CT Skull Base

Mohamed Wael Samir MD

Prof. of Neurosurgery

Ain Shams University

Endocranial side of Anterior cranial fossa

crista galli

cribriform plate

foramen caecum

optic canal Anterior clinoid

Sauperior orbital fissure

Planum sphenoidal

Endocranial side of Middle cranial fossalesser sphenoid wings

Greater sphenoid wings SOF

Squamous temporal supe

rior

surf

ace

of

petr

os

FR

FO

FS

FV

FL

maxillary strut

Endocranial side of Posterior cranial fossa

dorsum sellæ

Basilar occipital

Foramen magnum

Post

erio

r pe

trou

s

Squamous occipital

Jugular tubercle

Condylar canal

Hypoglossal canal

CT of Anterior Cranial FosseForamen caecum

Crista galliCribriform

plate & Fovea ethmoidal

Planum sphenoidal

Anterior clinoid

Optic foramen

Optic Foramen and Orbital Fissures

1 2 3

CT of Middle Cranial Fosse

Foramen ovale

Foramen spinosum

Foramen lacerum

Foramen Rotundum

SOF

Vidian Canal

Carotid Canal

CT of Posterior Cranial Fosse

Jugular foramen

Hypoglossal canal

Hypoglossal Canal

CT at Level of Infra-temporal fosse

cond

yle

Foramen Magnum

Hypoglossal Canal

The condylar fossa

posterior condylar canal

Jugular Foramen

styloid process

stylomastoid foramen

Carotid canal

Carotid ridge

Tympano mastoid fissure

CT at Level of Infra-temporal fosse

PterygoidZygoma Pterygopalatin

e fossa

Vomer

Mastoid Occipital bone Occipitomastoid fissure

Mandibular condyle

IOF

CT at Level of Infra-temporal fosse

Styloid processOccipital condyle

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

Quiz

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