What is the difference between kev and kvp

These X-rays typically cover a large energy range. In this study, we compared poly-energetic X-ray spectra against estimated equivalent effective mono-energetic beams with the same number of simulated photons for small animal CT imaging and dosimetry applications. Two poly-energetic X-ray spectra were generated from a tungsten anode at 50 and kVp. The corresponding effective mono-energetic beams were established as 36 keV for the 50 kVp spectrum and This will change depending on the examination though.

Hence the term "kVp" stands for "kilovolts peak", because it defines the top keV value the x-rays can have. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. What is the relationship between keV and kVp? Ask Question. Asked 7 years, 8 months ago. Absorbed dose is created from radiation that does not pass through the body.

That is the lower ranges of keV, typically 15keV to approximately 45keV. Scatter radiation is primarily made up of this range of keV and the core material needs to be at its most efficient and effective in this range to be truly effective in protecting the user. Given the principles above, and taking the example of fluoroscopy, which typically uses between 60kV to 70kV across the lamp to generate the X-rays, the main beam will have keV energies from 15keV to approximately 65keV.

However, the scatter radiation will have energies from 15keV to approximately 45keV. This means that the vast majority of the radiation is in the absorbed dose range as it lacks the penetrating power and will stay in the body of the recipient. Increasing the kVp increases the chances of more scatter or scatter radiation produced. Abbreviation for kiloelectron volts, a unit of energy in diagnostic radiography and nuclear medicine, equivalent to the kinetic energy gained by an electron falling through a potential of 1 volt.

In physics, the electron volt symbol eV ; also written electronvolt is a unit of energy equal to approximately 1. By definition, it is the amount of energy gained by the charge of a single electron moved across an electric potential difference of one volt. It is measured by the number of revolutions per minute rpm that a motor turns when 1V one volt is applied with no load attached to that motor.

A 15 percent increase in Kvp is equal to doubling the mAs. However , if you want to maintain radiographic density by increasing kvp by 15 percent, you need to cut your mass in half. Same goes for decreasing kvp by 15 percent. If you want to maintain radiographic density, you need to double your mAs. A higher density material will attenuate more x-rays than a lower density material.

A higher kVp will make the x-ray beam more penetrating. This will result in less difference in attenuation between the different parts of the subject, leading to lower contrast.