X-RAY ORBITS PA VIEW PROCEDURE

To get a clear orbits (postero-anterior) image of the skull and demonstrate pathology such as skull fractures (orbits) with medial and lateral displacement. Mandible fractures are seen in postero-anterior view. In pediatrics, this perspective is utilized to reduce the equivalent dose to the eye's lens.

This view is useful in assessing:

• Orbits
• Internal auditory meatus
• Skull fracture
• Paget disease
• Neoplastic change
• Frontal bone
• Ethmoid and frontal sinus
• Structure seen in dental region
• Mastoid sinus
• The sphenoid has larger and smaller wings.

Part positioning

• The patient is in a seating position in front of a vertical detector.
• Both forehead and nose are pressed against the IR and touching the detector.
• At a right angle to the IR, there is an orbito-metal line.
• The Petrous ridge is below the orbits

Central ray

• At the level of Nasion, the central ray is pointed perpendicular to the Bucky along the medial sagittal plane.
• Image must be inclusive of the vertex superiorly and the occipital bone’s base inferiorly.