Peak kilovoltage, commonly referred to as peak kV, is an important term in the field of X-ray imaging. It is the highest voltage used during the X-ray exposure, which ultimately affects the quality of the image produced. Synonyms for peak kilovoltage include peak tube voltage, maximum tube potential, and highest voltage setting. These terms are interchangeable and used to indicate the maximum voltage output of the X-ray tube. Other related terms that are often used include penetration power, X-ray voltage, and peak accelerating voltage. These synonyms all refer to the same concept and help to provide a clearer understanding of peak kilovoltage and its importance in producing high-quality X-ray images.