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    Table of Contents — December 01, 2012, 33 (11) | American Journal of Neuroradiology  
    
















    





















    
  
  




    
    

  

      


    

      

  
  
  

    

  

    

  

                
    

      

  

    

  
      
  
  

    


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Table of Contents
  	
      
December 01, 2012; Volume 33,Issue 11 

  
  
   

  
  



  


  
  



			

		

	
	
 	
	  
  

		
		

			

			  

  
      
  
  

    
Editorial
  • 
  
  
      
    Editorial 
    
  
      
    
  
      Visiting with Dr. Ralph Heinz  
    	
    M. Castillo
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2023-2025; DOI: https://doi.org/10.3174/ajnr.A2945 
    
  
  
  

    

50th Anniversary Perspectives
Review Article
Patient Safety
  • 
  
  
      
    FELLOWS' JOURNAL CLUBPatient Safety 
    
  
      
    
  
      A Comparison of Radiation Exposure between Diagnostic CTA and DSA Examinations of Cerebral and Cervicocerebral Vessels  
    	
    A.-L. Manninen, J.-M. Isokangas, A. Karttunen, T. Siniluoto and M.T. Nieminen
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2038-2042; DOI: https://doi.org/10.3174/ajnr.A3123 
    
  
    	
    

    This article compares radiation exposure from CTA and DSA used to evaluate the extra- and intracranial circulations. Experiments were performed on a phantom using a 64-section CT scanner and biplane DSA. The authors concluded that the effective dose for CTA assessment of cerebral vessels was approximately one-fifth the dose compared with DSA. In the imaging of cervicocerebral vessels, the effective dose for CTA was approximately one-third higher compared with DSA.
    

    
  
  

    

Pediatrics
Brain
Head & Neck
  • 
  
  
      
    FELLOWS' JOURNAL CLUBHead & Neck 
    
  
      
    
  
      Retinoblastoma: Value of Dynamic Contrast-Enhanced MR Imaging and Correlation with Tumor Angiogenesis  
    	
    F. Rodjan, P. de Graaf, P. van der Valk, A.C. Moll, J.P.A. Kuijer, D.L. Knol, J.A. Castelijns and P.J.W. Pouwels
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2129-2135; DOI: https://doi.org/10.3174/ajnr.A3119 
    
  
    	
    

    Fifteen patients with retinoblastoma were assessed with dynamic contrast-enhanced MRI over a period of 8 minutes; late contrast enhancement was also studied. The authors found that during the early phase of the perfusion studies the time curve correlated with microvessel density whereas late enhancement correlated with tumor necrosis. Thus, dynamic contrast-enhanced MRI may be used to assess angiogenesis and necrosis and may be used to monitor treatment.
    
  
  

    

  • 
  
  
      
    FELLOWS' JOURNAL CLUBHead & Neck 
    
  
      
    Open Access
    
  
      MR Imaging of IgG4-Related Disease in the Head and Neck and Brain  
    	
    K. Toyoda, H. Oba, K. Kutomi, S. Furui, A. Oohara, H. Mori, K. Sakurai, K. Tsuchiya, S. Kan and Y. Numaguchi
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2136-2139; DOI: https://doi.org/10.3174/ajnr.A3147 
    
  
    	
    

    Autoimmune pancreatitis, sclerosing cholangitis and sialoadenitis, retroperitoneal and mediastinal fibrosis, and insterstitial pneumonia are all IgG-4 related disorders. This short article discusses the head and neck manifestations of this disease: orbital pseudotumor and lacrimal gland, cranial nerve, and pituitary involvement. Intracranially, the dura may be also affected. All of these lesions were contrast-enhancing and T2 dark, findings to be kept in mind so that one can suggest their etiology.
    
  
  

    

  • 
  
  
      
    Head & Neck 
    
  
      
    Open Access
    
  
      CT and MR Imaging Findings of Periorbital Lipogranuloma Developing after Endoscopic Sinus Surgery  
    	
    B.T. Yang, Y.J. Liu, Y.Z. Wang, X.Y. Wang and Z.C. Wang
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2140-2143; DOI: https://doi.org/10.3174/ajnr.A3182 
    
  
  
  

    

Extracranial Vascular
  • 
  
  
      
    EDITOR'S CHOICEExtracranial Vascular 
    
  
      
    
  
      Association between Carotid Artery Plaque Type and Cerebral Microbleeds  
    	
    L. Saba, R. Montisci, E. Raz, R. Sanfilippo, J.S. Suri and M. Piga
    
  
    	
    American Journal of Neuroradiology December 2012, 33 (11) 2144-2150; DOI: https://doi.org/10.3174/ajnr.A3133 
    
  
    	
    

    This article explores the relationship between brain microbleeds and the type of plaque occurring in the carotid arteries of these patients. The authors assessed the plaques using CT and brain MRI with blood-sensitive gradient-echo sequences (they did not use SWI). Thirty percent of patients showed microbleeds; one-half were symptomatic. A statistically significant association between cerebral microbleeds and fatty carotid plaques was found.
    
  
  

    

Functional
Interventional
Spine
Technical Note: (Online only)
Letters: (Online only)
  


  
  



  
      
  
  

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