Indicate whether contrast will increase, decrease, or remain the same if all factors stay the same with the exception of changing from a 14 x 17 inch field size to a 10 x 12 inch field:

A radiograph is made using 85 kVp at 5 mAs without a grid.  If another exposure is made with an 8:1 grid, what is the new mAs required to maintain radiographic density?

List the following body tissues in order of increasing attenuation: Muscle Bone Fat Lung

Choose the following statements that accurately describe the components in a light-localizing variable-aperture collimator: The upper set of shutters are designed to reduce penumbra. The lower set of shutters are located 3 to 7 inches below the x-ray tube. The lower set of shutters are designed to reduce off-focus radiation.

The use of grids will result in:

As x-ray energy ____, radiographic contrast ____.

Compared to a low ratio grid, a high ratio grid will: Require lower technical factors Absorb more scattered radiation Allow more centering latitude

In a variable aperture collimator, which of the following structures are located immediately beneath the x-ray tube window?

If an increase in kilovoltage is accompanied by a reduction in mAs in order to maintain radiographic density, the overall result will be ____. a decrease in radiographic contrast a decrease in the amount of scatter produced an increase in radiographic contrast an increase in the amount of scatter produced

Which of the following terms describes the differential absorption of the x-ray beam due the different transmission and attenuation effects of the human body?