CT. Scan ANATOMY of PARANASAL SINUSES Professor Dr.Muhammad Ajmal Dr.Tehmina Nazir HOLY FAMILY HOSPITAL Rawalpindi

CT– AXIAL IMAGES Frontal sinus Orbital cavity Sphenoid bone

Nasal cavity Globe Optic nerve Ethmoid sinuses Medial rectus ….CT AXIAL IMAGES Nasal cavity Globe Optic nerve Ethmoid sinuses Medial rectus Sphenoid sinus Pituitary fossa Dorsum sellae

Globe Nasal septum Ethmoid sinuses Sphenoid sinus Clivus ….CT AXIAL IMAGES Globe Nasal septum Ethmoid sinuses Sphenoid sinus Clivus

Septum Nasolacrimal duct Maxillary sinus Turbinate Zygomatic arch ….CT AXIAL IMAGES Septum Nasolacrimal duct Maxillary sinus Turbinate Zygomatic arch Mandibular condoyle

….CT AXIAL IMAGES Ground lamella Sphenoid recess

CT– CORONAL IMAGES Anterior clinoid process Zygomatic arch Sphenoid sinus septum Nasopharynx Pterigoid plate Mandible

Sphenoid sinus Inferior turbinate Middle turbinate Zygomatic arch ….CT CORONAL IMAGES Sphenoid sinus Inferior turbinate Middle turbinate Zygomatic arch Mandible 8

Orbit Middle turbinate Ethmoid sinuses Inferior turbinate Zygomatic ….CT CORONAL IMAGES Orbit Middle turbinate Ethmoid sinuses Inferior turbinate Zygomatic arch Mandible

Superior oblique Frontal bone muscle Optic nerve Medial rectus ….CT CORONAL IMAGES Frontal bone Optic nerve Medial rectus Lateral rectus Zygomatic arch Inferior rectus Middle turbinate Inferior turbinate Hard palate 10

Frontal sinus Frontal bone Globe Nasal septum Maxillary sinus Inferior ….CT CORONAL IMAGES Frontal bone Globe Nasal septum Maxillary sinus Inferior turbinate

….CT CORONAL IMAGES Frontal sinus Nasal bone Nasal cavity Teeth 12

Superior turbinate Ethmoidal infundibulum Ethmoid bulla Ethmoid bulla ….CT CORONAL IMAGES Superior turbinate Ethmoidal infundibulum Ethmoid bulla Ethmoid bulla Middle turbinate Uncinate process Hiatus semilunaris Inferior turbinate

CT– SAGITTAL IMAGES Frontal bone Orbit Maxillary sinus

Frontal sinus Orbital cavity Inferior orbital fissure Optic nerve ….CT SAGITTAL IMAGES Frontal sinus Orbital cavity Inferior orbital fissure Optic nerve Maxillary sinus 15

….CT SAGITTAL IMAGES Frontal sinus Maxillary sinus Teeth

Frontal sinus Ethmoid sinus Nasal bone Sphenoid sinus ….CT SAGITTAL IMAGES Ethmoid sinus Nasal bone Sphenoid sinus Inferior turbinate Hard palate 17

Frontal sinus Hypophyseal fossa Nasopharynx Clivus Dens of axis ….CT SAGITTAL IMAGES Frontal sinus Hypophyseal fossa Nasopharynx Clivus Dens of axis Atlas;anterior arch

Frontal sinus Ethmoids Sphenoid M.Turbinate Clivus I. Turbinate ….CT SAGITTAL IMAGES Frontal sinus Ethmoids Sphenoid M.Turbinate Clivus I. Turbinate Hard palate 19