What is the primary purpose of the PSP layer in computed radiography?

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Multiple Choice

What is the primary purpose of the PSP layer in computed radiography?

Explanation:
The PSP layer’s main job is to store the latent image. When X-rays expose the plate, energy becomes trapped in the photostimulable phosphor within this layer, creating a pattern that mirrors the X-ray attenuation—this is the latent image stored in the PSP layer. Later, a laser in the CR reader stimulates those trapped electrons, releasing the stored energy as light to form the digital image. So, storing the latent image is the key function. The other roles—absorbing X-rays, providing physical support, or emitting X-rays—are not the primary purpose of the PSP layer.

The PSP layer’s main job is to store the latent image. When X-rays expose the plate, energy becomes trapped in the photostimulable phosphor within this layer, creating a pattern that mirrors the X-ray attenuation—this is the latent image stored in the PSP layer. Later, a laser in the CR reader stimulates those trapped electrons, releasing the stored energy as light to form the digital image. So, storing the latent image is the key function. The other roles—absorbing X-rays, providing physical support, or emitting X-rays—are not the primary purpose of the PSP layer.

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