A Parietocanthial Facial Bone Projection (Waters Method) Demonstrating the Petrous

question 38

Multiple Choice

A parietocanthial facial bone projection (Waters method) demonstrating the petrous ridges within the maxillary sinuses

• A) would have been obtained with the patient's chin elevated more than needed to align the acanthioparietal line perpendicular to the IR.
• B) would have been obtained with the patient's chin insufficiently elevated to align the MML perpendicular to the IR.
• C) will require a cephalic central ray angulation if the patient is unable to adjust the chin.
• D) would have resulted if the projection was obtained with the patient's mouth open.

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