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Figure 12. Normal anatomy of the osseous neural canals for the facial and superior vestibular nerves. Three-dimensional VR CT image (superior view) shows the bony canal for the facial nerve (FN) dissected in its proximal portion at the anterosuperior aspect of the internal auditory canal (IAC). The bony canal for the superior vestibular nerve (SV) lies posterior to the facial nerve canal and extends to the vestibule (Ve).
