Projection radiography refers to the many “conventional” X-ray studies (e.g., dental, chest, broken bones...) in which X

photons transmitted through the body are recorded on film or detected electronically. Typically the films and digital images

viewed directly by the radiologist, usually with no or minimal additional processing. This is in contrast to computed tomogra

where the “raw data” is nearly uninterpretable, and sophisticated computer algorithms are needed to form cross-sectional im

from the measurements.