The phosphor layer of the computed radiography (CR) imaging plate is primarily composed of which materials?

The phosphor layer of the computed radiography (CR) imaging plate is primarily composed of barium fluorohalides doped with europium activators. This material is critical because it has the unique ability to absorb and store energy from x-ray exposure, which can then be released as visible light during the readout process. Barium fluorohalides offer high sensitivity and a good level of image quality, making them suitable for effective image capture in CR systems. The addition of europium as an activator is essential as it enhances the efficiency of the phosphorescent properties, allowing the stored energy to be released more effectively when stimulated with a laser during the scanning process. This characteristic makes the phosphor layer critical to the overall functionality and performance of computed radiography.