What does kilovolt peak (kVp) control in radiographic imaging?

Kilovolt peak (kVp) primarily controls the quality and quantity of radiation in radiographic imaging. The kVp setting determines the maximum voltage applied across the x-ray tube, which influences the energy of the x-ray photons produced. Higher kVp settings result in x-rays with greater energy, leading to more penetrating power, which is essential for imaging denser body parts or tissues. This higher energy also increases the overall quantity of x-rays emitted, which can affect the exposure levels and the resulting image density.

When kVp is increased, the ability to penetrate through tissues improves, allowing for a clearer image with better contrast between different structures within the body. This is particularly important for differentiating between various types of tissues or detecting pathologies. Therefore, mastering the control of kVp is crucial for producing high-quality radiographic images and achieving optimal diagnostic results.