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Figure 9. Three-dimensional VR CT image (semiopaque windowing) shows the inner ear impressions produced on the medial wall of the tympanic cavity. The prominence produced by the anterior limb of the lateral semicircular canal (LSCC) is seen posteriorly, and the prominence produced by the facial nerve canal (FN) is seen anteriorly. The prominence produced by the curved terminus of the septum canalis musculotubari (SCM) is seen superior and anterior to the oval window (OW). The septum canalis musculotubari serves as the landmark for the geniculate ganglion. The prominence produced by the cochlear promontory (CoP) lies inferior and slightly anterior to the oval window.
