What is a key characteristic of PSP imaging relative to CCD/CMOS?

• A. PSP requires scanning, and ambient light or a dark room
• B. PSP provides immediate acquisition and display
• C. CCD/CMOS requires scanning
• D. PSP has higher initial costs

Answer: (A)

PSP imaging relies on a reusable storage phosphor plate that records the image and must be read out later. The image isn’t available immediately because you need a dedicated plate reader that scans the plate with a laser to stimulate the stored phosphor and release light, which is then captured and converted to a digital image. Because the stored signal can be degraded or erased by ambient light, handling the plate requires controlled lighting (often a dark or subdued environment) until it’s scanned. This readout delay and light-sensitivity are the defining differences from CCD/CMOS detectors, which capture and display the image directly at the time of exposure. While initial costs can vary by system, the key distinction here is the need to scan PSP plates to obtain the image.