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    Table of Contents — July 01, 2019, 40 (7) | American Journal of Neuroradiology  
    
















    





















    
  
  




    
    

  

      


    

      

  
  
  

    

  

    

  

                
    

      

  

    

  
      
  
  

    


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Table of Contents
  	
      
July 01, 2019; Volume 40,Issue 7 

  
  
   

  
  



  


  
  



			

		

	
	
 	
	  
  

		
		

			

			  

  
      
  
  

    
Perspectives
  • 
  
  
  
      
    
  
      Perspectives  
    	
    Eoin C. Kavanagh
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1083; DOI: https://doi.org/10.3174/ajnr.P0078 
    
  
  
  

    

Review Article
Practice Perspectives
General Contents
  • 
  
  
      
    FELLOWS' JOURNAL CLUBAdult Brain 
    
  
      
    Open Access
    
  
      3T MRI Whole-Brain Microscopy Discrimination of Subcortical Anatomy, Part 2: Basal Forebrain  
    	
    M.J. Hoch, M.T. Bruno, A. Faustin, N. Cruz, A.Y. Mogilner, L. Crandall, T. Wisniewski, O. Devinsky and T.M. Shepherd
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1095-1105; DOI: https://doi.org/10.3174/ajnr.A6088 
    
  
    	
    The authors applied an optimized TSE T2 sequence to washed whole postmortem brain samples (n=13) to demonstrate and characterize the detailed anatomy of the basal forebrain using a clinical 3T MR imaging scanner. Theyidentified most basal ganglia and diencephalon structures using serial axial, coronal, and sagittal planes relative to the intercommissural plane. Specific oblique image orientations demonstrated the positions and anatomic relationships for selected structures of interest to functional neurosurgery.
    
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    
  
      Wall Contrast Enhancement of Thrombosed Intracranial Aneurysms at 7T MRI  
    	
    T. Sato, T. Matsushige, B. Chen, O. Gembruch, P. Dammann, R. Jabbarli, M. Forsting, A. Junker, S. Maderwald, H.H. Quick, M.E. Ladd, U. Sure and K.H. Wrede
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1106-1111; DOI: https://doi.org/10.3174/ajnr.A6084 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    
  
      Gadolinium Enhancement of the Aneurysm Wall in Unruptured Intracranial Aneurysms Is Associated with an Increased Risk of Aneurysm Instability: A Follow-Up Study  
    	
    M.D.I. Vergouwen, D. Backes, I.C. van der Schaaf, J. Hendrikse, R. Kleinloog, A. Algra and G.J.E. Rinkel
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1112-1116; DOI: https://doi.org/10.3174/ajnr.A6105 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    Open Access
    
  
      Assessing Postconcussive Reaction Time Using Transport-Based Morphometry of Diffusion Tensor Images  
    	
    S. Kundu, A. Ghodadra, S. Fakhran, L.M. Alhilali and G.K. Rohde
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1117-1123; DOI: https://doi.org/10.3174/ajnr.A6087 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    Open Access
    
  
      Association of Fractional Flow on 3D-TOF-MRA with Cerebral Perfusion in Patients with MCA Stenosis  
    	
    X. Ge, H. Zhao, Z. Zhou, X. Li, B. Sun, H. Wu, J. Wan, J. Xu, J.P. Villablanca and X. Liu
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1124-1131; DOI: https://doi.org/10.3174/ajnr.A6095 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    Open Access
    
  
      Quantitative Delta T1 (dT1) as a Replacement for Adjudicated Central Reader Analysis of Contrast-Enhancing Tumor Burden: A Subanalysis of the American College of Radiology Imaging Network 6677/Radiation Therapy Oncology Group 0625 Multicenter Brain Tumor Trial  
    	
    K.M. Schmainda, M.A. Prah, Z. Zhang, B.S. Snyder, S.D. Rand, T.R. Jensen, D.P. Barboriak and J.L. Boxerman
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1132-1139; DOI: https://doi.org/10.3174/ajnr.A6110 
    
  
  
  

    

  • 
  
  
      
    EDITOR'S CHOICEAdult Brain 
    
  
      
    
  
      Brain Tumor-Enhancement Visualization and Morphometric Assessment: A Comparison of MPRAGE, SPACE, and VIBE MRI Techniques  
    	
    L. Danieli, G.C. Riccitelli, D. Distefano, E. Prodi, E. Ventura, A. Cianfoni, A. Kaelin-Lang, M. Reinert and E. Pravatà
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1140-1148; DOI: https://doi.org/10.3174/ajnr.A6096 
    
  
    	
    Fifty-four contrast-enhancing tumors (38 gliomas and 16 metastases) were assessed using MPRAGE, VIBE, and SPACE techniques randomly acquired after gadolinium-based contrast agent administration on a 3T scanner. Enhancement conspicuity was assessed quantitatively by calculating the contrast rate and contrast-to-noise ratio, and qualitatively, by consensus visual comparative ratings. Compared with MPRAGE, both SPACE and VIBE obtained higher contrast rate, contrast-to-noise ratio, and visual conspicuity ratings in both gliomas and metastases. The authors conclude that superior conspicuity for brain tumor enhancement can be achieved using SPACE and VIBE techniques, compared with MPRAGE.
    
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    
  
      Extent of Surgical Resection in Lower-Grade Gliomas: Differential Impact Based on Molecular Subtype  
    	
    S.H. Patel, A.G. Bansal, E.B. Young, P.P. Batchala, J.T. Patrie, M.B. Lopes, R. Jain, C.E. Fadul and D. Schiff
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1149-1155; DOI: https://doi.org/10.3174/ajnr.A6102 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    Open Access
    
  
      Normal-Appearing Cerebellar Damage in Neuromyelitis Optica Spectrum Disorder  
    	
    J. Sun, N. Zhang, Q. Wang, X. Zhang, W. Qin, L. Yang, F.-D. Shi and C. Yu
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1156-1161; DOI: https://doi.org/10.3174/ajnr.A6098 
    
  
  
  

    

  • 
  
  
      
    EDITOR'S CHOICEAdult Brain 
    
  
      
    Open Access
    
  
      Comparison of Multiple Sclerosis Cortical Lesion Types Detected by Multicontrast 3T and 7T MRI  
    	
    J. Maranzano, M. Dadar, D.A. Rudko, D. De Nigris, C. Elliott, J.S. Gati, S.A. Morrow, R.S. Menon, D.L. Collins, D.L. Arnold and S. Narayanan
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1162-1169; DOI: https://doi.org/10.3174/ajnr.A6099 
    
  
    	
    The aim of the authors was: 1) to compare multicontrast cortical lesion detection using 3T and 7T MR imaging, 2) to compare cortical lesion type frequency in relapsing-remitting and secondary-progressive MS, and 3) to assess whether detectability is related to the magnetization transfer ratio, an imaging marker sensitive to myelin content. Multicontrast 3T and 7T MR images from 10 patients with relapsing-remitting MS and 10 with secondary-progressive MS were evaluated with the following 3T contrasts: 3D-T1-weighted, quantitative T1, FLAIR and magnetization-transfer, and 2D proton density- and T2-weighted. The following 7T contrasts were used: 3D-T1-weighted, quantitative T1, and 2D-T2*-weighted. Cortical lesion counts at 7T were the following: 720 total cortical lesions, 420 leukocortical lesions (58%), 27 intracortical lesions (4%), and 273 subpial lesions (38%). Cortical lesion counts at 3T were the following: 424 total cortical, 393 leukocortical (93%), 0intracortical, and 31 subpial (7%) lesions. Total, intracortical, and subpial 3T lesion counts were significantly lower than the 7Tcounts. The authors conclude that detection of leukocortical lesions at 3T is comparable with that at 7T MR imaging. Imaging at 3T is less sensitive to intracortical and subpial lesions.
    
