Imaging of Cranial Nerves

Objective: In this study we present our experience in imaging and image processing of cranial nerve anatomy of the cranial nerves V-XI. Material and Methods: We show the technique of imaging and image processing by high-resolution magnetic resonance imaging and threedimensional (3D) visualization by direct volume rendering. The cranial nerve anatomy is visualized referring the nerval root exit/entry zone, anatomical course within the cisterns of the posterior cranial fossa and the corresponding vasculature. Patients with trigeminal neuralgia, hemi facial spasm and gloss pharyngeal neuralgia were studied. Results: With highly-resolute MR imaging and 3D visualization by direct volume rendering the anatomy of the cranial nerves V,VI,VII,VIII, IX,X and XI were delineated non-invasively in the pre- and intra operative setup of the surgical domain. There were no disturbances in anatomical visualization. Conclusion: Cranial nerve imaging by highly resoluted MR imaging and 3D visualization by direct volume rendering gives the opportunity for non-invasive anatomical analysis of cranial nerve topography and corresponding vasculature and brainstem. This contributes for diagnostic and therapeutic decisions and for surgical-anatomical teaching.