A radiograph of the hand is underexposed and nondiagnostic.The following analog (film-screen) exposure factors were used: 50 kV, 2 mAs, 40-inch (102 cm) SID.Which of the following sets of exposure factors should be used during the repeat exposure?

Question

Quizplus · Accepted Answer

The radiograph is underexposed, so we need to increase the exposure. The kV and SID can stay the same because they will not affect the exposure as much as the mAs. Increasing the mAs will increase the exposure, making the image less underexposed. Therefore, the best choice is D, which doubles the original mAs value to 4 mAs. Option A increases mAs too much, and option B decreases it too much. Option C also changes the kV, which is unnecessary in this situation.

A Radiograph of the Hand Is Underexposed and Nondiagnostic