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    
  
      Improving Detection of Multiple Sclerosis Lesions in the Posterior Fossa Using an Optimized 3D-FLAIR Sequence at 3T  
    	
    A. Lecler, I. El Sanharawi, J. El Methni, O. Gout, P. Koskas and J. Savatovsky
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1170-1176; DOI: https://doi.org/10.3174/ajnr.A6107 
    
  
  
  

    

  • 
  
  
      
    Adult Brain 
    
  
      
    
  
      Impact of Skull Defects on the Role of CTA for Brain Death Confirmation  
    	
    D.M. Nunes, A.C.M. Maia, R.C. Boni and A.J. da Rocha
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1177-1183; DOI: https://doi.org/10.3174/ajnr.A6100 
    
  
  
  

    

  • 
  
  
      
    FELLOWS' JOURNAL CLUBAdult Brain 
    
  
      
    
  
      Diagnosis and Prediction of Relapses in Susac Syndrome: A New Use for MR Postcontrast FLAIR Leptomeningeal Enhancement  
    	
    S. Coulette, A. Lecler, E. Saragoussi, K. Zuber, J. Savatovsky, R. Deschamps, O. Gout, C. Sabben, J. Aboab, A. Affortit, F. Charbonneau and M. Obadia
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1184-1190; DOI: https://doi.org/10.3174/ajnr.A6103 
    
  
    	
    From January 2011 to December 2017, nine consecutive patients with Susac syndrome and a control group of 73 patients with multiple sclerosis or clinically isolated syndrome were included. Two neuroradiologists blinded to the clinical and ophthalmologic data independently reviewed MRIs and assessed leptomeningeal enhancement and parenchymal abnormalities. Follow-up MRIs of patients with Susac syndrome were reviewed and compared with clinical and retinal fluorescein angiographic data evaluated by an independent ophthalmologist. Patients with Susac syndrome were significantly more likely to present with leptomeningeal enhancement: 5/9 (56%) versus 6/73 (8%) in the control group. They had a significantly higher leptomeningeal enhancement burden with ≥3 lesions in 5/9 patients versus 0/73. Regions of leptomeningeal enhancement were significantly more likely to be located in the posterior fossa. The authors conclude that leptomeningeal enhancement occurs frequently in Susac syndrome and could be helpful for diagnosis and prediction of clinical relapse.
    
  
  

    

  • 
  
  
      
    FELLOWS' JOURNAL CLUBInterventional 
    
  
      
    
  
      Long-Term Results and Follow-Up Examinations after Endovascular Embolization for Unruptured Cerebral Aneurysms  
    	
    T. Murakami, T. Nishida, K. Asai, Y. Kadono, H. Nakamura, T. Fujinaka and H. Kishima
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1191-1196; DOI: https://doi.org/10.3174/ajnr.A6101 
    
  
    	
    The appropriate period of follow-up examinations after endovascular embolization for cerebral aneurysms using time-of-flight MR angiography is not well-known. Between April 2006 and March 2011, one hundred forty-eight unruptured aneurysms were treated with endovascular coil embolization. Among them, the authors investigated 116 unruptured aneurysms, which were followed up for >5 years. Time-of-flight MRA was performed at 1 day, 3–6 months, 1 year after the procedure, and every year thereafter. The mean follow-up period was 7.0 years. Recanalization was observed in 19 (16.3%) aneurysms within 2 years. Among them, retreatment was performed in 8 (6.8%) aneurysms. No recanalization was detected in any aneurysms that had been stable in the first 2 years after embolization. They conclude that aneurysms in which recanalization was not observed within 2 years after endovascular coil embolization were stable during a mean follow-up of 7 years. This result may be helpful in considering the appropriate span or frequency of follow-up imaging for embolized cerebral aneurysms.
    
  
  

    

  • 
  
  
      
    Interventional 
    
  
      
    
  
      Flow-Pattern Details in an Aneurysm Model Using High-Speed 1000-Frames-per-Second Angiography  
    	
    J.M. Krebs, A. Shankar, S.V. Setlur Nagesh, J.M. Davies, K.V. Snyder, E.I. Levy, L.N. Hopkins, M. Mokin, D.R. Bednarek, A.H. Siddiqui and S. Rudin
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1197-1200; DOI: https://doi.org/10.3174/ajnr.A6090 
    
  
  
  

    

  • 
  
  
      
    Interventional 
    
  
      
    
  
      Antiplatelet Therapy in Patients with Aneurysmal SAH: Impact on Delayed Cerebral Ischemia and Clinical Outcome. A Meta-Analysis  
    	
    F. Cagnazzo, I. Derraz, P.-H. Lefevre, G. Gascou, C. Dargazanli, C. Riquelme, P. Perrini, D. di Carlo, A. Bonafe and V. Costalat
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1201-1206; DOI: https://doi.org/10.3174/ajnr.A6086 
    
