Shape distortion always results in a loss of image quality and should therefore be avoided.

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

Which one of these types of filters is sometimes shaped like a wedge?

If a radiograph is produced using a milliampere (mA) of 400 and 0.05 seconds, how should the exposure time be changed if the mA is decreased to 200?

Calculate the new  mA  required to maintain the same IR exposure produced with the original values.

Which of the following sets of factors would be associated with a radiographic image possessing the greatest amount of focal spot blur?

Which of the choices below does NOT increase contrast?

Which one of these grid ratios will absorb the most scattered radiation?

A decubitus radiograph is acquired using 72 kilovoltage peak (kVp), a 12:1 grid, 72 inch source-to-image distance (SID), 600 milliamperes (mA), and using automated exposure control (AEC). Which of these variable modifications will decrease the exposure time?

Grid ratio is represented by the formula: