A parietocanthial facial bone projection (Waters method) ...

[asmith134]

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 obtain 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.

Question 2

An optimally positioned lateral cranium projection demonstrates all the following except
 
  a. an area 2 inches (5 cm) superior to the EAM at the center of the exposure field.
  b. superimposition of the greater wings of the sphenoid and orbital roofs.
  c. the sella turcica on end.
  d. posteroinferior occipital bones and posterior arch of the atlas free of superimposi-tion.

[Ptupou85]

Answer to Question 1

B

Answer to Question 2

C

[asmith134]

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[Ptupou85]

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