The central ray is directed perpendicular to which reference line for the SMV projection of the sinuses?

Question

Quizplus · Accepted Answer

The central ray for the SMV projection of the sinuses is directed perpendicular to the IOMP (infraorbitomeatal line) reference line, which extends horizontally from the infraorbital margin to the ear canal. This line is used to position the head for the projection, ensuring that the sinuses are visualized without superimposition from the skull or mandible. The OML (orbitomeatal line), AML (acanthiomeatal line), and MML (mentomeatal line) are all reference lines used in other projections but are not relevant to the SMV projection of the sinuses.

The Central Ray Is Directed Perpendicular to Which Reference Line