An X-ray machine for medical purposes generally consists of an X-ray generator and an X-ray detector to produce diagnostic x-ray images. Detectors can be divided into two major categories:
- imaging detectors (such as photographic plates and X-ray film, now mostly replaced by various digitizing devices like image plates or flat panel detectors)
- dose measurement devices (such as dosimeters used to measure the local radiation exposure, dose, and/or dose rate, for example, for verifying that radiation protection equipment and procedures are effective on an ongoing basis).
Both fixed or mobile x-ray machines (depending on requirement of the imaging centre or hospital) are available.