Receptor preparation - PSP uses protective sleeve for each plate.

• A. CCD/CMOS
• B. PSP
• C. Both
• D. Neither

Answer: (B)

Photostimulable phosphor (PSP) plates, used in computed radiography, are light-sensitive and store the latent image until they’re read. Keeping each plate inside its own light-tight protective sleeve protects the stored image from ambient light, prevents dust and scratches, and makes handling safer between exposure and the reader. This per-plate sleeve requirement is specific to PSP plates, because they are removable, reusable imaging plates that must be shielded until scanning. Direct digital detectors like CCD or CMOS are solid-state, integrated into the imaging device, and do not use a separate protective sleeve for each plate, so the PSP-requiring practice distinguishes this receptor type.