Increasing the SID to 48 inches (123 cm) from 40 inches (102 cm) and adjusting the mAs accordingly will:

Question

Quizplus · Accepted Answer

Increasing the SID and adjusting mAs accordingly with the use of a small focal spot will decrease penumbra, which refers to the blurriness or fuzzy edges of the image. The increase in SID will result in less divergence of the x-ray beam, and the use of a small focal spot will create a sharper image. This will not affect patient skin dose or internal dose significantly.

Increasing the SID to 48 Inches (123 Cm) from 40