What is true when imaging the skull with the orbitomeatal line perpendicular and CR directed 25 degrees cephalad?

When the orbitomeatal line is positioned perpendicular to the film and the central ray (CR) is directed 25 degrees cephalad, this positioning is typically used to demonstrate the occipital bone clearly. This technique is commonly known as the occipitomental projection, which is particularly effective for visualizing the occipital region of the skull.

The angle of the CR allows for an optimal view of the occipital bone without significant distortion, and it helps to minimize superimposition of other anatomical structures. As a result, the occipital bone is well visualized in this projection. Understanding the significance of this technique is crucial for obtaining precise imaging of skull structures, and it highlights the importance of correct positioning and angulation in radiography.