In which projection is the petrous ridges seen projected into the lower third of the orbits?

The Modified Waters projection is specifically designed to demonstrate the facial structures while providing optimal positioning of the petrous ridges. In this projection, the patient's orbitomeatal line (OML) is positioned at an angle, allowing the petrous ridges of the temporal bones to be seen projected into the lower third of the orbits. This positioning is crucial for visualizing the maxillary sinuses and evaluating the anatomy of the facial skeleton while minimizing the obstruction caused by the petrous ridges.

The correct alignment in the Modified Waters projection improves the visualization of key anatomical features, which is particularly important in diagnostic imaging of the sinuses and facial structures. By effectively positioning the skull, this technique maximizes the diagnostic value of the images taken, allowing for clearer analysis of potential pathologies in these areas.