Along with the use of erect positions,what other technical factor is important to demonstrate air/fluid levels in paranasal sinuses?

Question

Quizplus · Accepted Answer

The horizontal x-ray beam is important to demonstrate air/fluid levels in paranasal sinuses. This is because the horizontal beam allows for the air-fluid levels to separate and become visible on the image. The other options (A, C, and D) do not directly impact the visualization of air/fluid levels in the sinuses.

Along with the Use of Erect Positions,what Other Technical Factor