Computed Radiography (CR) uses a digital image stored on what before transfer?

Computed Radiography (CR) uses a digital image stored on what before transfer?

• A. Film
• B. Direct digital detector
• C. Image intensifier
• D. Imaging plate

Answer: (D)

In computed radiography, the image is captured on a reusable imaging plate that contains a photostimulable storage phosphor. When X-rays expose the plate, electrons are trapped in higher energy states, forming a latent image that sits on the plate until it’s read. This imaging plate is the storage medium before any digital transfer. In the CR reader, a laser scans the plate and releases the stored energy as light; the emitted light is detected, converted into a digital signal, and then transferred to the computer for processing and viewing. The plate is erased after read so it can be reused. The other options don’t fit CR: film is used in traditional radiography, a direct digital detector is used in digital radiography (DR) without a plate, and an image intensifier is used in fluoroscopy, not CR.

In computed radiography, the image is captured on a reusable imaging plate that contains a photostimulable storage phosphor. When X-rays expose the plate, electrons are trapped in higher energy states, forming a latent image that sits on the plate until it’s read. This imaging plate is the storage medium before any digital transfer. In the CR reader, a laser scans the plate and releases the stored energy as light; the emitted light is detected, converted into a digital signal, and then transferred to the computer for processing and viewing. The plate is erased after read so it can be reused. The other options don’t fit CR: film is used in traditional radiography, a direct digital detector is used in digital radiography (DR) without a plate, and an image intensifier is used in fluoroscopy, not CR.