How does a Photo-Stimulable Phosphor (PSP) function in imaging?

Photo-Stimulable Phosphor (PSP) technology is integral to digital imaging, particularly in radiography. The operation of a PSP involves capturing and storing latent images. When the PSP plate is exposed to X-rays, it absorbs the radiation and stores the energy in the form of a latent image. This stored image can remain for a certain period until the plate is processed.

During processing, a laser scans the PSP plate, releasing the stored energy in the form of light, which is then converted into a digital signal for imaging. This storing capability allows for flexibility in the timing of image processing, enabling the operator to work efficiently without the need to immediately transfer the image to a digital format.

In contrast, the other options do not accurately describe the function of a PSP. While PSP plates are involved in the imaging process, they do not emit radiation directly, enhance the image during exposure, or immediately transfer the image to a digital format. The fundamental principle of a PSP lies in its ability to store the image until the appropriate processing can take place, making this the correct choice.