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RE CH19

Radiography Essentials CH19

QuestionAnswer
Positioning landmark at the junction of the nose and upper lip? acanthion
What is EAM? External auditory meatus
Air-filled cavities in the face are called what? Paranasal sinuses
Line extending from the outer corner of the eye to the EAM orbitomeatal line
CR directed for PA axial projection? (Caldwell) 15 degrees caudal
Why are sinuses done upright? To demonstrate air/fluid levels
What projection best demonstrates the maxillary sinuses? Waters /Parietoacanthial
A lateral projection of the face, using detail/extremity screen, is used to image which bones? nasal bones
For the PA skull the petrous ridges should be: filling the whole orbit
The bony prominence on the frontal bone between the eyebrows is caled the? glabella
Patient is prone, oblique position with the MSP of the head parallel to the IR and the IPL perpendicular to the IR. The CR if perpendicular to enter 2 inches uperior to the EAM. Lateral
Which structure houses the pituitary gland? sella turcica
Patient is positioned supine with the MSP and OML perpendicular to the IR. The CR is angled 30degrees caudal and enters MSP at approximately 2.5" superior to the glabella. AP axial (Townes)
What is contained within the petrous pyramids? middle and inner ear structures
Where should the petrous pyramids be located on a Caldwell PA axial projections? Lower third of the orbits
What structure of the skull is visualized on the Towne's view (AP axial)? Foramen Magnum
Created by: cangeli2
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