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    Index by author — February 01, 2020, 41 (2) | American Journal of Neuroradiology  
    
















    





















    
  
  




    
    

  

      


    

      

  
  
  

    

  

    

  

                
    

      

  

    

  
      
  
  

    


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Index by author
  	
      
February 01, 2020; Volume 41,Issue 2 

  
  
   

  
  



  


  
  



			

		

	
	
 	
	  
  

		
		

			

			  

  
      
  
  

    
  1. Nagaraj, S.
    1. 
  
  
      
      EDITOR'S CHOICEAdult Brain 
      
  
      
      
  
      Spiral T1 Spin-Echo for Routine Postcontrast Brain MRI Exams: A Multicenter Multireader Clinical Evaluation  
    	
      M.B. Ooi, Z. Li, R.K. Robison, D. Wang, A.G. Anderson, N.R. Zwart, A. Bakhru, S. Nagaraj, T. Mathews, S. Hey, J.J. Koonen, I.E. Dimitrov, H.T. Friel, Q. Lu, M. Obara, I. Saha, H. Wang, Y. Wang, Y. Zhao, M. Temkit, H.H. Hu, T.L. Chenevert, O. Togao, J.A. Tkach, U.D. Nagaraj, M.C. Pinho, R.K. Gupta, J.E. Small, M.M. Kunst, J.P. Karis, J.B. Andre, J.H. Miller, N.K. Pinter and J.G. Pipe
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 238-245; DOI: https://doi.org/10.3174/ajnr.A6409 
      
  
    	
      The authors report a multicenter multireader study that was designed to compare spiral with standard-of-care Cartesian postcontrast structural brain MR imaging on the basis of relative performance in 10 metrics of image quality, artifact prevalence, and diagnostic benefit. Seven clinical sites acquired 88 total subjects. For each subject, sites acquired 2 postcontrast MR imaging scans: a spiral 2D T1 spin-echo, and 1 of 4 routine Cartesian 2D T1 spin-echo/TSE scans. Nine neuroradiologists independently reviewed each subject, with the matching pair of spiral and Cartesian scans compared side-by-side, and scored the subject on 10 image-quality metrics. Spiral was superior to Cartesian in 7 of 10 metrics (flow artifact mitigation, SNR, GM/WM contrast, image sharpness, lesion conspicuity, preference for diagnosing abnormal enhancement, and overall intracranial image quality), comparable in 1 of 10 metrics (motion artifacts), and inferior in 2 of 10 metrics (susceptibility artifacts, overall extracranial image quality). Spiral 2D T1 spin-echo for routine structural brain MR imaging is feasible in the clinic with conventional scanners and was preferred by neuroradiologists for overall postcontrast intracranial evaluation.
      
  
  

      

  2. Nagaraj, U.D.
    1. 
  
  
      
      EDITOR'S CHOICEAdult Brain 
      
  
      
      
  
      Spiral T1 Spin-Echo for Routine Postcontrast Brain MRI Exams: A Multicenter Multireader Clinical Evaluation  
    	
      M.B. Ooi, Z. Li, R.K. Robison, D. Wang, A.G. Anderson, N.R. Zwart, A. Bakhru, S. Nagaraj, T. Mathews, S. Hey, J.J. Koonen, I.E. Dimitrov, H.T. Friel, Q. Lu, M. Obara, I. Saha, H. Wang, Y. Wang, Y. Zhao, M. Temkit, H.H. Hu, T.L. Chenevert, O. Togao, J.A. Tkach, U.D. Nagaraj, M.C. Pinho, R.K. Gupta, J.E. Small, M.M. Kunst, J.P. Karis, J.B. Andre, J.H. Miller, N.K. Pinter and J.G. Pipe
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 238-245; DOI: https://doi.org/10.3174/ajnr.A6409 
      
  
    	
