Conventional radiographs utilize film and require chemicals to develop the film and display the image. Film can be large and heavy, require a great deal of storage space and are prone to being damaged or lost. In contrast, digital radiographs exist only as computer files. Probably the two biggest advantages of digital radiography are that the image can easily be enhanced and that it enables radiographic images to be stored digitally Being digitally stored allows for the images to be readily retrieved for review and transmitted instantly between colleagues. Other potential advantages include lower running costs, no need for a darkroom, higher throughput, the greater dynamic range of digital detectors and the possibility to reduce X-ray exposure. Processing of digital radiographs is used to improve image quality by reducing noise, removing technical artifacts and optimizing contrast for viewing. Most digital radiography systems are readily incorporated into practices because they can be used with the existing X-ray machine. In the future, all radiography will be digital.
(DR) Digital Radiography
(CR) Computed Radiography
increasingly popular. These contain either a photoconductor/thin-film transistor array or a scintillator/photodiode/thin-film transistor array to capture X-rays and provide the readout. These detectors are directly wired to the user interface and produce images that can be viewed within a few seconds of exposure. Shots requiring multiple views can be obtained efficiently with such systems. Compared to conventional radiography and CR, DR systems are able to produce better quality images at lower X-ray exposures