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Related to arcuate eminence: petrous
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The CT will identify any air cells above the SSC, the location of the arcuate eminence and its relationship to the SSC, and any unusual anatomic variations, such as an IAC located more posteriorly than usual.
AE superior: The distance by which the arcuate eminence (AE) was superior to the superior semicircular canal (SSC) dome.
The elevation of the dura allowed for the visualization of the greater superficial petrosal nerve anteriorly, the arcuate eminence, the superior semicircular canal, and the roof of the middle ear (figure 3).