ABSTRACT
The reader should have an understanding of the basic principles of conventional radiography in which photographic methods capture radiographic images. Typically, for planar x-ray imaging, a patient is positioned between an x-ray source and a lm/ screen cassette. e cassette contains an intensifying screen that, when exposed to radiation, emits light that exposes the lm. e lm is developed and viewed by a radiologist. A lm is a multipurpose component used for image acquisition, viewing, and archiving. Increasingly planar radiographs are captured, processed, displayed, and stored digitally rather than using lm.
