CoreFree
Projections, positions and views
Projection is the path of the central ray; position is how the patient is placed; view is the image.
The rule
A projection describes the path of the central ray from where it enters the body to where it exits, such as AP or PA. A position describes how the patient is physically placed, such as supine, erect, left lateral, or RAO. A view describes the body part as seen from the image receptor and is used only to describe a finished image.