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Index by author

March 01, 2018; Volume 39,Issue 3

  1. Zafereo, M.E.

    1. Head and Neck Imaging
      Imaging of Anaplastic Thyroid Carcinoma
      S. Ahmed, M.P. Ghazarian, M.E. Cabanillas, M.E. Zafereo, M.D. Williams, T. Vu, D.F. Schomer and J.M. Debnam
      American Journal of Neuroradiology March 2018, 39 (3) 547-551; DOI: https://doi.org/10.3174/ajnr.A5487

  2. Zamboni, G.A.

    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. Zanazzi, 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

  4. Zhang, B.

    1. Pediatric Neuroimaging
      Prenatal Factors Associated with Postnatal Brain Injury in Infants with Congenital Diaphragmatic Hernia
      R. Radhakrishnan, S.L. Merhar, W. Su, B. Zhang, P. Burns, F.Y. Lim and B.M. Kline-Fath
      American Journal of Neuroradiology March 2018, 39 (3) 558-562; DOI: https://doi.org/10.3174/ajnr.A5500

  5. Zhang, Z.

    1. FELLOWS' JOURNAL CLUBHead and Neck Imaging
      Open Access
      Intravoxel Incoherent Motion MR Imaging in the Differentiation of Benign and Malignant Sinonasal Lesions: Comparison with Conventional Diffusion-Weighted MR Imaging
      Z. Xiao, Z. Tang, J. Qiang, S. Wang, W. Qian, Y. Zhong, R. Wang, J. Wang, L. Wu, W. Tang and Z. Zhang
      American Journal of Neuroradiology March 2018, 39 (3) 538-546; DOI: https://doi.org/10.3174/ajnr.A5532

      One hundred thirty-one patients with histologically proved solid sinonasal lesions (56 benign and 75 malignant) who underwent conventional DWI and intravoxel incoherent motion were evaluated. The diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) values derived from intravoxel incoherent motion and ADC values derived from conventional DWI were measured and compared. The mean ADC and D values were significantly lower in malignant sinonasal lesions than in benign sinonasal lesions and the mean f value was higher in malignant than in benign lesions. Multiparametric models can significantly improve the cross-validated areas under the curve for the differentiation of sinonasal lesions compared with single-parametric models. The authors conclude that intravoxel incoherent motion appears to be a more effective MR imaging technique than conventional DWI in the differentiation of benign and malignant sinonasal lesions.

  6. Zheng, Y.

    1. Pediatric Neuroimaging
      Open Access
      Expression Changes in Lactate and Glucose Metabolism and Associated Transporters in Basal Ganglia following Hypoxic-Ischemic Reperfusion Injury in Piglets
      Y. Zheng and X.-M. Wang
      American Journal of Neuroradiology March 2018, 39 (3) 569-576; DOI: https://doi.org/10.3174/ajnr.A5505

  7. Zhong, Y.

    1. FELLOWS' JOURNAL CLUBHead and Neck Imaging
      Open Access
      Intravoxel Incoherent Motion MR Imaging in the Differentiation of Benign and Malignant Sinonasal Lesions: Comparison with Conventional Diffusion-Weighted MR Imaging
      Z. Xiao, Z. Tang, J. Qiang, S. Wang, W. Qian, Y. Zhong, R. Wang, J. Wang, L. Wu, W. Tang and Z. Zhang
      American Journal of Neuroradiology March 2018, 39 (3) 538-546; DOI: https://doi.org/10.3174/ajnr.A5532

      One hundred thirty-one patients with histologically proved solid sinonasal lesions (56 benign and 75 malignant) who underwent conventional DWI and intravoxel incoherent motion were evaluated. The diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) values derived from intravoxel incoherent motion and ADC values derived from conventional DWI were measured and compared. The mean ADC and D values were significantly lower in malignant sinonasal lesions than in benign sinonasal lesions and the mean f value was higher in malignant than in benign lesions. Multiparametric models can significantly improve the cross-validated areas under the curve for the differentiation of sinonasal lesions compared with single-parametric models. The authors conclude that intravoxel incoherent motion appears to be a more effective MR imaging technique than conventional DWI in the differentiation of benign and malignant sinonasal lesions.

  8. Zins, M.

    1. EDITOR'S CHOICEAdult Brain
      Accuracy of the Compressed Sensing Accelerated 3D-FLAIR Sequence for the Detection of MS Plaques at 3T
      S. Toledano-Massiah, A. Sayadi, R. de Boer, J. Gelderblom, R. Mahdjoub, S. Gerber, M. Zuber, M. Zins and J. Hodel
      American Journal of Neuroradiology March 2018, 39 (3) 454-458; DOI: https://doi.org/10.3174/ajnr.A5517

      Twenty-three patients with relapsing-remitting MS underwent both conventional 3D-FLAIR and compressed sensing 3D-FLAIR on a 3T scanner (reduction in scan time 1 minute 25 seconds, 27%; compressed sensing factor of 1.3). Two blinded readers independently evaluated both conventional and compressed sensing FLAIR for image quality and the number of MS lesions visible in the periventricular, intra-juxtacortical, infratentorial, and optic nerve regions. Image quality and the number of MS lesions detected by the readers were similar between the 2 FLAIR acquisitions. Almost perfect agreement was found between the two FLAIR acquisitions for total MS lesion count. The authors conclude that at 3T, and with a compressed sensing factor of 1.3, 3D-FLAIR is 27% faster and preserves diagnostic performance for the detection of MS plaques.

  9. Zivadinov, R.

    1. Adult Brain
      Open Access
      Substantia Nigra Free Water Increases Longitudinally in Parkinson Disease
      T. Guttuso, N. Bergsland, J. Hagemeier, D.G. Lichter, O. Pasternak and R. Zivadinov
      American Journal of Neuroradiology March 2018, 39 (3) 479-484; DOI: https://doi.org/10.3174/ajnr.A5545

  10. Zuber, M.

    1. EDITOR'S CHOICEAdult Brain
      Accuracy of the Compressed Sensing Accelerated 3D-FLAIR Sequence for the Detection of MS Plaques at 3T
      S. Toledano-Massiah, A. Sayadi, R. de Boer, J. Gelderblom, R. Mahdjoub, S. Gerber, M. Zuber, M. Zins and J. Hodel
      American Journal of Neuroradiology March 2018, 39 (3) 454-458; DOI: https://doi.org/10.3174/ajnr.A5517

      Twenty-three patients with relapsing-remitting MS underwent both conventional 3D-FLAIR and compressed sensing 3D-FLAIR on a 3T scanner (reduction in scan time 1 minute 25 seconds, 27%; compressed sensing factor of 1.3). Two blinded readers independently evaluated both conventional and compressed sensing FLAIR for image quality and the number of MS lesions visible in the periventricular, intra-juxtacortical, infratentorial, and optic nerve regions. Image quality and the number of MS lesions detected by the readers were similar between the 2 FLAIR acquisitions. Almost perfect agreement was found between the two FLAIR acquisitions for total MS lesion count. The authors conclude that at 3T, and with a compressed sensing factor of 1.3, 3D-FLAIR is 27% faster and preserves diagnostic performance for the detection of MS plaques.

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