CAMRT Radiography Practice Exam

What are the two types of target interactions that can produce diagnostic-range x-ray photons?

1. Photoelectric and Compton

2. Bremsstrahlung and Characteristic

3. Nebulization and Ionization

4. Thermal and Chemical

The correct answer is: Bremsstrahlung and Characteristic

The correct answer is that the two types of target interactions that can produce diagnostic-range x-ray photons are Bremsstrahlung and Characteristic interactions. Bremsstrahlung radiation occurs when high-speed electrons are decelerated as they approach the nucleus of a target atom. The interaction with the nucleus causes the electrons to lose energy, which is emitted in the form of x-ray photons. This type of radiation is significant in the production of x-rays, especially in the diagnostic range, because it encompasses a broad spectrum of energies. Characteristic radiation, on the other hand, is produced when an incoming electron displaces an inner-shell electron from a target atom, creating a vacancy. Electrons from higher energy levels then drop down to fill that vacancy, releasing energy in the form of x-ray photons. The energy of the emitted photon corresponds to the difference between the binding energies of the electrons involved, resulting in very specific energies associated with the particular target material. In contrast, the other types mentioned are not responsible for producing diagnostic-range x-ray photons. Photoelectric and Compton interactions are interactions that can occur with x-rays in the patient’s body rather than in the production process. Nebulization and Ionization, as well as Thermal and Chemical interactions, do not