An AP oblique rib projection obtained with the patient rotated less than 45 degrees demonstrates the
1)posterior ribs with decreased foreshortening.
2)axillary ribs, which are foreshortened.
3)anterior ribs adjacent to the lateral edge of the IR.
4)sternal body next to the vertebral column.
A) 1 and 2 only
B) 2 and 4 only
C) 3 and 4 only
D) 1, 2, and 4 only

Question

Quizplus · Accepted Answer

In an AP oblique rib projection with the patient rotated less than 45 degrees, the posterior ribs will have decreased foreshortening because they are more parallel to the X-ray beam. The axillary ribs, being further from the beam's central path, will appear foreshortened. Additionally, the sternal body will appear closer to the vertebral column due to the oblique angle of the projection.

An AP Oblique Rib Projection Obtained with the Patient Rotated