Abstract #2296
            Surgical validation of extracranial facial nerve magnetic resonance tractography
                      Arnaud ATTYE                     1,2                    , Alexandre KARKAS                     3                    , 						Irene TROPRES                     4                    , Laurent LAMALLE                     4                    , 						Felix RENARD                     5                    , Georges BETTEGA                     6                    , 						Christian RIGHINI                     3                    , and Alexandre KRAINIK                     5          
            
            1
           
           Neuroradiology, Grenoble University 
						Hospital, Grenoble, Rhne Alpes, France,
           
            2
           
           UMS 
						IRMaGe, Grenoble, Rhne Alpes, France,
           
            3
           
           Otolaryngology, 
						Grenoble University Hospital, Rhne Alpes, France,
           
            4
           
           UMS 
						IRMaGe, Rhne Alpes, France,
           
            5
           
           Neuroradiology, 
						Grenoble University Hospital, Rhne Alpes, France,
           
            6
           
           Maxillofacial 
						Surgery, Grenoble University Hospital, Rhne Alpes, 
						France
          
            
          Magnetic resonance tractography of the cranial nerves is 
						a promising tool. Yet, in order to validate the quality 
						of quantitative data yielded from this technique, the 
						course of nerve fibres must be confirmed surgically. 
						This prospective study is the first work that assessed 
						the feasibility and reliability of extracranial facial 
						nerve magnetic resonance tractography using in vivo 
						data, based on surgical photos and per-operative nerve 
						stimulation. We successfully identified facial nerve, in 
						relation to the parotid tumors, in all patients and 
						performed quantitative microstructural analysis for 52 
						facial nerves. The outcome would be to aid future 
						medical studies examining nerve dysfunction.
         
				
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