Which of the following factors will lead to an increase in scatter radiation during an imaging procedure?

An increase in scatter radiation during an imaging procedure can result from both patient size and kVp.

When considering patient size, a larger patient can lead to increased scatter radiation because their larger volume creates more tissues that can interact with the x-ray beam. This interaction leads to more photons being scattered in different directions, which contributes to the overall scatter radiation detected.

Increasing kVp (kilovolt peak) also plays a significant role in increasing scatter radiation. Higher kVp settings result in more penetrating x-rays, which can pass through denser tissues more effectively. However, with more penetrating rays, there is also a greater probability of interactions occurring within the patient. Specifically, higher-energy photons tend to scatter more than lower-energy photons, which results in an increase in the scatter radiation produced.

Both of these factors—patient size and kVp—increase the amount of scatter radiation. Therefore, the correct conclusion is that both variables contribute to the increase in scatter during an imaging procedure.