Petrous Apex Diagram. Articulates with the posterior aspect of the greater wing of the sphenoid and basilar occiput. Most petrous apex lesions are diagnosed incidentally on mris obtained for other reasons such as headaches.
The tentorium cerebelli contributes to the formation of several dural venous. Axial ct images of the right temporal bone obtained at the level of the iac a and slightly more inferiorly at the level of the. The petrous temporal bone has a pyramidal shape with an apex and a base as well as three surfaces and angles.
Download scientific diagram normal petrous apex at ct.
Preoperative axial ct angiogram image a shows the expansile petrous apex granuloma asterisk behind the petrous ica arrowhead. Between the portion of the temporal bone containing the inner ear and the clivus is the apex of the petrous temporal bone a structure that can occasionally be pneumatized with the possible. The petrous temporal bone has a pyramidal shape with an apex and a base as well as three surfaces and angles. Forms internal border of the carotid canal and the posterolateral boundary of the foramen lacerum.