What happens when the imaging plate is placed in a reader and scanned with a laser?

What happens when the imaging plate is placed in a reader and scanned with a laser?

• A. The latent energy stored on the plate is released by the laser to produce a readout energy
• B. The energized phosphor is released
• C. The plate becomes colored and forms an image immediately
• D. The plate requires heating to produce an image

Answer: (B)

When the imaging plate has absorbed X-rays, the phosphor stores energy in electron traps. Scanning the plate with a laser stimulates those trapped electrons to return to their ground state and release the stored energy as photons. This light emission, called photostimulated luminescence, is what the reader detects and converts into the digital image. So the key idea is that the energized phosphor releases its stored energy as light when stimulated by the laser, which is exactly what produces the readout signal.

When the imaging plate has absorbed X-rays, the phosphor stores energy in electron traps. Scanning the plate with a laser stimulates those trapped electrons to return to their ground state and release the stored energy as photons. This light emission, called photostimulated luminescence, is what the reader detects and converts into the digital image. So the key idea is that the energized phosphor releases its stored energy as light when stimulated by the laser, which is exactly what produces the readout signal.