Exam 11: Scatter Control

A significant amount of collimation will have what effect on the amount of radiation reaching the IR

The higher the grid ratio,the _____________ the scatter clean up and the _____________________ the radiographic contrast.

If a shoulder examination is done using an 8:1 ratio grid and 12 mAs,how much mAs should be used if the examination must be done tabletop (no grid)?

Scatter radiation is of no value in radiographic imaging.

Adding a grid or increasing grid ratio results in an increase in patient dose.

If 24 mAs and a 6:1 grid results in an excellent radiograph,how much mAs is needed with a 5:1 grid?

The probability of a Compton interaction occurring is related to

To overcome the decrease in sharpness caused by the air gap technique,an increase in SID is required.

Increasing collimation (decreasing the field size)results in

It is safe to assume that the x-ray beam field size and the light field size are exactly the same.

Which of the following grids provides excellent scatter clean-up but requires close to perfect alignment to avoid cutoff?

For radiographic procedures,scatter radiation is primarily the result of

As compared with lower kVp exposures,when using high kVp will result in a scattered photon that is of ________ energy.

Focused grids are more effective than parallel grids in absorbing scatter radiation and allowing transmitted radiation to reach the IR.

For a lateral lumbar spine,placing a lead shield on the table behind the area of exposure

A short-dimension grid

The Moiré effect can be caused by

The reason the grid in the bucky reciprocates is to

When the x-ray beam is not lined up with the center of the grid you have _________ cutoff.

To determine the amount of mAs to be increased when making grid changes,it is necessary to use the GCF,also known as the