The most easily adjusted radiographic beam-restricting device is the:

If the image is 10 inches long, the object is 9 inches long and the SID is 70 inches, what is the SOD?

During the exposure, the grid in the bucky:

Which of the following formulas is used to determine the magnification factor?

Which of the following radiographic images of the skull is likely to have the greatest amount of shape distortion?

If an optimal radiograph is acquired at 72 inches with an air kerma of 4 mGy, what will the air kerma be if the distance is reduced to 40 inches?

An x-ray exposure at 50 inches results in a beam intensity of 200 µGy. Estimate the new intensity for a distance of 40 inches.

If the same exposure factors are used on four different radiographs and all that is changed is the SID, which radiograph would have the greatest IR exposure? The one taken at a:

If the OID is 8 inches and the SID is 72 inches, what is the magnification factor?

If the image is 6 inches wide and the object is 4.5 inches wide, what is the percent magnification?