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Abstract

Topographical relationship of the facial and vestibulocochlear nerves in the subarachnoid space and internal auditory canal.

H S Kim, D I Kim, I H Chung, W S Lee and K Y Kim
American Journal of Neuroradiology June 1998, 19 (6) 1155-1161;
H S Kim
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D I Kim
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I H Chung
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W S Lee
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K Y Kim
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Abstract

PURPOSE Our purpose was to investigate the topographical relationship of the facial and vestibulocochlear nerves from the brain stem through the internal auditory canal.

METHODS We dissected 15 formalin-fixed cadaveric heads and performed MR examinations in 35 healthy subjects in order to examine the topographical relationship of the facial and vestibulocochlear nerves. The cadaveric dissections and the in vivo MR imaging findings were compared indirectly.

RESULTS The relationship between the facial and vestibulocochlear nerves showed some variation among individuals and according to the location of the nerves within the cisterns or canal. Near the brain stem, 53% of the vestibulocochlear nerves were partially segmented on MR images. The vestibulocochlear nerve was completely divided into separate nerves only in the most lateral portion of the canal, except in three cadaveric dissections, in which separation of the superior vestibular nerve was seen near the brain stem. The facial and cochlear nerves were of similar size on 36% of the MR images. The superior vestibular nerve was larger than the inferior vestibular nerve on 81% of the MR images.

CONCLUSION The appearance of the facial and vestibulocochlear nerves was variable but followed certain consistent patterns.

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American Journal of Neuroradiology
Vol. 19, Issue 6
1 Jun 1998
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Topographical relationship of the facial and vestibulocochlear nerves in the subarachnoid space and internal auditory canal.
H S Kim, D I Kim, I H Chung, W S Lee, K Y Kim
American Journal of Neuroradiology Jun 1998, 19 (6) 1155-1161;

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Topographical relationship of the facial and vestibulocochlear nerves in the subarachnoid space and internal auditory canal.
H S Kim, D I Kim, I H Chung, W S Lee, K Y Kim
American Journal of Neuroradiology Jun 1998, 19 (6) 1155-1161;
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