When collimating down from a 14"x17" field size to a 8"x10" field size,:
A)mAs must be increased to maintain radiographic image density.
B)kVp must be increased to maintain image quality.
C)off-focus radiation production is increased.
D)the mAs should be reduced by 50%.

Question

Quizplus · Accepted Answer

Reducing the field size from 14"x17" to 8"x10" decreases the amount of tissue irradiated, which can lead to a decrease in scatter radiation reaching the image receptor. To maintain the radiographic image density, the mAs may need to be increased because less scatter radiation contributes to the overall exposure of the image receptor.

When Collimating Down from a 14"x17" Field Size to a 8"x10