The x-ray tube potential determines the quality of x-rays. What effect does it have?

The x-ray tube potential, also known as the kilovolt peak (kVp), plays a crucial role in determining the quality of the x-rays produced. Quality, in this context, refers to the energy and penetrating ability of the x-ray photons generated. A higher potential difference across the tube leads to greater acceleration of electrons toward the target material, resulting in the production of high-energy x-ray photons. These high-energy photons have a greater ability to penetrate tissues, which is especially important for diagnostic imaging in order to obtain clear and informative images.

In contrast, lower potential differences produce lower-energy x-rays that are less capable of penetrating tissues and are typically filtered out by the body, resulting in images that may lack clarity or diagnostic value. Therefore, the effect of the x-ray tube potential is directly related to the quality of the x-rays produced, making it a vital parameter to consider in the field of radiology.