Which of the following are advantages of high kVp technique?

• A. 1 and 2
• B. 1 and 3
• C. 2 and 3
• D. 1, 2, and 3

Answer: (D)

High kVp means higher energy photons, so the X-ray beam penetrates more easily. That lets you achieve adequate receptor exposure with a lower mA and a shorter exposure time, which reduces the patient’s radiation dose and helps minimize motion blur. The greater penetrating power also improves image quality for thicker or denser body parts, making diagnostic detail possible where a lower kVp might fail. Because of these effects, all three statements describing advantages are true: less dose, shorter exposure times, and better penetration for larger patients. Keep in mind that high kVp also lowers subject contrast and increases scatter, which is a trade-off to manage.