A less than optimal AP oblique lumbar vertebrae projection does not demonstrate the vertebra's superior and inferior articular processes in profile and the corresponding zygapophyseal joint spaces are closed.
a. To obtain an optimal projection, move the central ray superiorly.
b. The laminae will also be obscured on this projection.
c. If the pedicles are also demonstrated at the midpoint of the vertebral bodies on this projection, the patient was rotated less than 45-degrees.
d. If the pedicles are also demonstrated adjacent to the vertebra's lateral vertebral body borders on this projection, the patient would need to rotate more to obtain an optimal projection.
Question 2
An AP axial coccygeal projection demonstrates the symphysis pubis superimposed over the sec-ond and third coccygeal vertebrae. How was the positioning setup mispositioned for such a pro-jection to be obtained?
a. The patient was rotated.
b. The central ray was angled too caudally.
c. The central ray was angled too cephalically.
d. The patient's legs were extended.
X-ray showing oblique fracture of the humerus.
Lumbar vertebra.
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