Final answer:
A small change in kVp at low kVp can have an impact on X-ray imaging. It can affect the energy of the X-ray photons produced, which in turn can influence the penetration of materials and image quality.
Step-by-step explanation:
The impact of a small change in kVp at low kVp can be seen in various situations, such as in x-ray imaging. kVp, or kilovolt peak, is the maximum voltage applied to an X-ray tube. A small change in kVp at low levels can result in differences in the energy of the X-ray photons produced. For example, a slight increase in kVp can lead to higher energy X-ray photons, which can penetrate materials more effectively. Conversely, a small decrease in kVp can result in lower energy X-ray photons, leading to less penetration and potential differences in image quality.