      The authors report a multicenter multireader study that was designed to compare spiral with standard-of-care Cartesian postcontrast structural brain MR imaging on the basis of relative performance in 10 metrics of image quality, artifact prevalence, and diagnostic benefit. Seven clinical sites acquired 88 total subjects. For each subject, sites acquired 2 postcontrast MR imaging scans: a spiral 2D T1 spin-echo, and 1 of 4 routine Cartesian 2D T1 spin-echo/TSE scans. Nine neuroradiologists independently reviewed each subject, with the matching pair of spiral and Cartesian scans compared side-by-side, and scored the subject on 10 image-quality metrics. Spiral was superior to Cartesian in 7 of 10 metrics (flow artifact mitigation, SNR, GM/WM contrast, image sharpness, lesion conspicuity, preference for diagnosing abnormal enhancement, and overall intracranial image quality), comparable in 1 of 10 metrics (motion artifacts), and inferior in 2 of 10 metrics (susceptibility artifacts, overall extracranial image quality). Spiral 2D T1 spin-echo for routine structural brain MR imaging is feasible in the clinic with conventional scanners and was preferred by neuroradiologists for overall postcontrast intracranial evaluation.
      
  
  

      

  3. Nagata, H.
    1. 
  
  
      
      Adult Brain 
      
  
      
      
  
      Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT  
    	
      K. Murayama, S. Suzuki, H. Nagata, J. Oda, I. Nakahara, K. Katada, K. Fujii and H. Toyama
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 219-223; DOI: https://doi.org/10.3174/ajnr.A6377 
      
  
  
  

      

  4. Nagayama, Y.
    1. 
  
  
      
      Adult Brain 
      
  
      
      
  
      Metal Artifact Reduction in Head CT Performed for Patients with Deep Brain Stimulation Devices: Effectiveness of a Single-Energy Metal Artifact Reduction Algorithm  
    	
      Y. Nagayama, S. Tanoue, S. Oda, D. Sakabe, T. Emoto, M. Kidoh, H. Uetani, A. Sasao, T. Nakaura, O. Ikeda, K. Yamada and Y. Yamashita
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 231-237; DOI: https://doi.org/10.3174/ajnr.A6375 
      
  
  
  

      

  5. Najm, M.
    1. 
  
  
      
      Practice Perspectives 
      
  
      
      Open Access
      
  
      Displaying Multiphase CT Angiography Using a Time-Variant Color Map: Practical Considerations and Potential Applications in Patients with Acute Stroke  
    	
      J.M. Ospel, O. Volny, W. Qiu, M. Najm, N. Kashani, M. Goyal and B.K. Menon
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 200-205; DOI: https://doi.org/10.3174/ajnr.A6376 
      
  
  
  

      

  6. Nakahara, I.
    1. 
  
  
      
      Adult Brain 
      
  
      
      
  
      Visualization of Lenticulostriate Arteries on CT Angiography Using Ultra-High-Resolution CT Compared with Conventional-Detector CT  
    	
      K. Murayama, S. Suzuki, H. Nagata, J. Oda, I. Nakahara, K. Katada, K. Fujii and H. Toyama
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 219-223; DOI: https://doi.org/10.3174/ajnr.A6377 
      
  
  
  

      

  7. Nakaura, T.
    1. 
  
  
      
      Adult Brain 
      
  
      
      
  
      Metal Artifact Reduction in Head CT Performed for Patients with Deep Brain Stimulation Devices: Effectiveness of a Single-Energy Metal Artifact Reduction Algorithm  
    	
      Y. Nagayama, S. Tanoue, S. Oda, D. Sakabe, T. Emoto, M. Kidoh, H. Uetani, A. Sasao, T. Nakaura, O. Ikeda, K. Yamada and Y. Yamashita
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) 231-237; DOI: https://doi.org/10.3174/ajnr.A6375 
      
  
  
  

      

  8. Nietert, P.J.
    1. 
  
  
      
      LETTER 
      
  
      
      
  
      Reply:  
    	
      D.R. Roberts, D. Asemani, P.J. Nietert, M.A. Eckert, D.C. Inglesby, J.J. Bloomberg, M.S. George and T.R. Brown
      
  
    	
      American Journal of Neuroradiology February 2020, 41 (2) E8; DOI: https://doi.org/10.3174/ajnr.A6400 
      
  
  
  

      

  


  
  



  
      
  
  

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