X-Ray Tube Kilovoltage Peak (kVp)

An increase in kVp extends and intensifies the x-ray emission spectrum, resulting in a decrease in maximal and average/effective energies and a decrease in photon intensity.

The energy of the photon emitted from the X-ray tube is independent of the energy of the electrons that bombard the target.

As the applied voltage increases, the effective photon energy decreases.

The maximum photon energy is not proportional to the peak value of the applied voltage.

The intensity of X-ray production decreases with an increase in applied voltage.

True or false: The grid ratio is defined as the ratio of the width of the lead strips to the height of the interspace between the lead strips.

True or false: Most grids have ratios ranging from 1:5 to 1:16.

True or false: Grids with higher ratios eliminate more scattered radiation, resulting in decreased patient exposure and x-ray tube loading.

True or false: The ability of the grid to discriminate against scattered radiation is largely determined by the width of the lead strips.

True or false: The dimensions of the lead strips and the interspaces determine the penetration characteristics for scattered radiation.