The centering mark should be within ____ of the light field central ray.
A)0%
B)1%
C)11%
D)100%

Question

Quizplus · Accepted Answer

The centering mark should be within 1% of the light field central ray. This ensures accurate positioning and reduces the risk of unnecessary radiation exposure to surrounding tissues. Option A (0%) and option D (100%) are not correct because they imply that the centering mark can be entirely absent or placed anywhere, which is not safe or accurate. Option C (11%) is not correct because it exceeds the permitted tolerance range for centering accuracy.

The Centering Mark Should Be Within ____ of the Light