Passageway through which the optic nerves pass, located
at the most posterior portion or apex pf the bilateral cone-
shaped orbits of the face.
orbitomeatal line (OML)
Line that connects the external (outer) canthus of the eye
and the auditory meatus (EAM).
The two cone-shaped cavities of the facial bones,
orbits (bilateral orbits)
containing the vital organs of sight and associated nerves
and blood vessels.
Posterior-anterior projection; a projection in which the X-
ray beam enters a posterior surface and exits an anterior
An anatomical landmark, such as the ASIS, used for
Pertaining to the walls of a cavity; located near the parietal
bone, as in the parietal lobe.
Patient alignment and the part to film reference (PFR).
Refers to the sole of the foot.
Used in reference to the body part closest to the film or the
surface on which the patient is lying. Also used to describe
a general body position.
Refers to the back part of the body or of an organ;
synonymous with dorsal. Ex: For an axial calcaneus the
part will be placed on the posterior surface.
Fracture of the lower part of the fibula, with serious injury
of the lower tibial articulation, usually a chipping off of a
portion of the medial malleolus, or rupture of the medial
ligament; called also a Dupoytren's Fracture.
Refers to the path of the X-ray beam, projecting an image
on the radiographic film.
Near the source or beginning part closer to the trunk, as in