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CT Petrous
Mohamed Wael Samir MD
Prof. of Neurosurgery
Ain Shams University
Superior surface of petrous bone
Trigeminal depression
Arcuate eminence
Medial surface of petrous bone
IAM
Subarcuate fossa & A
Cochlear canaliculus
Vestibular aqueduct
Jugular foramen
Arcuate eminence
(SSC)
Trigeminal impression
Petro occipital suture
Trigeminal impression
Arcuate eminence
(SSC)
IAM
PSC
IAcanal
PSC
LSC
vestibule
Epitympanum
Mastoid antrum
Middle ear cavity with Malleus & incus
Tympanic segment of facial nerve
vestibulePSC
Cochlea
IAcanal
Labrynthine segment of facial nerve
Meatal segment of facial nerve
Vestibular aqueduct
Cochlea
Endolyphatic sac
Middle ear
External canal
Cochlear canaliculus
Cochlea
Jugular foramen
Middle ear
External canal
Pharyngotympanic tube (auditory tube)
Carotid canalCarotid canal
Carotid canal
Pharyngotympanic tube (auditory tube)
Jugular foramen
Neural compartment
Vascular compartment
Fallopian Tube
Pontine segment: Meatal segment: labyrinthine segment: tympanic or horizontal : mastoid or vertical segment: Extratemporal segment
Tympanic segment of facial nerve
Labrynthine segment of facial nerve
Meatal segment of facial nerve
Meatal segment of facial nerve
Labrynthine segment of facial nerve
Tympanic segment of facial nerve
Coronal Cuts
TMJ
Carotid canal (vertical segment)
External auditory canal
Middle earCochlea
Middle ear bony ossicles
SCC
LCC
Vestibule
Labrynthine segment
Meatal segment
Quiz
Quiz
Quiz
Quiz
Carotid canalTMJ
Quiz
Quiz
References
Hugh D. Curtin, James D. Rabinov and Peter M. Som (2003): Central Skull Base: Embryology Anatomy, and Pathology in Central skull base in Head and Neck Imaging. Peter M. Som & Hugh D. Curt (edit) Mosby, Inc. St. Louis, Chapter 12 FOURTH EDITION. Volume one 785- 863
Thank You
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