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Petrous Apex
Philip R. Chapman, MD; H. Ric Harnsberger, MD
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TERMINOLOGY

  • Abbreviations

    • Petrous apex (PA), internal carotid artery (ICA), petrooccipital fissure (POF)
  • Definitions

    • Petrous bone: Pyramid-shaped, medial portion of temporal bone (T-bone)
      • Contains inner ear, internal auditory canal (IAC), labyrinthine segment, and anterior genu facial nerve canal and PA
    • PA: Portion of petrous bone that is anteromedial to inner ear and IAC

IMAGING ANATOMY

  • Overview

    • Extent

      • Anatomy Relationships

        ANATOMY IMAGING ISSUES

        • Imaging Recommendations

          • Imaging Pitfalls

            CLINICAL IMPLICATIONS

            • Clinical Importance

              EMBRYOLOGY

              • Embryologic Events

                Related Anatomy
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                Related Differential Diagnoses
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                References
                Tables

                Tables

                TERMINOLOGY

                • Abbreviations

                  • Petrous apex (PA), internal carotid artery (ICA), petrooccipital fissure (POF)
                • Definitions

                  • Petrous bone: Pyramid-shaped, medial portion of temporal bone (T-bone)
                    • Contains inner ear, internal auditory canal (IAC), labyrinthine segment, and anterior genu facial nerve canal and PA
                  • PA: Portion of petrous bone that is anteromedial to inner ear and IAC

                IMAGING ANATOMY

                • Overview

                  • Extent

                    • Anatomy Relationships

                      ANATOMY IMAGING ISSUES

                      • Imaging Recommendations

                        • Imaging Pitfalls

                          CLINICAL IMPLICATIONS

                          • Clinical Importance

                            EMBRYOLOGY

                            • Embryologic Events