Image-Guided Interventions
      Spinal Arteriovenous Vascular Malformations in Patients with Neural Tube Defects
      E. Giordan, C. Bortolotti, G. Lanzino and W. Brinjikji
      American Journal of Neuroradiology March 2018, 39 (3) 597-603; DOI: https://doi.org/10.3174/ajnr.A5498

  4. Boschetti, E.

    1. Adult Brain
      Open Access
      Cerebral Mitochondrial Microangiopathy Leads to Leukoencephalopathy in Mitochondrial Neurogastrointestinal Encephalopathy
      L.L. Gramegna, A. Pisano, C. Testa, D.N. Manners, R. D'Angelo, E. Boschetti, F. Giancola, L. Pironi, L. Caporali, M. Capristo, M.L. Valentino, G. Plazzi, C. Casali, M.T. Dotti, G. Cenacchi, M. Hirano, C. Giordano, P. Parchi, R. Rinaldi, R. De Giorgio, R. Lodi, V. Carelli and C. Tonon
      American Journal of Neuroradiology March 2018, 39 (3) 427-434; DOI: https://doi.org/10.3174/ajnr.A5507

  5. Bowden, S.G.

    1. Functional
      Open Access
      Local Glioma Cells Are Associated with Vascular Dysregulation
      S.G. Bowden, B.J.A. Gill, Z.K. Englander, C.I. Horenstein, G. Zanazzi, P.D. Chang, J. Samanamud, A. Lignelli, J.N. Bruce, P. Canoll and J. Grinband
      American Journal of Neuroradiology March 2018, 39 (3) 507-514; DOI: https://doi.org/10.3174/ajnr.A5526

  6. Boyd, R.N.

    1. Reply:
      J.M. George, S. Fiori, J. Fripp, K. Pannek, J. Bursle, R.X. Moldrich, A. Guzzetta, A. Coulthard, R.S. Ware, S.E. Rose, P.B. Colditz and R.N. Boyd
      American Journal of Neuroradiology March 2018, 39 (3) E40-E41; DOI: https://doi.org/10.3174/ajnr.A5478

  7. Brinjikji, W.

    1. Spine Imaging and Spine Image-Guided Interventions
      Spinal Arteriovenous Vascular Malformations in Patients with Neural Tube Defects
      E. Giordan, C. Bortolotti, G. Lanzino and W. Brinjikji
      American Journal of Neuroradiology March 2018, 39 (3) 597-603; DOI: https://doi.org/10.3174/ajnr.A5498

  8. Brown, D.

    1. FELLOWS' JOURNAL CLUBPediatric Neuroimaging
      Multiparametric Analysis of Permeability and ADC Histogram Metrics for Classification of Pediatric Brain Tumors by Tumor Grade
      S. Vajapeyam, D. Brown, P.R. Johnston, K.I. Ricci, M.W. Kieran, H.G.W. Lidov and T.Y. Poussaint
      American Journal of Neuroradiology March 2018, 39 (3) 552-557; DOI: https://doi.org/10.3174/ajnr.A5502

      DTI and dynamic contrast-enhanced MR imaging using T1-mapping with flip angles of 2°, 5°, 10°, and 15°, followed by a 0.1-mmol/kg body weight gadolinium-based bolus was performed on 41 patients in addition to standard MR imaging. Permeability data were processed and transfer constant from the blood plasma into the extracellular extravascular space, rate constant from the extracellular extravascular space back into blood plasma, extracellular extravascular volume fraction, and fractional blood plasma volume were calculated from 3D tumor volumes. Apparent diffusion coefficient histogram metrics were calculated. Wilcoxon tests showed a higher transfer constant from blood plasma into extracellular extravascular space and rate constant from extracellular extravascular space back into blood plasma, and lower extracellular extravascular volume fraction in high-grade tumors. The mean ADCs of FLAIR and enhancing tumor volumes were significantly lower in high-grade tumors. The authors conclude that ADC histogram metrics combined with permeability metrics differentiate low- and high-grade pediatric brain tumors with high accuracy.

  9. Bruce, J.N.

    1. Functional
      Open Access
      Local Glioma Cells Are Associated with Vascular Dysregulation
      S.G. Bowden, B.J.A. Gill, Z.K. Englander, C.I. Horenstein, G. Zanazzi, P.D. Chang, J. Samanamud, A. Lignelli, J.N. Bruce, P. Canoll and J. Grinband
      American Journal of Neuroradiology March 2018, 39 (3) 507-514; DOI: https://doi.org/10.3174/ajnr.A5526

  10. Bucke, P.

    1. FELLOWS' JOURNAL CLUBNeurointervention
      Endovascular Thrombectomy in Wake-Up Stroke and Stroke with Unknown Symptom Onset
      P. Bücke, M. Aguilar Pérez, V. Hellstern, M. AlMatter, H. Bäzner and H. Henkes
      American Journal of Neuroradiology March 2018, 39 (3) 494-499; DOI: https://doi.org/10.3174/ajnr.A5540

      The authors evaluated 1073 patients with anterior circulation stroke undergoing mechanical thrombectomy between 2010 and 2016. Patients with wake-up stroke and daytime-unwitnessed stroke were compared with controls receiving mechanical thrombectomy as the standard of care. There was no significant difference in good functional outcome between patients with wake-up stroke and controls. Outcome in patients with daytime-unwitnessed stroke was inferior compared with controls. Groups did not differ in all-cause mortality at day 90 and the rate of symptomatic intracranial hemorrhage. They conclude that mechanical thrombectomy in selected patients with wake-up stroke allows a good functional outcome comparable with that of controls.

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