In order to achieve increased contrast and equal identity for a radiograph, which settings would you use?

To achieve increased contrast and equal identity in a radiograph, reducing the kilovolt peak (KVP) by 15 while doubling the exposure time is an effective approach. Decreasing the KVP lowers the energy of the x-ray beam, which increases the contrast in the resulting image. Higher contrast means that there will be a greater difference between the various densities on the radiograph, making it easier to distinguish between different anatomical structures.

Additionally, by doubling the exposure time, you compensate for the reduction in the quantity of x-rays produced due to the lower KVP. This ensures that the film or digital sensor receives sufficient radiation to produce a diagnostic-quality image. The combination of these changes allows for improved visibility of details within the radiograph while maintaining appropriate exposure levels.

By adjusting the settings in this manner, you effectively balance the need for contrast and identity, resulting in a radiograph that is both informative and clear.