Which of the following components is not utilized for CR systems?

Which of the following components is not utilized for CR systems?

• A. IP reader/digitizer
• B. IP
• C. developer
• D. protective layer

Answer: (C)

In computed radiography, imaging relies on a reusable plate—the IP—that stores the x-ray energy in its phosphor layer. After exposure, the plate goes into a CR reader where a laser scans it and the stored energy is released as light. This light is detected and converted into a digital image. There is no chemical processing step in CR; unlike traditional film-screen radiography, which uses a chemical developer to create the visible image, CR relies on electronic reading and digitization. The IP reader/digitizer is the device that converts the plate's signal into a digital image, the IP is the plate itself, and the protective layer is part of that plate’s construction to protect the phosphor layer. Therefore, the component not used in CR systems is the developer.

In computed radiography, imaging relies on a reusable plate—the IP—that stores the x-ray energy in its phosphor layer. After exposure, the plate goes into a CR reader where a laser scans it and the stored energy is released as light. This light is detected and converted into a digital image. There is no chemical processing step in CR; unlike traditional film-screen radiography, which uses a chemical developer to create the visible image, CR relies on electronic reading and digitization. The IP reader/digitizer is the device that converts the plate's signal into a digital image, the IP is the plate itself, and the protective layer is part of that plate’s construction to protect the phosphor layer. Therefore, the component not used in CR systems is the developer.