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Accuracy of high-resolution computed tomography in locating facial nerve injury sites in temporal bone trauma

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

In this study, high-resolution, multislice computed tomography findings are compared with surgical findings in terms of the fracture location in patients with traumatic facial paralysis. Patients with traumatic facial paralysis with grade VI House-Brackmann scale who met the criteria for surgical decompression between 2008 and 2012 were included in this study. All the patients underwent a multislice high-resolution, multislice computed tomography (HRCT) using 1-mm-thick slices with a bone window algorithm. The anatomical areas of the temporal bone (including the Fallopian canal) were assessed by CT and during the surgery (separately by the radiologist and the surgeon), and fracture line involvement was recorded. Forty-one patients entered this study. The perigeniculate area was the most commonly involved region (46.34 %) of the facial nerve. The sensitivity and specificity of HRCT to detect a fracture line seems to be different in various sites, but the overall sensitivity and specificity were 77.5 and 77.7 %, respectively. Although HRCT is the modality of choice in traumatic facial paralysis, the diagnostic value may differ according to the fracture location. The results of HRCT should be considered with caution in certain areas.

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Acknowledgments

This study was the postgraduate thesis of Shirin Irani which was approved in the faculty of medicine in Mashhad University of Medical Sciences. We thank staff of the Otolaryngology Department of Ghaem Hospital and the Radiology Department of Imam Reza Hospital for their assistance. The authors also thank Dr. Kazem Heidari for helping in data analysis.

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Authors and Affiliations

  1. Department of Otorhinolaryngology, Ghaem Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Ahmadabad Avenue, Mashhad, Iran

    Mohsen Rajati & Shirin Irani

  2. Vascular and Endovascular Surgery Research Center, Imam Reza Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

    Masoud Pezeshki Rad

  3. Department of Otorhinolaryngology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran

    Mohammad Taghi Khorsandi & Masoud Motasaddi Zarandy

Authors
  1. Mohsen Rajati
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  2. Masoud Pezeshki Rad
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  3. Shirin Irani
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  4. Mohammad Taghi Khorsandi
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  5. Masoud Motasaddi Zarandy
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Correspondence to Shirin Irani.

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Rajati, M., Pezeshki Rad, M., Irani, S. et al. Accuracy of high-resolution computed tomography in locating facial nerve injury sites in temporal bone trauma. Eur Arch Otorhinolaryngol 271, 2185–2189 (2014). https://doi.org/10.1007/s00405-013-2709-4

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  • DOI: https://doi.org/10.1007/s00405-013-2709-4

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