Pathology of base of skull and sphenoid sinuses
Base of skull, sutures sphenoid sinus
The patient is sitting AP position.
The infra-orbitalmeatal line should be parallel to the IR by vertex of the skull is centered to the IR by raising the patient’s head & chin.
The mid sagittal plane is perpendicular to the IR.
Size: 10’’x12’’ Orientation: Landscape
Central ray is towards the point midway between external auditory meatus and the point midway between angles of mandible.
The central ray is perpendicular to IR.
Collimate laterally to include soft tissues and lateral border of skull, superiorly include mandible and inferiorly include occiput of the skull