What does 'kVp' stand for in X-ray imaging?

'kVp' stands for kilovolt peak in X-ray imaging. This term refers to the maximum voltage applied across the X-ray tube during an exposure. The peak kilovoltage determines the energy of the X-ray photons produced, which directly influences the penetration power of the X-rays and the overall quality of the image.

A higher kVp results in X-rays with greater energy, allowing them to penetrate dense materials more effectively. This is crucial for producing clearer images of thicker or denser objects, such as metals or bones. The setting of kVp is a key factor in radiographic technique, as it not only impacts image contrast but also alters the exposure time required to obtain a diagnostic quality image.

Understanding kVp is fundamental in radiography because it helps technicians make informed decisions about exposure settings based on the specific requirements of the imaging task at hand.