A lateral thoracic projection with poor positioning demonstrates closed eighth through twelfth intervertebral disk spaces. How was the patient mispositioned for such a projection to be ob-tained?
1. The central ray was not aligned perpendicular to the thoracic vertebrae.
2. The vertebral column was not aligned parallel with the imaging table.
3. A radiolucent sponge was not accurately positioned between the lateral surface of the patient and the imaging table.
4. The hips and knees were extended.
a. 1 and 2 only
b. 2 and 3 only
c. 1, 2, and 3 only
d. 4 only
Question 2
A less than optimal AP axial cervical vertebrae projection demonstrating closed intervertebral disk spaces and each vertebra's spinous process within its vertebral body
a. was obtained with the central ray angled too cephalically.
b. was obtained with the central ray angled too caudally.
c. was obtained because the patient was kyphotic and the central ray angle was not decreased over the routinely used angulation.
d. will also demonstrate elongated uncinate processes.
Imaginary Thoracic Lines, Posterior View
Lateral rectus
thoracic 16
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