Which measurement is not used for evaluating lateral projections of the paranasal sinuses?

The measurement pertaining to the entire skull in view is not typically used for evaluating lateral projections of the paranasal sinuses. When assessing lateral sinus projections, the primary focus is on the paranasal sinuses themselves and their relationships within the cranial structure.

In practice, important criteria include evidence of proper collimation, as it ensures that the radiographic exposure is confined to the area of interest without excess radiation exposure to surrounding tissues. The height of the chin is also a critical factor, as it helps achieve the correct positioning for optimal visualization of the sinuses. Superimposed orbital roofs serve as a means to confirm that the patient is positioned correctly and that the projections are accurate.

However, having the entire skull in view is not necessary for this specific evaluation. The goal is to highlight the sinuses rather than the entirety of the cranial structure. This makes it clear that focusing on the full skull does not contribute to the assessment of the paranasal sinuses in lateral projections.