3-6.
RIGHT ANGLE RADIOGRAPHIC VIEWING
a. Anteroposterior Projections. Right angle radiographic viewing
involves obtaining a three-dimensional radiographic visualization on a two-dimensional
projection. The height of the projection is obtained superior to inferior (from top to
bottom). The width should be lateral to lateral or side to side.
AP Projections
1. Height: superior to inferior.
2. Width: lateral to lateral.
b. Lateral Projections. For lateral projections, the height is obtained superior
to inferior. The depth of the protection is obtained anterior to posterior (from front to
back).
Lateral Projections
1. Height: superior to inferior.
2. Depth: anterior to posterior.
c. Oblique Projections. For obliques, the body part is rotated off the AP or PA
position. The oblique view is often requested to supplement the AP or PA and lateral
projections. This additional view gives the radiologist a third dimension of the area
being demonstrated. In some cases, the oblique projection may take the place of a
lateral protection.
Oblique Projections
1. Supplement AP/laterals.
2. Takes the place of laterals.
MD0961
3-15