A mobile AP chest projection obtained with the central ray angled caudally demonstrates
1)vertically contoured ribs.
2)the manubrium projected superior to the fourth thoracic vertebra.
3)less than 1 inch (2.5 cm) of the apices above the clavicles.
4)vertical clavicles.
A) 1 and 3 only
B) 2 and 3 only
C) 2 and 4 only
D) 1 and 4 only

Question

Quizplus · Accepted Answer

Angling the central ray caudally for a mobile AP chest projection results in vertically contoured ribs and vertical clavicles. This is because the angle of the X-ray beam aligns more closely with the natural orientation of these structures when the patient is in a supine position.

A Mobile AP Chest Projection Obtained with the Central Ray