Heart penetration on an AP chest projection
1. is obtained by increasing the kVp.
2. results in a lower contrast image.
3. is required when apparatuses located at the mediastinal region are of interest.
4. results in a decrease in scatter radiation reaching the IR.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 only
d. 1, 2, 3, and 4
Question 2
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