A lateral sacral projection with poor positioning demonstrates a closed L5-S1 intervertebral disk space and foreshortening of the sacrum. How could the positioning setup have been misposi-tioned for such a projection to be obtained?
1. The patient was rotated.
2. The central ray was angled too cephalically.
3. The vertebral column was not aligned parallel with the imaging table.
4. The patient's legs were extended.
a. 1 only
b. 2 and 3 only
c. 3 only
d. 1 and 4 only
Question 2
An AP axial coccygeal projection with accurate positioning demonstrates the
1. coccyx aligned with the symphysis pubis.
2. longitudinal axis of the coccyx aligned with the longitudinal axis of the IR.
3. first through third coccygeal vertebrae.
4. coccyx without foreshortening.
a. 1 and 3 only
b. 2 and 3 only
c. 1, 2, and 4 only
d. 1, 2, 3, and 4
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