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?

All factors remaining constant, which of the following set of exposure conditions would yield an image with the GREATEST radiographic IR exposure?

During an x-ray procedure, a technologist receives a dose of 5 micro-Sieverts at a distance of 10 feet from the x-ray source. At a distance of 15 feet, the technologists dose would have been:

Which one of these factors determines the quality of the beam?

Which one of these tells the radiographer what new mAs to use when the SID changes to maintain IR exposure?

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

A radiograph is made with a 36-inch source-to-image distance (SID) resulting in a receptor exposure of 0.01 milligray (mGy). What will the receptor exposure be if the SID is changed to 72 inches?

A radiograph is acquired using 120 kilovoltage peak (kVp), a 16:1 grid, 72 inch source-to-image distance (SID), 500 milliamperes (mA), and using automated exposure control (AEC). How could these settings be changed to increase the radiographic contrast?

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

Which of these is the optimum kVp for an exposure of an abdomen with barium?