Improvement of visualization of the intermediofacial nerve in the temporal bone using 3T magnetic resonance imaging: part 1: the facial nerve.

Authors:
Hartmut Peter Burmeister
Hartmut Peter Burmeister
Institute of Diagnostic and Interventional Radiology
Germany
Peter Schmidt
Peter Schmidt
Institute of Legal Medicine
Germany
Gerd Fabian Volk
Gerd Fabian Volk
Jena University Hospital
Germany
Orlando Guntinas-Lichius
Orlando Guntinas-Lichius
Jena University Hospital
Germany
Jan Sedlacik
Jan Sedlacik
Institute of Diagnostic and Interventional Radiology
Germany

J Comput Assist Tomogr 2009 Sep-Oct;33(5):782-8

Institute of Diagnostic and Interventional Radiology, University HospitalYFriedrich Schiller, University Jena, Erlanger Allee 101, D-07740 Jena, Germany.

Purpose: This study examines the identifiability of the intratemporal motor facial nerve using 3-T and 1.5-T magnetic resonance imaging (MRI).

Methods: Twenty subjects underwent T1- and T2-weighted MRI of the temporal bone. Acquisition was performed using a head coil at 3 and 1.5 T as well as a surface coil at 3 T. Layer thicknesses were 0.6 mm for 3-T and 0.8 mm for 1.5-T MRI. Eight topodiagnostically relevant facial nerve and branch structures were statistically evaluated.

Results: The main trunk could be identified in all examinations. Sequences acquired with a head coil at 3 T yielded statistically significant superiority (P < 0.001) over 3-T surface coil and 1.5-T head coil measurements. The precise identifiability of the smallest structures (eg, stapedial nerve) succeeded best by means of T1-weighted 3-T MRI.

Conclusions: Due to the precise identifiability of the smallest branches, 3-T MRI improves diagnostics particularly with regard to preoperative planning.

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Source
http://dx.doi.org/10.1097/RCT.0b013e31818da6bbDOI Listing

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November 2009
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