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Bony Orbit and Foramina

Bony Orbit and Foramina

H. Christian Davidson, MD; Daniel E. Meltzer, MD

TERMINOLOGY

Abbreviations
- Bones, foramina, and fissures
  - Greater wing of sphenoid (GWS)
  - Lesser wing of sphenoid (LWS)
  - Optic canal (OpC)
  - Superior orbital fissure (SOF)
  - Inferior orbital fissure (IOF)
  - Foramen rotundum (FR)
  - Foramen ovale (FO)
  - Vidian canal (VC)
  - Pterygopalatine fossa (PPF)
- Cranial nerves
  - Optic nerve (CNII)
  - Oculomotor nerve (CNIII)
  - Trochlear nerve (CNIV)
  - Trigeminal nerve (CNV)
    - Ophthalmic branch (V1)
    - Maxillary branch (V2)
    - Mandibular branch (V3)
  - Abducens nerve (CNVI)
- Vessels
  - Ophthalmic artery (OA)
  - Superior ophthalmic vein (SOV)
  - Inferior ophthalmic vein (IOV)
Definitions
- MPR: 2D multiplanar reformations

GROSS ANATOMY

Bones of Orbit

IMAGING ANATOMY

Anatomy Relationships
Internal Contents

ANATOMY IMAGING ISSUES

Questions
Imaging Recommendations
Imaging Pitfalls

Related Anatomy

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Related Differential Diagnoses

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References

Tables

Tables

TERMINOLOGY

Abbreviations
- Bones, foramina, and fissures
  - Greater wing of sphenoid (GWS)
  - Lesser wing of sphenoid (LWS)
  - Optic canal (OpC)
  - Superior orbital fissure (SOF)
  - Inferior orbital fissure (IOF)
  - Foramen rotundum (FR)
  - Foramen ovale (FO)
  - Vidian canal (VC)
  - Pterygopalatine fossa (PPF)
- Cranial nerves
  - Optic nerve (CNII)
  - Oculomotor nerve (CNIII)
  - Trochlear nerve (CNIV)
  - Trigeminal nerve (CNV)
    - Ophthalmic branch (V1)
    - Maxillary branch (V2)
    - Mandibular branch (V3)
  - Abducens nerve (CNVI)
- Vessels
  - Ophthalmic artery (OA)
  - Superior ophthalmic vein (SOV)
  - Inferior ophthalmic vein (IOV)
Definitions
- MPR: 2D multiplanar reformations

GROSS ANATOMY

Bones of Orbit

IMAGING ANATOMY

Anatomy Relationships
Internal Contents

ANATOMY IMAGING ISSUES

Questions
Imaging Recommendations
Imaging Pitfalls