P
Lateral Nasal bones use the same technique/exposure as_______?
Fingers
What Sinus group is demonstrated in the Parietoacanthial (waters) Horizontal-beam Projection of the paranasal sinuses, with an Open-mouth modification?
the sphenoid sinus
If the base of the skull is shown superimposed on the odontoid process in the AP Open Mouth Projection, what should the technologist do?
Have the patient flex head and neck
what is the CR location for a Lateral C-spine Projection?
CR perpendicular to C4
what is the CR location for an AP Axial Oblique Projection of the C-spine?
15-20 degrees cephalad to C4
Paranasal Sinuses should be done upright whenever possible to demonstrate _____?
Air/fluid levels
What is the CR location for an AP Axial C-spine projection?
CR angled 15-20 degrees cephalad to C4
If the teeth are shown superimposed on the odontoid process in the AP Open Mouth Projection, what should the technologist do?
What is BEST DEMONSTRATED on a Lateral C-spine Projection?
1. vertebral bodies
2. intervertebral joints
3. articular facets
4. zygapophyseal joints of C2-C3 to C7-T1
In the PA Axial Oblique Projection of the C-spine, which type of oblique position is the patient in?
Anterior Oblique position
A Lateral Horizontal-Beam Projection of the Paranasal Sinuses, will demonstrate _______?
All four sinus groups ( Maxillary, ethmoidal, frontal, sphenoidal)
Why do we angle the tube 15-20 degrees cephalad for the AP Axial C-spine Projection?
to open to intervertebral disc/joint spaces.
What is the SID for a Lateral C-spine Projection?
72 inches (180 cm)
A patient presents in the ED with an apparent C-spine injury. They are wearing a cervical collar, what type of projection should the radiographer perform?
Cross-table (horizontal beam) lateral C-spine projection
In the AP Axial projection of the C-spine, what oblique position is the patient in?
Posterior oblique position
the PA Axial (caldwell) projection of the paranasal sinuses, demonstrates ________?
frontal sinuses, and anterior ethmoidal sinuses
The AP Axial C-spine projection demonstrates an ____________?
anterior view of the intervertebral disk space, and vertebral bodies.
why do we use a 72 inch (180 cm) SID for a Lateral C-spine projection?
to minimize image magnification due to the shoulder.
For the AP Axial Oblique and PA Axial Oblique Projections of the C-spine, the patient is rotated ______ degrees?
45 degrees
Anterior Obliques positions (RAO/LAO) of the C-spine, demonstrate foramina __________ to the IR?
Closest to the IR (face down, angle down, side down)
The Parietoacanthial (waters) Horizontal-Beam Projection of the Paranasal sinuses, demonstrates _________?
primarily the maxillary sinus free from superimposition.
What is the Baseline for the AP Open Mouth Projection?
Line extending from the occlusal plan to the mastoid tip, is perpendicular to the IR.
Why do we have the patient depress the shoulder as much as possible during a Lateral C-spine projection?
to demonstrate the lower cervical region
What is the CR location for the PA Axial Oblique C-spine Projection?
15-20 degrees caudad to C4
Posterior Oblique Positons (RPO/LPO) of the C-spine, demonstrates the foramina ______ form the IR?
farthest from the IR. (face up, angle up, side up)