Imaging the ocular motor nerves.

Abstract:

:The ocular motor nerves (OMNs) comprise the oculomotor, trochlear and the abducens nerves. According to their course, they are divided into four or five anatomic segments: intra-axial, cisternal, cavernous and intra-orbital and, for the abducens nerve, an additional interdural segment. Magnetic resonance imaging is the imaging method of choice in the evaluation of the normal and pathologic ocular motor nerves. CT still plays a limited but important role in the evaluation of the intraosseous portions at the skull base and bony foramina. We describe for each segment of these cranial nerves, the normal anatomy, the most appropriate image sequences and planes, their imaging appearance and pathologic conditions. Magnetic resonance imaging with high magnetic fields is a developing and promising technique. We describe our initial experience with a Phillips 7.0T MRI scanner in the evaluation of the brainstem segments of the OMNs. As imaging becomes more refined, an understanding of the detailed anatomy is increasingly necessary, as the demand on radiology to diagnose smaller lesions also increases.

journal_name

Eur J Radiol

authors

Ferreira T,Verbist B,van Buchem M,van Osch T,Webb A

doi

10.1016/j.ejrad.2009.05.066

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

314-22

issue

2

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(10)00065-3

journal_volume

74

pub_type

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