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    More articles from Head & Neck | American Journal of Neuroradiology  
    
















    




















    
  
  




    
    

  

      


    

      

  
  
  

    

  

    

  

                
    

      

  

    

  
      
  
  

    


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    FELLOWS' JOURNAL CLUBHead & Neck 
    
  
      
    
  
      Evaluation of the Normal Cochlear Second Interscalar Ridge Angle and Depth on 3D T2-Weighted Images: A Tool for the Diagnosis of Scala Communis and Incomplete Partition Type II  
    	
    T.N. Booth, C. Wick, R. Clarke, J.W. Kutz, M. Medina, D. Gorsage, Y. Xi and B. Isaacson
    
  
    	
    American Journal of Neuroradiology May 2018, 39 (5) 923-927; DOI: https://doi.org/10.3174/ajnr.A5585 
    
  
    	
    The second interscalar ridge notch angle and depth were measured on MR imaging in normal ears by a single experienced neuroradiologist. The images of normal ears were then randomly mixed with images of ears with incomplete partition II malformation for 2 novice evaluators to measure both the second interscalar ridge notch angle and depth in a blinded manner. For the mixed group, interobserver agreement was calculated, normal and abnormal ear measurements were compared, and receiver operating characteristic curves were generated. The 94 normal ears had a mean second interscalar ridge angle of 80.86° and depth of 0.54mm with the 98th percentile for an angle of 101° and a depth of 0.3 mm. In the mixed group, agreement between the 2 readers was excellent, with significant differences found between normal and incomplete partition type II ears for angle and depth on average. The authors conclude that a measured angle of >114° and a depth of the second interscalar ridge notch of ≤0.31 mm suggest the diagnosis of incomplete partition type II malformation and scalacommunis.
    
  
  

    

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    HEAD & NECK 
    
  
      
    
  
      Clinical Validation of a Predictive Model for the Presence of Cervical Lymph Node Metastasis in Papillary Thyroid Cancer  
    	
    N.U. Patel, K.E. Lind, K. McKinney, T.J. Clark, S.S. Pokharel, J.M. Meier, E.R. Stamm, K. Garg and B. Haugen
    
  
    	
    American Journal of Neuroradiology April 2018, 39 (4) 756-761; DOI: https://doi.org/10.3174/ajnr.A5554 
    
  
  
  

    

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    HEAD & NECK 
    
  
      
    
  
      Melanoma of the Sinonasal Tract: Value of a Septate Pattern on Precontrast T1-Weighted MR Imaging  
    	
    Y.-K. Kim, J.W. Choi, H.-J. Kim, H.Y. Kim, G.M. Park, Y.-H. Ko, J. Cha and S.T. Kim
    
  
    	
    American Journal of Neuroradiology April 2018, 39 (4) 762-767; DOI: https://doi.org/10.3174/ajnr.A5539 
    
  
  
  

    

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    HEAD & NECK 
    
  
      
    
  
      Intraoperative Conebeam CT for Assessment of Intracochlear Positioning of Electrode Arrays in Adult Recipients of Cochlear Implants  
    	
    H. Jia, R. Torres, Y. Nguyen, D. De Seta, E. Ferrary, H. Wu, O. Sterkers, D. Bernardeschi and I. Mosnier
    
  
    	
    American Journal of Neuroradiology April 2018, 39 (4) 768-774; DOI: https://doi.org/10.3174/ajnr.A5567 
    
  
  
  

    

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    FELLOWS' JOURNAL CLUBHEAD & NECK 
    
  
      
    
  
      MRI with DWI for the Detection of Posttreatment Head and Neck Squamous Cell Carcinoma: Why Morphologic MRI Criteria Matter  
    	
    A. Ailianou, P. Mundada, T. De Perrot, M. Pusztaszieri, P.-A. Poletti and M. Becker
    
  
    	
    American Journal of Neuroradiology April 2018, 39 (4) 748-755; DOI: https://doi.org/10.3174/ajnr.A5548 
    
  
    	
    The authors analyzed 1.5T MRI examinations of 100 consecutive patients treated with radiation therapy with or without additional surgery for head and neck squamous cell carcinoma. MRI examinations included morphologic sequences and DWI. Histology and follow-up served as the standard of reference. Two readers, blinded to clinical/histologic/ follow-up data, evaluated images according to clearly defined criteria for the diagnosis of recurrent head and neck squamous cell carcinoma/second primary head and neck squamous cell carcinoma occurring after treatment, post-radiation therapy inflammatory edema, and late fibrosis. They conclude that adding precise morphologic MRI criteria to quantitative DWI enables reproducible and accurate detection of recurrent head and neck squamous cell carcinoma/second primary head and neck squamous cell carcinoma occurring after treatment.
    
  
  

    

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    FELLOWS' JOURNAL CLUBHead & Neck 
    
  
      
    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.
    
  
  

    

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    Head & Neck 
    
  
      
    
  
      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 
    
  
  
  

    

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    Head & Neck 
    
  
      
    
  
      Comparison of MR Imaging and Dual-Energy CT for the Evaluation of Cartilage Invasion by Laryngeal and Hypopharyngeal Squamous Cell Carcinoma  
    	
    H. Kuno, K. Sakamaki, S. Fujii, K. Sekiya, K. Otani, R. Hayashi, T. Yamanaka, O. Sakai and M. Kusumoto
    
  
    	
    American Journal of Neuroradiology March 2018, 39 (3) 524-531; DOI: https://doi.org/10.3174/ajnr.A5530 
    
  
  
  

    

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    Head & Neck 
    
  
      
    
  
      MR Imaging–Based Evaluations of Olfactory Bulb Atrophy in Patients with Olfactory Dysfunction  
    	
    M.S. Chung, W.R. Choi, H.-Y. Jeong, J.H. Lee and J.H. Kim
    
  
    	
    American Journal of Neuroradiology March 2018, 39 (3) 532-537; DOI: https://doi.org/10.3174/ajnr.A5491 
    
  
  
  

    

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    Head & Neck 
    
  
      
    Open Access
    
  
      MR Imaging Criteria for the Detection of Nasopharyngeal Carcinoma: Discrimination of Early-Stage Primary Tumors from Benign Hyperplasia  
    	
    A.D. King, L.Y.S. Wong, B.K.H. Law, K.S. Bhatia, J.K.S. Woo, Q.-Y. Ai, T.Y. Tan, J. Goh, K.L. Chuah, F.K.F. Mo, K.C.A. Chan, A.T.C. Chan and A.C. Vlantis
    
  
    	
    American Journal of Neuroradiology March 2018, 39 (3) 515-523; DOI: https://doi.org/10.3174/ajnr.A5493 
    
  
  
  

    

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