Impact On Computed Radiography With The Advent of Digital Radiography
Computed radiography (CR) and digital radiography (DR) are rapidly replacing screen-film imaging systems in many countries. Both are similar in technology except for the image receptor. CR uses photostimulable phosphor (PSP) plates which must be transported to a digital scanner (or reader) and scanned with a laser beam to convert the stored image to a digital array. DR uses a solid-state detector, or a combination of a light emitting phosphor and a digital converter, which produces digital array and image. All other aspects of these two technologies are similar including the computer processing of the digital image, transmission and display of the digital image, and digital image storage. These systems rely on picture archiving and communication systems (PACS) for transmission and storage of the digital images. Digital images are used throughout radiology. They appear as computed radiography, digital radiography, fluoroscopy, computed tomography, magnetic resonance, ultrasou...