Cranium Positioning
For the PA Axial Projection (Caldwell), what plane must be perpendicular to the IR?
Hint: I am not looking for MSP, MCP, etc.
OML perpendicular
On the PA Projection of the skull, where should the petrous ridges be?
Filling the orbits.
What is the obliquity for AP Oblique SI joints, and which is the side of interest?
25-30 degrees and side elevated.
AP thoracic centering?
Midway between the jugular notch and xiphoid process.
Who was Brian's Clinical Instructor?
Barb.
What does SMV stand for?
Submentovertical.
All of them: frontal, ethmoidal, sphenoid, maxillary.
What projection should be done in a cervical routine if C7 is not visible on the lateral projection?
Cervico-thoracic Lateral Projection (Swimmer's)
This position profiles the median sacral crest and superimposes the greater sciatic notches?
Lateral Projection of Sacrum and Coccyx.
Where should the petrous ridges lie for the Parietalacanthial Projection (Waters method)?
Below the maxillary sinuses.
For facial bones, which projection better demonstrates injuries such as blow-out fractures?
Modified Parietoacanthial Projection. This places the orbital floors perpendicular to the IR and parallel to the CR.
Why is a low MA, high exposure time the most optimal for the Lateral Projection of the Thoracic Spine?
Blurr the lung markings and ribs.
Centering point for AP Axial Sacrum?
2 inches above the pubic symphysis.
Where did Kasia complete her clinical at?
Alexian Brothers
If the patient cannot lay supine for AP Axial (Towne) Projection, what projection can be done to obtain the same image and better view the occipital bone?
PA Axial Projetion (Haas Method)
Which Sinuses are easily seen on the PA Axial (Caldwell) Projection?
Frontal & Ethmoidal.
What two points must be aligned for the AP Odontoid (Fuchs)?
The chin and the mastoid must be perpendicular.
In what cervical projection may the CR be angled 5 degrees to better see the anatomy of interest?
Lateral Swimmer's
For the Submentovertical Projection of the skull, if the patient is unable to hyperextend their neck to place the IOML parallel to the IR. What must you do with the central ray?
(Not looking for a particular degree, just in general)
Angle the central ray until it is perpendicular with the IOML.
For the Axiolateral/Axiolateral Oblique Projection of the Mandible, what structure is in profile when the head is rotated 45 degrees towards the IR? What about 30 degrees? Finally, what about when the head is in true lateral?
On the Lateral Projection of the Lumbar Spine, you notice that when the image is processed the L5-S1 junction appears closed. You proceed to do a Lateral Projection of L5-S1, what angulation would you use?
(Not looking for a specific degree, just in general.)
Perpendicular. Joint space was closed because of the divergence of the beam.
For the AP axial projection of the SI Joints, what is the centering point and angulation?
1.5 inches superior to symphysis or 2 to 2.5 inches below the ASIS.
the angle is 30 degrees cephalad for males and 35 for females.
Where was Barb a CI at?
NCH