CLINICAL MEDICINE

Detailed explanation-1: -A 15% increase in kVp has the same effect as doubling the mAs. A 15% decrease in kVp has the same effect as decreasing the mAs by half. Increasing the kVp by 15% increases the exposure to the IR, unless the mAs is decreased. Also, decreasing the kVp by 15% decreases the exposure to the IR, unless the mAs is increased.

Detailed explanation-2: -Increasing the kVp increases the penetrating power of the radiation and increases the exposure to the image receptor. For film-screen IRs, kVp has a direct relationship with density; however, the effect of the kVp on density is not equal throughout the range of kVp (low, middle, and high).

Detailed explanation-3: -Kilovoltage peak (kVp) is the peak potential applied to the x-ray tube, which accelerates electrons from the cathode to the anode in radiography or computed tomography. Tube voltage, in turn, determines the quantity and quality of the photons generated.