Which imaging technique retrieves the image by scanning a phosphor plate with a laser light?

Which imaging technique retrieves the image by scanning a phosphor plate with a laser light?

• A. Direct Digital Radiography
• B. Film-Screen Radiography
• C. Computed Radiography
• D. Phosphor Plate Imaging

Answer: (C)

The image is retrieved by scanning a phosphor plate with a laser light, which is characteristic of Computed Radiography. In this method, exposed phosphor plates store the X-ray energy as a latent image. When the plate is later scanned by a laser, the stored energy is released as light (photostimulated luminescence). The emitted light is collected and converted into a digital image, and the plate can be erased and reused. This contrasts with Direct Digital Radiography, where a digital detector provides an immediate image without a scanning step, and with Film-Screen Radiography, which uses film that must be developed chemically. Phosphor Plate Imaging describes the same stored-plate concept, but the standard term that emphasizes the readout process is Computed Radiography.

The image is retrieved by scanning a phosphor plate with a laser light, which is characteristic of Computed Radiography. In this method, exposed phosphor plates store the X-ray energy as a latent image. When the plate is later scanned by a laser, the stored energy is released as light (photostimulated luminescence). The emitted light is collected and converted into a digital image, and the plate can be erased and reused.

This contrasts with Direct Digital Radiography, where a digital detector provides an immediate image without a scanning step, and with Film-Screen Radiography, which uses film that must be developed chemically. Phosphor Plate Imaging describes the same stored-plate concept, but the standard term that emphasizes the readout process is Computed Radiography.