What effect does increasing KVP have on a radiograph image?

Increasing kilovolt peak (KVP) in radiography has a significant impact on the quality of the radiographic image. Higher KVP settings enhance the penetrating power of the X-rays produced. This results in an increase in the overall exposure of the radiographic image. When KVP is increased, it allows more X-rays to pass through the tissues being examined, which generally leads to a darker image on the film or digital receptor.

The increase in darkness is due to more photons reaching the imaging receptor, which translates to a higher optical density on the film—thus making it appear too dark. Higher KVP also reduces the contrast on the image, which can sometimes obscure subtle details, but primarily this increase creates a denser image.

In summary, the correct choice reflects the outcome of increasing KVP, which typically results in a darker radiographic image due to enhanced penetration and exposure of the X-rays.