Marinos Kontzialis MD, Presenter: Nothing to Disclose

Asim F. Choudhri MD, Abstract Co-Author: Nothing to Disclose

Vivek R. Patel MD, Abstract Co-Author: Nothing to Disclose

Prem Subramanian, Abstract Co-Author: Nothing to Disclose

Gary Gallia, Abstract Co-Author: Nothing to Disclose

Masaru Ishii MD, Abstract Co-Author: Nothing to Disclose

Nafi Aygun MD, Abstract Co-Author: Nothing to Disclose

Ari Meir Blitz MD, Abstract Co-Author: Research Grant, B. Braun Melsungen AG

1. On imaging the cranial nerves may be generically divided into segments based on the surrounding tissue (and referred to with the abbreviation CN #.segment). This variation in environment poses particular imaging challenges, influences the differential diagnosis and, when applicable, has implications for neurosurgical approach. 2. High-resolution 3D skull base MRI without and with contrast allows for visualization of the oculomotor nerve along much of its course and may increase sensitivity for abnormalities of the oculomotor nerve in regions that were previously challenging to evaluate. For each segment the high resolution anatomy is described along with important considerations for localization on physical examination and relevant pathologic entities.

Segmental anatomy of the oculomotor nerve: -Nuclear (CN III.a) -Parenchymal fascicular (CN III.b) -Cisternal (CN III.c) -Dural cave (CN III.d) -Interdural (CN III.e) -Foraminal (CN III.f) -Extraforaminal (CN III.g). In this scientific exhibit, we share our experience to date with high resolution imaging of the anatomic segments of the oculomotor nerve and review pathologic conditions relevant to each segment along with important considerations for localization on physical examination.

http://abstract.rsna.org/uploads/2014/14010016/14010016_y7hk.pdf

Kontzialis, M, Choudhri, A, Patel, V, Subramanian, P, Gallia, G, Ishii, M, Aygun, N, Blitz, A, High Resolution 3D Magnetic Resonance Imaging of the Oculomotor Nerve: Segmental Anatomic and Pathologic Considerations.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14010016.html