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      Favorable Bridging Therapy Based on DWI-FLAIR Mismatch in Patients with Unclear-Onset Stroke  
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    	I. Blystad, I. Håkansson, A. Tisell, J. Ernerudh, Ö. Smedby, P. Lundberg and E.-M. Larsson
  
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      Risk Factors for Hemorrhagic Complications following Pipeline Embolization Device Treatment of Intracranial Aneurysms: Results from the International Retrospective Study of the Pipeline Embolization Device  
    	W. Brinjikji, G. Lanzino, H.J. Cloft, A.H. Siddiqui and D.F. Kallmes
  
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    	In this study of 793 patients with 906 aneurysms, 20 (2.5%) had intraparenchymal hemorrhage. Nine patients with intraparenchymal hemorrhage (45.0%) died, 10 (50.0%) had major neurologic morbidity, and 1 (5.0%) had minor neurologic morbidity. Variables associated with higher odds of intraparenchymal hemorrhage included treatment of ruptured aneurysms and the use of 3 or more Pipeline Embolization Devices. The Shuttle sheath was not associated with intraparenchymal hemorrhage.
  
  


  
  
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      Diagnostic Accuracy of PET, SPECT, and Arterial Spin-Labeling in Differentiating Tumor Recurrence from Necrosis in Cerebral Metastasis after Stereotactic Radiosurgery  
    	G. Lai, A. Mahadevan, D. Hackney, P.C. Warnke, F. Nigim, E. Kasper, E.T. Wong, B.S. Carter and C.C. Chen
  
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    	The authors retrospectively reviewed patients treated between 2007–2010 and identified 14 patients with cerebral metastasis who had clinical or radiographic progression following stereotactic radiosurgery and were imaged with arterial spin-labeling (ASL), FDG-PET, and thallium SPECT before stereotactic biopsy. FDG-PET and ASL were equally sensitive in detecting tumor progression (83%). The specificity of ASL was superior to that of the other modalities (100%, 75%, and 50%, respectively). A combination of modalities did not augment the sensitivity, specificity, positive predictive value, or negative predictive value of ASL.
  
  


  
  
      INTERVENTIONAL 
  
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      Determinants of Intracranial Hemorrhage Occurrence and Outcome after Neurothrombectomy Therapy: Insights from the Solitaire FR With Intention For Thrombectomy Randomized Trial  
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      MRI Texture Analysis Reveals Bulbar Abnormalities in Friedreich Ataxia  
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    	American Journal of Neuroradiology December 2015, 36 (12) 2214-2218; DOI: https://doi.org/10.3174/ajnr.A4455 
  
  
  

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Print ISSN: 0195-6108 Online ISSN: 1936-959X