What can the radiologic technologist do to help the patient maintain a true lateral position of the skull while recumbent?

What should occur when a parietoacanthial projection (Waters method) is performed for facial bones?

1.
Midsagittal plane is parallel to the IR, the head rests on the chin, and the orbitomeatal line forms a 37-degree angle to the IR.

2.
Midsagittal plane is perpendicular to the IR, the head rests on the chin, and the orbitomeatal line forms a 37-degree angle to the IR.

3.
Midsagittal plane is perpendicular to the IR, the head rests on the chin, and the orbitomeatal line forms a 53-degree angle to the IR.

4.
Midsagittal plane is perpendicular to the IR, the head rests on the nose, and the orbitomeatal line forms a 37-degree angle to the IR.

What are guidelines to alleviate strain and facilitate accurate positioning for radiography of the skull?

Why should a horizontal beam be directed perpendicular to the image receptor when positioning a patient for a lateral trauma skull?

What cranial positioning line should be perpendicular to the image receptor when positioning the patient for a lateral view of the facial bones?

How is rotation evident on a lateral projection of the skull?