  
  
  

    

  • 
  
  
      
    Extracranial Vascular 
    
  
      
    
  
      Comparison of Carotid Endarterectomy and Stenting for Symptomatic Internal Carotid Artery Near-Occlusion  
    	
    J. Kim, S. Male, D. Damania, B.S. Jahromi and R.P. Tummala
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1207-1212; DOI: https://doi.org/10.3174/ajnr.A6085 
    
  
  
  

    

  • 
  
  
      
    Pediatrics 
    
  
      
    
  
      Functional Connectivity Associated with Health-Related Quality of Life in Children with Focal Epilepsy  
    	
    H. Nawani, M.L. Smith, A.L. Wheeler and E. Widjaja
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1213-1220; DOI: https://doi.org/10.3174/ajnr.A6106 
    
  
  
  

    

  • 
  
  
      
    Pediatrics 
    
  
      
    
  
      Quantitative Analysis of Punctate White Matter Lesions in Neonates Using Quantitative Susceptibility Mapping and R2* Relaxation  
    	
    Y. Zhang, A. Rauscher, C. Kames and A.M. Weber
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1221-1226; DOI: https://doi.org/10.3174/ajnr.A6114 
    
  
  
  

    

  • 
  
  
      
    EDITOR'S CHOICEPediatrics 
    
  
      
    
  
      Predictive Value of MRI in Diagnosing Brain AVM Recurrence after Angiographically Documented Exclusion in Children  
    	
    A. Jhaveri, A. Amirabadi, P. Dirks, A.V. Kulkarni, M.M. Shroff, N. Shkumat, T. Krings, V.M. Pereira, V. Rea and P. Muthusami
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1227-1235; DOI: https://doi.org/10.3174/ajnr.A6093 
    
  
    	
    The authors sought to determine the predictive values of contrast-enhanced MR imaging and TOF-MRA for brain AVM recurrence in children, compared with conventional angiography, in 39 patients (mean 10.8 years of age, mean Spetzler-Martin grade, 1.9). Features predictive of recurrence included a tuft of vessels on TOF-MRA and nodular juxtamural/linear enhancement with a draining vein on contrast-enhanced MR imaging. MR imaging is useful for surveillance after brain AVM treatment in children, but conventional angiography is required for definitive diagnosis of recurrence. TOF-MRA and contrast-enhanced MR imaging provide complementary information for determining brain AVM recurrence and should be interpreted in conjunction.
    
  
  

    

  • 
  
  
      
    Spine 
    
  
      
    
  
      Quantification of DTI in the Pediatric Spinal Cord: Application to Clinical Evaluation in a Healthy Patient Population  
    	
    B.B. Reynolds, S. By, Q.R. Weinberg, A.A. Witt, A.T. Newton, H.R. Feiler, B. Ramkorun, D.B. Clayton, P. Couture, J.E. Martus, M. Adams, J.C. Wellons, S.A. Smith and A. Bhatia
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1236-1241; DOI: https://doi.org/10.3174/ajnr.A6104 
    
  
  
  

    

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    Spine 
    
  
      
    
  
      Subject-Specific Studies of CSF Bulk Flow Patterns in the Spinal Canal: Implications for the Dispersion of Solute Particles in Intrathecal Drug Delivery  
    	
    W. Coenen, C. Gutiérrez-Montes, S. Sincomb, E. Criado-Hidalgo, K. Wei, K. King, V. Haughton, C. Martínez-Bazán, A.L. Sánchez and J. C. Lasheras
    
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1242-1249; DOI: https://doi.org/10.3174/ajnr.A6097 
    
  
  
  

    

35 Years Ago in AJNR
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    35 Years Ago in AJNR 
    
  
      
    
  
      Celebrating 35 Years of the AJNR  
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) 1250; DOI: https://doi.org/10.3174/ajnr.P0082 
    
  
  
  

    

Online Features
Erratum
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    Erratum 
    
  
      
    
  
      Erratum  
  
    	
    American Journal of Neuroradiology July 2019, 40 (7) E39; DOI: https://doi.org/10.3174/ajnr.A6082 
    
  
  
  

    

  


  
  



  
      
  
  

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