The radiographic image is formed by which of the following?

The radiographic image is formed by which of the following?

• A. Exit rays striking the image receptor
• B. Laser light
• C. Cosmic rays
• D. Electrons and heat

Answer: (A)

The image is formed when the exit rays strike the image receptor. After passing through the patient, the X-rays that emerge carry information about the varying densities of tissues. The receptor then converts the energy of those exit (remnant) rays into an image, whether on film or a digital detector. Laser light is used for reading or erasing storage phosphor plates in some systems, but it does not create the radiographic image during exposure. Cosmic rays don’t play a role in diagnostic radiography, and while electrons and heat in the X-ray tube generate the photons, the actual image results from the exit rays striking the receptor.

The image is formed when the exit rays strike the image receptor. After passing through the patient, the X-rays that emerge carry information about the varying densities of tissues. The receptor then converts the energy of those exit (remnant) rays into an image, whether on film or a digital detector. Laser light is used for reading or erasing storage phosphor plates in some systems, but it does not create the radiographic image during exposure. Cosmic rays don’t play a role in diagnostic radiography, and while electrons and heat in the X-ray tube generate the photons, the actual image results from the exit rays striking the receptor.