PMID: 20643038Jul 21, 2010Paper

Study of neurovascular contact in essential hemifacial spasm: an example of CISS sequence and magnetic resonance angiography

Neurología : publicación oficial de la Sociedad Española de Neurología
M Gorriño AnguloN Bermejo Espinosa

Abstract

The purpose of this article is to assess the validity of the magnetic resonance imaging (MRI) CISS 3D sequence associated with 3D time of flight (TOF) angiographic sequence in order to detect neurovascular contact (NVC) between the facial nerve and neighbouring arteries in patients with essential hemifacial spasm (HFS) and to determine the relationship between HFS symptoms and NVC and NVC image features (type, number and site). We prospectively enrolled 120 cerebellopontine angle (CPA) MRI studies, 44 cases with HFS symptoms and 76 which were asymptomatic (controls), using axial T2-weighted (CISS) and axial 3D TOF series with associated Maximal intensity (MIP) reconstructions. Prior TOF angiographic studies were available for 56 cases without associated CISS images and the results obtained from that study were compared with the results of the current study. The diagnostic values obtained significantly favoured the protocol used in this study, which demonstrated a sensitivity of 77.27% and a specificity of 75%. There was a statistically significant relationship between the presence of NVC and HFS symptoms (p<0.0001). Only one statistically significant relationship was found between facial nerve displacement (in type of NVC) and ...Continue Reading

References

Jan 1, 1989·Journal of Neurosurgery·C B Adams
Jan 1, 1997·Neuroradiology·N GirardC Raybaud
May 1, 1997·The British Journal of Radiology·P HeldJ Strutz
Sep 15, 2006·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Gerard E BoyleJames F Meaney
Jul 1, 1947·Journal of Neurosurgery·E CAMPBELL, C KEEDY

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