Final answer:
Increasing kVp decreases the contrast of an X-ray image.
Step-by-step explanation:
In radiology, kVp (kilovolt peak) is a factor that affects the contrast of an X-ray image. Contrast refers to the difference in density between different areas of the image. Increasing kVp leads to a decrease in contrast. This is because higher kVp increases the energy of the X-ray photons, resulting in greater penetration through the body tissue and less absorption.
Let's consider an example: if we have an X-ray image of a chest, with low kVp settings, the image will have a higher contrast, with clearly defined black and white areas. However, if we increase the kVp, the image will display lower contrast, with more gray areas.