title: High-Resolution 3D Magnetic Resonance Imaging of the Sixth Cranial Nerve: Anatomic and Pathologic Considerations by Segment.
abstract: BACKGROUND
  Weakness of the sixth cranial nerve is the most common cause of an ocular motor cranial nerve palsy. It is often difficult to identify a corresponding abnormality on neuroimaging to correlate with the clinical examination.
  
  
  METHODS
  High-resolution 3D skull base magnetic resonance imaging (MRI) allows for visualization of the sixth nerve along much of its course and may increase sensitivity for abnormalities in regions that previously were challenging to evaluate. In this review, the authors share their experience with high-resolution imaging of the sixth nerve.
  
  
  RESULTS
  For each segment, anatomic features visible on high-resolution imaging are described along with relevant pathologic entities.
  
  
  CONCLUSIONS
  We present a segmental approach to high-resolution 3D MRI for evaluation of the sixth nerve from the nuclear to the orbital segment.
authors.affiliation: Division of Neuroradiology (MK, NA, AMB), Department of Radiology and Radiologic Science, Johns Hopkins Medical Institutions, Baltimore, Maryland; Department of Radiology (AFC), University of Tennessee, Memphis, Tennessee; Department of Ophthalmology (VRP), University of Southern California, Los Angeles, California; Department of Ophthalmology (PSS), Johns Hopkins Medical Institutions, Baltimore, Maryland; Department of Otolaryngology-Head and Neck Surgery (MI), Johns Hopkins Medical Institutions, Baltimore, Maryland; and Department of Neurosurgery (GLG), Johns Hopkins Medical Institutions, Baltimore, Maryland.
authors.forename: Marinos
authors.initials: M
authors.lastname: Kontzialis
authors.forename: Asim F
authors.initials: AF
authors.lastname: Choudhri
authors.forename: Vivek R
authors.initials: VR
authors.lastname: Patel
authors.forename: Prem S
authors.initials: PS
authors.lastname: Subramanian
authors.forename: Masaru
authors.initials: M
authors.lastname: Ishii
authors.forename: Gary L
authors.initials: GL
authors.lastname: Gallia
authors.forename: Nafi
authors.initials: N
authors.lastname: Aygun
authors.forename: Ari M
authors.initials: AM
authors.lastname: Blitz
mesh_terms: D000010:Abducens Nerve / Q000033:anatomy & histology*; D020434:Abducens Nerve Diseases / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging