An Acanthioparietal Facial Bone Projection (Waters Method) with Poor Positioning

question 19

Multiple Choice

An acanthioparietal facial bone projection (Waters method) with poor positioning demonstrates the petrous ridges too far inferior to the maxillary sinuses. How could the positioning setup be adjusted for an optimal projection to be obtained?
1) Depress the patient's chin.
2) Align the central ray parallel with the MML.
3) Align the MML perpendicular to the IR.
4) Adjust the central ray angulation caudally.

• A) 1 and 3 only
• B) 2 and 3 only
• C) 1 and 4 only
• D) 1, 2, 3, and 4

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Outgroup

“Them”—those perceived as different or apart from our ingroup.

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Not being the same as another or each other; distinct in nature, form, or quality.

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Explicit and overt actions or policies that unjustly distinguish and differentiate individuals or groups based on certain traits or characteristics.