The angle of the mandible; the most inferior, posterior, and
lateral points on the external angle of the mandible.
Refers to the direction that the CR travels in relation to the
body part; e.g., for an inferosuperior hip, the CR is horizontal
and enters the inferior portion of the hip. The central ray then
exits the superior surface to the center of the film.
The inferior rim of the orbit (the bony cavity of the skull that
contains the eye).
Line that connects the infraorbital margin and the external
auditory meatus(EAM). It is also referred to as the Reid's
base line of the cranium.
Line that connects the pupils of the eyes. In a true lateral
position, the IPPL must be perpendicular to the table.
The very highest voltage occurring at any time during a
kilovoltage peak (kVp)
electrical cycle. The peak kilovoltage used in making any X-
ray exposure. Primarily controls the penetrating ability of the
Kidney, ureters, bladder; also known as an AP supine
projection. The AP supine or AP upright may be referred to
as the supine KUB or upright KUB, respectively.
Away from the center or away from the midline of the body.
Position in which the part is rotated away from the midline of
Position in which the body is rotated 90 from a true AP or
Lying on the right or left side, as for a lateral coccyx.